Publications

Preprints

Raman scattering signatures of spinons and triplons in frustrated antiferromagnets O. R. Bellwood, H. L. Nourse, and B. J. Powell arXiv:2401.10452 pdf
Theory of the Relaxation of Trapped Spin-States in Spin Crossover Materials: Drosophila for Complex Dynamics M. Nadeem and B. J. Powell ChemRxiv doi:10.26434/chemrxiv-2023-xrj86 pdf
Robust, gapped, flat bands at half-filling in the minimal model of the superconducting metal-organic framework, Cu-BHT M. F. Ohlrich, H. L. Nourse, and B. J. Powell arXiv:2209.10673 pdf
Equivalence of elastic and Ising models for spin crossover materials G. Ruzzi, J. Cruddas, R. H. McKenzie, and B. J. Powell arXiv:2008.08738 pdf

2024

Gate control of Mott metal-insulator transition in a 2D metal-organic framework B. Lowe, B. Field, J. Hellerstedt, J. Ceddia, H. L. Nourse, B. J. Powell, N. V. Medhekar, and A. Schiffrin Nat. Comms. (in press; preprint arXiv:2305.14983 ) pdf
Multistep transitions in spin crossover materials without long-range spin state order from dimensional reduction G. Ruzzi, J. Cruddas, and B. J. Powell Mater. Adv. 5, 2057-2068 (2024) pdf (open access)

2023

Gapless spinons and a field-induced soliton gap in the hyper-honeycomb Cu oxalate framework compound [(C₂H₅)₃NH]₂Cu₂(C₂O₄)₃

C. Dissanayake, A. C. Jacko, K. Kumarasinghe, R. Munir, H. Siddiquee, W. J. Newsome, F. J. Uribe-Romo, E. S. Choi, S. Yadav, X.-Z. Hu, Y. Takano, S. Pakhira, D. C. Johnston, Q.-P. Ding, Y. Furukawa, B. J. Powell, Y. Nakajima

Phys. Rev. B 108, 134418 (2023)

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2022

Topological superconductivity from doping a triplet quantum spin liquid in a flat band system M. Fernández López, B. J. Powell, and J. Merino Phys. Rev. B 106, 235129 (2022) pdf
Guest-Induced Multistep to Single-Step Spin-Crossover Switching in a 2-D Hofmann-Like Framework with an Amide-Appended Ligand M. Ahmed, K. S. A. Arachchige, Z. Xie, J. R. Price, J. Cruddas, J. K. Clegg, B. J. Powell, C. J. Kepert, S. M. Neville Inorg. Chem. 61, 11667–11674 (2022) pdf
Multi-Redox Responsive Behavior in a Mixed-Valence Semiconducting Framework based on bis-[1,2,5]-thiadiazolo-tetracyanoquinodimethane R. Murase, T. D. Hudson, T. Aldershof, K. Nguyen, J. G. Gluschke, E. P. Kenny, X. Zhou, T. Wang, M. van Koeverden, B. J. Powell, A. P. Micolich, B. F. Abrahams and D. M. D’Alessandro J. Am. Chem. Soc., 144, 13242–13253 (2022) pdf
Co-existence of five- and six-coordinate iron(ii) species captured in a geometrically strained spin-crossover Hofmann framework L. Xu, Z. Xie, K. Zenere, J. K. Clegg, E. P. Kenny, N. J. Rijs, G. N. L. Jameson, C. J. Kepert, B. J. Powell, and S. M. Neville Dalton Trans., 2022, 9596-9600 (2022) pdf
Toward High Temperature Light-Induced Spin State Trapping in Spin Crossover materials: the Interplay of Collective and Molecular Effects M. Nadeem, J. Cruddas, G. Ruzzi, and B. J. Powell J. Am. Chem. Soc., 144, 9138–9148 (2022) pdf
C₃ symmetry breaking metal-insulator transitions in a flat band in the half-filled Hubbard model on the decorated honeycomb lattice H. L. Nourse, R. H. McKenzie, and B. J. Powell Phys. Rev. B 105, 205119 (2022) pdf
Regulation of Multistep Spin Crossover Across Multiple Stimuli in a 2-D Framework Material M. Ahmed, K. A. Zenere, N. F. Sciortino, K. S. A. Arachchige, G. F. Turner, J. Cruddas, C. Hua, J. R. Price, J. K. Clegg, F. J. Valverde-Muñoz, J. A. Real, G. Chastanet, S. A. Moggach, C. J. Kepert, B. J. Powell, and S. M. Neville Inorg. Chem. 61, 17, 6641–6649 (2022) pdf

