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… - Journal of the American …, 2022 - ACS Publications
Spin-crossover (SCO) materials display many fascinating behaviors including collective
phase transitions and spin-state switching controlled by external stimuli, eg, light and …

Gapless spinons and a field-induced soliton gap in the hyperhoneycomb Cu oxalate framework compound [(

C Dissanayake, AC Jacko, K Kumarasinghe, R Munir… - Physical Review B, 2023 - APS
We report a detailed study of the specific heat and magnetic susceptibility of single crystals
of a spin-liquid candidate: the hyperhoneycomb Cu oxalate framework compound [(C 2 H 5) …

Interplay of Dipoles and Spins in κ-(BEDT-TTF) 2 X, where X= Hg (SCN) 2 Cl, Hg (SCN) 2 Br, Cu [N (CN) 2] Cl, Cu [N (CN) 2] Br, and Ag 2 (CN) 3

AC Jacko, EP Kenny, BJ Powell - Physical Review B, 2020 - APS
We combine first-principles density functional calculations with empirical relationships for
the Coulomb interactions in the monomer model of κ-(BEDT-TTF) 2 X. This enables us to …

Modulation of magnetoelectric coupling through systematically engineered spin canting in nickel–zinc ferrite

JH Cho, YJ Kim, SH Kim, YJ Lee… - Journal of the …, 2022 - Wiley Online Library
A nickel–zinc ferrite system, which is one of the well‐known versatile soft‐ferromagnetic
oxides, was investigated in terms of magnetoelectric (ME) coupling at room temperature …

Topological superconductivity from doping a triplet quantum spin liquid in a flat-band system

MF López, BJ Powell, J Merino - Physical Review B, 2022 - APS
We explore superconductivity in strongly interacting electrons on a decorated honeycomb
lattice (DHL). An easy-plane ferromagnetic interaction arises from spin-orbit coupling in the …

Spin-0 Mott insulator to metal to spin-1 Mott insulator transition in the single-orbital Hubbard model on the decorated honeycomb lattice

HL Nourse, RH McKenzie, BJ Powell - Physical Review B, 2021 - APS
We study the interplay of strong electron correlations and intratriangle spin exchange at two-
thirds filling of the single-orbital Hubbard model on the decorated honeycomb lattice using …

Quasi-one dimensional magnetic interactions in the three-dimensional hyper-honeycomb framework [(C 2 H 5) 3 NH] 2 Cu 2 (C 2 O 4) 3

AC Jacko, BJ Powell - Physical Chemistry Chemical Physics, 2021 - pubs.rsc.org
The Cu (II) ions in [(C2H5) 3NH] 2Cu2 (C2O4) 3 form a hyperhoneycomb lattice and show
no indication of long-range magnetic order down to 60 mK. It has therefore been suggested …

Spin-orbit coupling in

AC Jacko, AL Khosla, J Merino, BJ Powell - Physical Review B, 2017 - APS
Spin-orbit coupling in crystals is known to lead to unusual direction-dependent exchange
interactions; however understanding of the consequences of such effects in molecular …

Unconventional superconductivity near a flat band in organic and organometallic materials

J Merino, MF López, BJ Powell - Physical Review B, 2021 - APS
We study electron correlation driven superconductivity on a decorated honeycomb lattice
(DHL), which has a low-energy flat band. On doping, we find singlet superconductivity with …

Magnetism and topological phases in an interacting decorated honeycomb lattice with spin-orbit coupling

MF López, J Merino - Physical Review B, 2020 - APS
We study the interplay between spin-orbit coupling (SOC) and Coulomb repulsion in a
Hubbard model on a decorated honeycomb lattice which leads to a plethora of phases …