Molecular quantum materials: electronic phases and charge dynamics in two-dimensional organic solids

M Dressel, S Tomić - Advances in physics, 2020 - Taylor & Francis
This review provides a perspective on recent developments and their implications for our
understanding of novel quantum phenomena in the physics of two-dimensional organic …

Thirty-Year Anniversary of κ-(BEDT-TTF)2Cu2(CN)3: Reconciling the Spin Gap in a Spin-Liquid Candidate

A Pustogow - Solids, 2022 - mdpi.com
In 1991 the layered organic compound κ-(BEDT-TTF) 2 Cu 2 (CN) 3 with a triangular lattice
was synthesized for the first time. Although, originally, the focus was on the superconducting …

Rise and fall of Landau's quasiparticles while approaching the Mott transition

A Pustogow, Y Saito, A Löhle, M Sanz Alonso… - Nature …, 2021 - nature.com
Landau suggested that the low-temperature properties of metals can be understood in terms
of long-lived quasiparticles with all complex interactions included in Fermi-liquid …

Extended regime of metastable metallic and insulating phases in a two-orbital electronic system

M Vandelli, J Kaufmann, V Harkov, AI Lichtenstein… - Physical Review …, 2023 - APS
We investigate the metal-to-insulator phase transition driven by the density-density
electronic interaction in the quarter-filled model on a cubic lattice with two orbitals split by a …

Quantum critical phase of FeO spans conditions of Earth's lower mantle

WGD Ho, P Zhang, K Haule, JM Jackson… - Nature …, 2024 - nature.com
Seismic and mineralogical studies have suggested regions at Earth's core-mantle boundary
may be highly enriched in FeO, reported to exhibit metallic behavior at extreme pressure …

Phase coexistence at the first-order Mott transition revealed by pressure-dependent dielectric spectroscopy of

R Rösslhuber, A Pustogow, E Uykur, A Böhme, A Löhle… - Physical Review B, 2021 - APS
The dimer Mott insulator κ-(BEDT-TTF) 2 Cu 2 (CN) 3 can be tuned into metallic and
superconducting states on applying pressure of 1.5 kbar and more. We have performed …

Chasing the spin gap through the phase diagram of a frustrated Mott insulator

A Pustogow, Y Kawasugi, H Sakurakoji… - Nature …, 2023 - nature.com
The quest for entangled spin excitations has stimulated intense research on frustrated
magnetic systems. For almost two decades, the triangular-lattice Mott insulator κ-(BEDT-TTF) …

Ingredients for Generalized Models of κ-Phase Organic Charge-Transfer Salts: A Review

K Riedl, E Gati, R Valentí - Crystals, 2022 - mdpi.com
The families of organic charge-transfer salts κ-(BEDT-TTF) 2 X and κ-(BETS) 2 X, where
BEDT-TTF and BETS stand for the organic donor molecules C 10 H 8 S 8 and C 10 H 8 S 4 …

Chemical tuning of molecular quantum materials κ-[(BEDT-TTF) 1− x (BEDT-STF) x] 2 Cu 2 (CN) 3: from the Mott-insulating quantum spin liquid to metallic Fermi liquid

Y Saito, R Rösslhuber, A Löhle, MS Alonso… - Journal of Materials …, 2021 - pubs.rsc.org
The electronic properties of molecular conductors can be readily varied via physical or
chemical pressure as it enlarges the bandwidth W. This enables them to cross the Mott …

Effect of local magnetic moments on spectral properties and resistivity near interaction-and doping-induced Mott transitions

TB Mazitov, AA Katanin - Physical Review B, 2022 - APS
We study the effect of the formation and screening of local magnetic moments on the
temperature and interaction dependences of spectral functions and resistivity in the vicinity …