2021

x-[Pd(dmit)₂]₂ as a quasi-1D, scalene Heisenberg model E. P. Kenny, A. C. Jacko, and B. J. Powell Phys. Rev. Materials 5, 084412 (2021) pdf
Spin-0 Mott insulator to metal to spin-1 Mott insulator transition in the single-orbital Hubbard model on the decorated honeycomb lattice H. L. Nourse, R. H. McKenzie, and B. J. Powell Phys. Rev. B 104, 075104 (2021). pdf
Multiple Coulomb phases with temperature tunable ice rules in pyrochlore spin crossover materials J. Cruddas and B. J. Powell Phys. Rev. B 104, 024433 (2021). pdf
Tight-Binding Approach to Pyrazine-Mediated Superexchange in Copper–Pyrazine Antiferromagnets E. P. Kenny, A. C. Jacko, and B. J. Powell Inorg. Chem. 60, 11907–11914 (2021). pdf
Spin-state smectics in spin crossover materials J. Cruddas, G. Ruzzi, and B. J. Powell J. Appl. Phys. 129, 185102 (2021) Invited contribution to special issue on "Spin Transition Materials: Molecular and Solid-State" pdf
Unconventional superconductivity near a flat band in organic and organometallic materials J. Merino, M. Fernandez Lopez, and B. J. Powell Phys. Rev. B, 103, 094517 (2021) pdf
Spin-Crossover 2-D Hofmann Frameworks Incorporating an Amide-Functionalized Ligand: N-(Pyridin-4-Yl)Benzamide X. Ong, M. Ahmed, L. Xu, A. T. Brennan, C. Hua, K. A. Zenere, Z. Xie, C. J. Kepert, B. J. Powell and S. M. Neville Chemistry 3, 360-372 (2021). pdf 《自旋交叉尚协同》主宾相处贵通融，分子亦学迎客松；营筑好巢能引凤，自旋翻转尚协同。 (poem written by Prof. Huan Pang, Editor in Chief)
Fate of the Hebel-Slichter peak in superconductors with strong antiferromagnetic fluctuations D. C. Cavanagh and B. J. Powell Phys. Rev. Research 3, 013241 (2021). pdf
Quasi-one dimensional magnetic interactions in the three-dimensional hyper-honeycomb framework [(C₂H₅)₃NH]₂Cu₂(C₂O₄)₃ A. C. Jacko and B. J. Powell Phys. Chem. Chem. Phys. 23, 5012-5019 (2021). pdf
Hierarchical Spin‐Crossover Cooperativity in Hybrid 1‐D Chains of Fe^II‐1,2,4‐trizole Trimers Linked by [Au(CN)₂]‐ Bridges L. Ezzedinloo, K. A. Zenere, Z. Xie, M. Ahmed, S. Scottwell, M. Bhadbhade, H. E. A. Brand, J. K. Clegg, C. Hua, N. F. Sciortino, L. C. Parker, B. J. Powell, C. J. Kepert and S. M. Neville Chem. Eur. J. 27, 5136-5141 (2021). pdf
Multiple insulating phases due to the interplay of strong correlations and lattice geometry in a single-orbital Hubbard model H. L. Nourse, R. H. McKenzie, and B. J. Powell Phys. Rev. B (Lett.) 103, L081114 (2021). pdf
Dual-supramolecular contacts induce extreme Hofmann framework distortion and multi-stepped spin-crossover M. Ahmed, H. E. A. Brand, V. K. Peterson, J. K. Clegg, C. J. Kepert, J. R. Price, B J. Powell, and S. M. Neville Dalton Trans. 50, 1434-1442 (2021). pdf

