New Spin on Metal-Insulator Transitions

• Format: eBook
• Language: English
• Published: Basel MDPI - Multidisciplinary Digital Publishing Institute 2023
• Subjects: Energy industries and utilities; History of engineering and technology; Technology: general issues; (TMTTF)2X; 13C-NMR; Anderson impurity; anderson localization; Anderson localization; bandwidth tuning; carrier localization; cellular dynamical mean field theory; charge crystal; charge density wave; charge glass; charge order; charge-transfer salts; charge-transfer solid crystals; cluster mean field theory; coherent potential approximation; colossal magnetoresistance; cooling rate; core-shell model; data science; dielectric response; dielectric spectroscopy; dilute 2DEGs; disorder; disordered systems; dynamical cluster approximation; dynamical mean field theory; electric double-layer transistor; electrical resistivity; electron-lattice coupling; extended Hubbard model; Fabre salts; FFLO; FFLO phase; FFLO state; FTIR; geometrical frustration; grain size; heat capacity; heavy fermion compounds; infrared spectroscopy; intra-dimer charge and spin degrees of freedom; Kondo destruction; low-temperature crystal structure; magnetic exchange beyond Heisenberg; manganites; materials database; metal insulator transition; metal-insulator transition; metal-insulator transitions; molecular conductor; molecular conductors; Mott insulator; Mott organics; Mott transition; n/a; negative chemical pressure; negative magnetoresistance; neural network; nickelates; optical conductivity; organic charge-transfer salts; organic conductor; organic conductors; organic superconductor; organics; partial chemical substitution; penetration depth measurement; percolation theory; phase coherence length; phase transitions; Planckian dissipation; quantum criticality; quantum impurity solver; quantum spin liquid; random disorder; relaxor-ferroelectrics; resistance; resistivity maxima; spin density wave; spin liquid; spinon theory; strange metals; strong electron correlations; strongly correlated electron systems; strongly correlated electrons; strongly correlated systems; superconductivity; thermal conductivity; twisted transition-metal dichalcogenide bilayers; two-dimensional metal; typical medium theory; uniaxial strain; variable range hopping; vibrational spectroscopy; vortex dynamics
• Online Access: Open Access: DOAB: description of the publication; Open Access: DOAB, download the publication

 Metal‒insulator transitions (MITs) constitute a core subject of fundamental condensed matter research. The localization of conduction electrons occurs in a large variety of materials and engenders intriguing quantum phenomena such as unconventional superconductivity and exotic magnetism. Nearby an MIT, minuscule changes of the interaction strength via chemical substitution, doping, physical pressure, or even disorder can trigger spectacular resistivity changes from zero in a superconductor to infinity in an insulator near T = 0. While approaching an insulating state from the conducting side, deviations from Fermi-liquid transport in bad and strange metals are the rule rather than the exception. As the drosophila of electron‒electron interactions, the Mott MIT receives particular attention from theory as it can be studied using the Hubbard model. On the experimental side, organic charge-transfer salts and transition metal oxides are versatile platforms for working toward solving the puzzles of correlated electron systems. This Special Issue provides a view into the ongoing research endeavors investigating emergent phenomena around MITs.