2020

Quantitative calculations for the non-radiative rate of phosphorescent iridium(III) complexes X. Zhou and B. J. Powell Phys. Chem. Chem. Phys. 22, 27348-27356 (2020). Invited contribution to featured collection on Quantum Theory: The challenge of Transition Metal Complexes pdf
Structure-property relationships and the mechanisms of multistep transitions in spin crossover materials and frameworks J. Cruddas and B. J. Powell Inorg. Chem. Front. 7, 4424-4437 (2020). pdf
Emergent particles and gauge fields in quantum matter B. J. Powell Contemp. Phys. 61, 96-131 (2020). pdf
Fast, Accurate Enthalpy Differences in Spin Crossover Crystals from DFT+U M. Ohlrich and B. J. Powell J. Chem. Phys. 153, 104107 (2020) pdf
Frustration, ring exchange, and the absence of long-range order in EtMe₃Sb[Pd(dmit)₂]₂: from first principles to many-body theory E. P. Kenny, G. David, N. Ferré, A. C. Jacko, and B. J. Powell Phys. Rev. Materials 4, 044403 (2020) pdf
Interplay of dipoles and spins in κ-(BEDT-TTF)₂X, where X = Hg(SCN)₂Cl, Hg(SCN)₂Br, Cu[N(CN)₂]Cl, Cu[N(CN)₂]Br, and Ag₂(CN)₃ A. C. Jacko, E. P. Kenny, and B. J. Powell Phys. Rev. B 101, 125110 (2020) pdf

2019

Spin-state ice in elastically frustrated spin-crossover materials J. Cruddas and B. J. Powell J. Am. Chem. Soc. 141, 19790-19799 (2019). pdf
Mechanomagnetics in elastic crystals: insights from [Cu(acac)₂] E. P. Kenny, A. C. Jacko, and B. J. Powell Angew. Chem. Int. Ed., 58, 15082 (2019). pdf
Umklapp scattering in unconventional superconductors: Microwave conductivity shows that κ-(BEDT-TTF)₂Cu[N(CN)₂]Br is a dxy superconductor D. C. Cavanagh and B. J. Powell Phys. Rev. B 100, 054505 (2019). pdf

2018

Spin molecular-orbit coupling and magnetic properties of the decorated honeycomb layers of Mo₃S₇(dmit)₃ crystals J. Merino, A. C. Jacko, A. Khosla, A. Ralko, and B. J. Powell AIP Adv. 8, 101430 (2018). pdf
Non-radiative decay and stability of N-heterocyclic carbene iridium(III) complexes X. Zhou and B. J. Powell Inorg. Chem. 57, 8881 (2018). pdf
The expanding materials multiverse B. J. Powell Science 360, 1073-1074 (2018). pdf
Magnetic Excitations of the Cu²⁺ Quantum Spin Chain in Sr₃CuPtO₆ J. C. Leiner, J. Oh, A. I. Kolesnikov, M. B. Stone, M. D. Le, E. P. Kenny, B. J. Powell, M. Mourigal, E. E. Gordon, M.-H. Whangbo, J.-W. Kim, S.-W. Cheong, and J.-G. Park Phys. Rev. B 97, 104426 (2018). pdf
Nuclear Magnetic Resonance in Low-Symmetry Superconductors D. C. Cavanagh and B. J. Powell Phys. Rev. B, 97, 024509 (2018). pdf

2017

Balance in strongly correlated itinerant electron systems: An extension of Nagaoka's theorem B. J. Powell Phys. Rev. B 96, 174435 (2017). pdf
Effects of anisotropy in spin molecular-orbital coupling on effective spin models of trinuclear organometallic complexes J. Merino, A. C. Jacko, A. L. Khosla, and B. J. Powell Phys. Rev. B 96, 205118 (2017). pdf
Dynamical reduction of the dimensionality of exchange interactions and the "spin-liquid" phase of κ-(BEDT-TTF)₂X B. J. Powell, E. P. Kenny, and J. Merino Phys. Rev. Lett. 119, 087204 (2017); 120, 199901(E) (2018). article erratum
Effect of n-Propyl Substituents on the Emission Properties of Blue Phosphorescent Iridium(III) Complexes X. Zhou, P. L. Burn, and B. J. Powell J. Phys. Chem. 146, 174305 (2017). pdf
Spin-orbit coupling in Mo₃S₇(dmit)₃ A. C. Jacko, A. L. Khosla, J. Merino, and B. J. Powell Phys. Rev. B 95, 155120 (2017). pdf
Heisenberg and Dzyaloshinskii-Moriya interactions controlled by molecular packing in tri-nuclear organometallic clusters B. J. Powell, J. Merino, A. L. Khosla, and A. C. Jacko Phys. Rev. B 95, 094432 (2017); 96, 099902(E) (2017). article erratum
Spin-orbit coupling and strong electronic correlations in cyclic molecules A. L. Khosla, A. C. Jacko, J. Merino, and B. J. Powell Phys. Rev. B 95, 115109 (2017). Editor's Suggestion pdf
A thiocarbonyl-containing small molecule for optoelectronics D. Gendron, F. Maasoumi, A. Armin, K. Pattison, P. L. Burn, P. Meredith, E. Namdas, and B. J. Powell RSC Adv. 7, 10316 (2017). pdf
Elucidating the spatial arrangement of emitter molecules in organic light-emitting diode films C. Tonnelé, B. Caron, A. J. Clulow, A. K. Malde, M. Stroet, P. L. Burn, A. E. Mark, and B. J. Powell Angew. Chem. Int. Ed. 56, 8402 (2017). pdf

2016

Haldane insulator protected by reflection symmetry in the doped Hubbard model on the three-legged ladder H. L. Nourse, I. P. McCulloch, C. Janani, and B. J. Powell Phys. Rev. B 94, 214418 (2016). pdf
Quasi-one-dimensional spin-orbit-coupled correlated insulator in a multinuclear coordinated organometallic crystal J. Merino, A. C. Jacko, A. L. Khosla, and B. J. Powell Phys. Rev. B 94, 205109 (2016). pdf
Bond Fission and Non-Radiative Decay in Iridium(III) Complexes X. Zhou, P. L. Burn, and B. J. Powell Inorg. Chem. 55, 5266 (2016); 56, 7574 (2017). article correction
Exact exchange and the density functional theory of metal-to-ligand charge-transfer in fac-Ir(ppy)₃ A. R. G. Smith, P. L. Burn, and B. J. Powell Organ. Electron. 33, 110 (2016). pdf
Understanding Melanin: A Nano Based Material for the Future A. B. Mostert, P. Meredith, B. J. Powell, I. R. Gentle, G. R. Hanson, and F. L. Pratt In 'Nanomaterials: Science and Applications', edited by D. M. Kane, A. P. Micolich and P. Roger (Taylor & Francis, Boca Raton, 2016).

2015

Breakdown of the universality of the Kadowaki-Woods Ratio in multi-band metals D. C. Cavanagh, A. C. Jacko, and B. J. Powell Phys. Rev. B. 92, 195138 (2015). pdf
Interplay of zero-field splitting and excited state geometry relaxation in fac-Ir(ppy)₃ J. P. González-Vázquez, P. L. Burn, and B. J. Powell Inorg. Chem. 54, 10457 (2015). pdf
Phase Diagram of the Spin-1/2 Triangular J₁-J₂ Heisenberg Model on a 3-leg Cylinder S. N. Saadatmand, B. J. Powell, and I. P. McCulloch Phys. Rev. B 91, 245119 (2015). pdf
Conservation laws, radiative decay rates, and excited state localization in organometallic complexes with strong spin-orbit coupling B. J. Powell Sci. Rep. 5, 10815 (2015). pdf
Emergence of quasi-one-dimensional physics in Mo₃S₇(dmit)₃, a nearly-isotropic three-dimensional molecular crystal A. C. Jacko, C. Janani, K. Koepernik, and B. J. Powell Phys. Rev. B 91, 125140 (2015). pdf
Theories of phosphorescence in organo-transition metal complexes - from relativistic effects to simple models and design principles for organic light-emitting diodes B. J. Powell Coord. Chem. Rev. 295, 46 (2015). pdf

2014

Haldane Phase in the Hubbard Model at 2/3-Filling for the Organic Molecular Compound Mo₃S₇(dmit)₃ C. Janani, J. Merino, I. P. McCulloch, and B. J. Powell Phys. Rev. Lett. 113, 267204 (2014). pdf
Low-energy effective theories of the two-thirds filled Hubbard model on the triangular necklace lattice C. Janani, J. Merino, I. P. McCulloch, and B. J. Powell Phys. Rev. B 90, 035120 (2014). pdf
Spin liquid phase in a spatially anisotropic frustrated antiferromagnet: A Schwinger boson mean-field approach J. Merino, M. Holt, and B. J. Powell Phys. Rev. B 89, 245112 (2014). pdf
Spin liquid phase in the semiclassical theory of the Heisenberg model on an anisotropic triangular lattice with ring exchange M. Holt, B. J. Powell, and J. Merino Phys. Rev. B 89, 174415 (2014). pdf
Synthesis and properties of pyrrolo[3,2-b]pyrrole-1,4-diones (isoDPP) derivatives D. Gendron, E. Gann, K. Pattison, F. Maasoumi, C. R. McNeill, S. E. Watkins, P. L. Burn, B. J. Powell, and P. E. Shaw J. Mat. Chem. C 2, 4276 (2014). pdf

2013

In-plane superfluid density and microwave conductivity of the organic superconductor κ-(BEDT-TTF)2Cu[N(CN)2]Br: evidence for d-wave pairing and resilient quasiparticles S. Milbradt, A. A. Bardin, C. J. S. Truncik, W. A. Huttema, A. C. Jacko, P. L. Burn, S.-C. Lo, B. J. Powell, and D. M. Broun Phys. Rev. B. 88, 064501 (2013). pdf
Hydration-Controlled X-Band EPR Spectroscopy: A Tool for Unravelling the Complexities of the Solid-State Free Radical in Eumelanin A. B. Mostert, G. R. Hanson, T. Sarna, I. R. Gentle, B. J. Powell, and P. Meredith J. Phys. Chem. B 117, 4965 (2013). pdf
Three-dimensional Carbazole-based Dendrimers: Model Structures for Studying Charge Transport in Amorphous Films K. Mutkins, S. S. Y. Chen, A. Pivrikas, M. Aljada, P. L. Burn, P. Meredith, and B. J. Powell Polym. Chem. 4, 916 (2013). pdf

2012

Geometrical frustration in the spin liquid β'-Me3EtSb[Pd(dmit)₂]₂ and the valence bond solid Me3EtP[Pd(dmit)₂]₂ E. P. Scriven and B. J. Powell Phys. Rev. Lett. 109, 097206 (2012). pdf
Kinetics of Charge Transfer Processes in Organic Solar Cells: Implications for the Design of Acceptor Molecules E. P. Schwenn, K. Gui, Y. Zhang, P. L. Burn, P. Meredith, and B. J. Powell Org. Electron. 13, 2538 (2012). pdf
On the origin of electrical conductivity in the bio-electronic material melanin A. B. Mostert, B. J. Powell, F. L. Pratt, G. R. Hanson, T. Sarna, I. R. Gentle, and P. Meredith Proc. Nat. Acad. Sci. 109, 8943 (2012). pdf
Electron-phonon coupling as an order-one problem B. J. Powell, M. R. Pederson and T. Baruah Crystals 2, 236 (2012). pdf
On the origin of electrical conductivity in the bio-electronic material melanin A. B. Mostert, B. J. Powell, I. R. Gentle, and P. Meredith Appl. Phys. Lett. 100, 093701 (2012). pdf
Effects of Fluorination on Iridium(III) Complex Phosphorescence: Magnetic Circular Dichroism and Relativistic Time-Dependent Density Functional Theory A. R. G. Smith, M. J. Riley, P. L. Burn, I. R. Gentle, S.-C. Lo, and B. J. Powell Inorg. Chem. 51, 2821 (2012). pdf
Superconductivity suppression and peak resistivity enhancement for thin crystals of κ-(BEDT-TTF)₂Cu(SCN)₂ A. Bardin, P. L. Burn, S.-C. Lo, and B. J. Powell Phys. Stat. Sol. B 249, 979 (2012). pdf

2011

Spin-orbit coupling in phosphorescent Ir(III) complexes A. R. G. Smith, P. L. Burn, and B. J. Powell ChemPhysChem 12, 2429 (2011). pdf
Electronic correlations in organometallic complexes A. C. Jacko and B. J. Powell Chem. Phys. Lett. 508, 22 (2011). pdf
Quantum frustration in organic Mott insulators: from spin liquids to unconventional superconductors B. J. Powell and R. H. McKenzie Rep. Prog. Phys. 74, 056501 (2011). pdf
An introduction to effective low-energy Hamiltonians in condensed matter physics and chemistry B. J. Powell In Computational Methods for Large Systems: Electronic Structure Approaches for Biotechnology and Nanotechnology J. R. Reimers (Ed.) (Wiley, Hoboken, 2011). Preprint: arXiv:0906.1640 pdf
Relativistic Effects in a phosphorescent Ir(III) complex A. R. G. Smith, M. J. Riley, S.-C. Lo, P. L. Burn, I. R. Gentle, and B. J. Powell Phys. Rev. B 83, 041105(R) (2011). pdf
Calculation of solid state molecular ionisation energies and electron affinities for organic semiconductors E. P. Schwenn, P. L. Burn, and B. J. Powell Org. Ele. 12, 394 (2011). pdf
A tunable metal-organic resistance thermometer A. P. Stephenson, A. P. Micolich, K. Lee, P. Meredith, and B. J. Powell ChemPhysChem 12, 116 (2011). pdf

2010

Models of organometallic complexes for optoelectronic applications A. C. Jacko, Ross H. McKenzie, and B. J. Powell J. Mat. Chem. 20, 10301 (2010). pdf
Sensitivity of the photo-physical properties of organometallic complexes to small chemical changes A. C. Jacko, B. J. Powell, Ross H. McKenzie J. Chem. Phys. 133, 124314 (2010). pdf
Competition between Superconductivity and Weak Localization in Metal-Mixed Ion-Implanted Polymers A. P. Stephenson, A. P. Micolich, U. Divakar, P. Meredith, and B. J. Powell Phys. Rev. B 81, 144520 (2010). pdf
Towards molecular energy calculations on a quantum computer B. P. Lanyon, J. D. Whitfield, G. G. Gillet, M. E. Goggin, M. P. Almeida, I. Kassal, J. D. Biamonte, M. Mohseni, B. J. Powell, M. Barbieri, A. Aspuru-Guzik, and A. G. White Nature Chem. 2, 106 (2010). pdf
Gaseous Adsorption in Melanins: Hydrophilic Biomacromolecules with High Electrical Conductivities A. B. Mostert, K. J. P. Davy, J. L. Ruggles, B. J. Powell, I. R. Gentle, and P. Meredith Langmuir, 26, 412 (2010). pdf

2009

Effective Coulomb interactions within BEDT-TTF dimers E. Scriven and B. J. Powell Phys. Rev. B 80, 205107 (2009). pdf
Ionic Hubbard model on a triangular lattice for Na_0.5CoO₂, Rb_0.5CoO₂ and K_0.5CoO₂: Mean-field slave boson theory B. J. Powell, J. Merino, and R. H. McKenzie Phys. Rev. B 80, 085113 (2009). pdf
Spin Fluctuations and the Pseudogap in Organic Superconductors B. J. Powell, E. Yusuf, and R. H. McKenzie Phys. Rev. B 80, 054505 (2009). pdf
Electronic and magnetic properties of the ionic Hubbard model on the striped triangular lattice at 3/4 filling J. Merino, R. H. McKenzie, and B. J. Powell Phys. Rev. B 80, 045116 (2009). pdf
Synthetic routes to new physics B. J. Powell Chem. Aust., 76, 18 (2009). pdf
A unified explanation of the Kadowaki-Woods ratio in strongly correlated metals A. C. Jacko, J. O. Fjaerestad, and B. J. Powell Nature Phys. 5, 422 (2009). pdf
Preparation of Metal Mixed Plastic Superconductors: Electrical Properties of Tin-Antimony Thin Films on Plastic Substrates A. P. Stephenson, U. Divakar, A. P. Micolich, P. Meredith, and B. J. Powell J. Appl. Phys. 105, 093909 (2009). pdf
Interplay of frustration, magnetism, charge ordering, and covalency in a model of Na_0.5CoO₂ J. Merino, B. J. Powell, and R. H. McKenzie Phys. Rev. B 79, 161103(R) (2009). pdf
Vertex Corrections and the Korringa Ratio in Strongly Correlated Electron Materials E. Yusuf, B. J. Powell, and R. H. McKenzie J. Phys.: Condens. Matter 21, 195601 (2009). pdf
Toward the parametrization of the Hubbard model for salts of bis(ethylenedithio)tetrathiafulvalene: A density functional study of isolated molecules E. Scriven and B. J. Powell J. Chem. Phys. 130, 104508 (2009). pdf

2008

A phenomenological model of the superconducting state of the Bechgaard salts

B. J. Powell

J. Phys.: Condens. Matter 20, 345234 (2008).

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Pomeranchuk instability: symmetry breaking and experimental signatures

J. Quintanilla, C. Hooley, B. J. Powell, A. J. Schofield and M. Haque

Physica B 403, 1279 (2008).

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2007

Transition dipole strength of eumelanin J. J. Riesz, J. B. Gilmore, R. H. McKenzie, B. J. Powell, M. R. Pederson, and P. Meredith Phys. Rev. E 76, 021915 (2007). pdf
Antiferromagnetic Spin Fluctuations in the Metallic Phase of Quasi-Two-Dimensional Organic Superconductors E. Yusuf, B. J. Powell, and R. H. McKenzie Phys. Rev. B 75, 214515 (2007). pdf
Convergent Proton Transfer Photocycles Violate Mirror Image Symmetry in a Key Melanin Monomer S. Olsen, J. Riesz, I. Mahadevan, A. Coutts, J. Bothma, B.J. Powell, R. H. McKenzie, S.C. Smith and P. Meredith J. Am. Chem. Soc., 129, 6672, (2007). pdf
Symmetry of the Superconducting Order Parameter in Frustrated Systems Determined by the Spatial Anisotropy of Spin Correlations B. J. Powell and R. H. McKenzie Phys. Rev. Lett. 98, 027005 (2007). pdf

2006

Mixed order parameters, accidental nodes and broken time reversal symmetry in organic superconductors: a group theoretical analysis

B. J. Powell

J. Phys.: Condens. Matter 18, L575 (2006).

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Strong electronic correlations in superconducting organic charge transfer salts

B. J. Powell and R. H. McKenzie

J. Phys.: Condens. Matter 18, R827 (2006).

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Superconductivity in Metal-mixed Ion-Implanted Polymer Films

A. P. Micolich, E. Tavenner, B. J. Powell, A. R. Hamilton, M. T. Curry, R. E. Giedd and P. Meredith

Appl. Phys. Lett. 89, 152503 (2006).

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Ferromagnetism, paramagnetism and a Curie-Weiss metal in an electron doped Hubbard model on a triangular lattice

J. Merino, B.J. Powell and R.H. McKenzie

Phys. Rev. B 73, 235107 (2006).

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The effect of irradiation-induced disorder on the conductivity and critical temperature of the organic superconductor κ-(BEDT-TTF)₂Cu(SCN)₂

J. G. Analytis, A. Ardavan, S. J. Blundell, R. L. Owen, E. F. Garman, C. Jeynes, and B. J. Powell

Phys. Rev. Lett. 96, 177002 (2006).

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Towards Structure-Property-Function Relationships for Eumelanin

P. Meredith, B. J. Powell, J. Riesz, S. Nighswander-Rempel, M. R. Pederson and E. Moore

Soft Matter 2, 37 (2006).

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Chemical and Structural Disorder in Eumelanins - A Possible Explanation for Broad Band Absorbance

M. L. Tran, B. J. Powell and P. Meredith

Biophys. J. 90, 743 (2006).

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2005

Half-Filled Layered Organic Superconductors and the Resonating-Valence-Bond Theory of the Hubbard-Heisenberg Model

B. J. Powell and R.H. McKenzie

Phys. Rev. Lett. 94, 047004 (2005).

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5,6-dihydroxyindole-2-carboxylic acid (DHICA): a First Principles Density-Functional Study

B. J. Powell

Chem. Phys. Lett. 402, 111 (2005)

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Broad Band Photon Harvesting Biomolecules for Photovoltaics

P. Meredith, B. J. Powell, J. Riesz, R. Vogel, D. Blake, I. Kartini, G. Will and S. Subianto

In Artificial Photosynthesis: From Basic Biology to Industrial Application (Wiley, Chichester, 2005) C. Critchley and A. Collings (Eds.)

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2004

A First Principles Density-Functional Calculation of the Electronic and Vibrational Structure of the Key Melanin Monomer

B. J. Powell, T. Baruah, N. Bernstein, K. Brake, R. H. McKenzie, P. Meredith and M. R. Pederson

J. Chem. Phys. 120, 8608 (2004).

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On the Relationship Between the Critical Temperature and the London Penetration Depth in Layered Organic Superconductors

B. J. Powell and R. H. McKenzie

J. Phys.: Condens. Matter 16, L367 (2004).

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First-principles density-functional calculation of the Raman spectra of BEDT-TTF

K. Brake, B. J. Powell, R. H. McKenzie, M. R. Pederson and T. Baruah

J. Phys. IV (France) 114, 293 (2004).

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The origin of the difference of the superconducting critical temperatures of the β_H and β_L phases of β-(BEDT-TTF)₂I₃

B. J. Powell

J. Phys. IV (France) 114, 363 (2004).

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Dependence of the Superconducting Transition Temperature of Organic Molecular Crystals on Intrinsically Non-Magnetic Disorder: a Signature of either Unconventional Superconductivity or Atypical Local Magnetic Moment Formation

B. J. Powell and R. H. McKenzie

Phys. Rev. B 69, 024519 (2004).

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