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Magnetic properties of the conduction pi-electron system of kappa-BETS)2Mn[N(CN)2]3 have been probed using 13C NMR. At ambient pressure, the metal-insulator transition observed in the resistivity measurements below T~23K is shown to be…

Strongly Correlated Electrons · Physics 2015-06-04 O. M. Vyaselev , M. V. Kartsovnik , N. D. Kushch , E. B. Yagubskii

Recent experimental work shows that FePS$_3$ undergoes phase transitions from $C2/m$ ($\beta\sim107^{\circ}$) to $C2/m$ ($\beta\sim90^{\circ}$) at $6$ GPa and then to metallic $P\bar{3}1m$ at $14$ GPa, with the magnetic ordering wave vector…

Materials Science · Physics 2022-12-12 Yijie Zeng , Dao-Xin Yao , Man-Rong Li

We show that the resistivity perpendicular $\rho_c$ and parallel $\rho_a$ to the basal planes of different graphite samples show similar magnetic-field-driven metal-insulator-transitions at a field $B_c \sim 0.1 T$ applied parallel to the…

Strongly Correlated Electrons · Physics 2016-08-31 H. Kempa , P. Esquinazi , Y. Kopelevich

Application of an electric stimulus to a material with a metal-insulator transition can trigger a large resistance change. Resistive switching from an insulating into a metallic phase, which typically occurs by the formation of conducting…

The response to a parallel magnetic field of the very dilute insulating two-dimensional system of electrons in silicon MOSFET's is dramatic and similar to that found on the conducting side of the metal-insulator transition: there is a large…

Strongly Correlated Electrons · Physics 2009-10-31 K. M. Mertes , D. Simonian , M. P. Sarachik , S. V. Kravchenko , T. M. Klapwijk

The metal-insulator transition (MIT) in paramagnetic VO2 is studied within LDA+DMFT(IPT), which merges the local density approximation (LDA) with dynamical mean field theory (DMFT). With a fixed value of the Coulomb U=5.0eV, we show how the…

Strongly Correlated Electrons · Physics 2007-05-23 M. S. Laad , L. Craco , E. Müller-Hartmann

Ground state properties of spinless, extended Falicov-Kimball model (FKM) on a finite size triangular lattice with orbital magnetic field normal to the lattice are studied using numerical diagonalization and Monte-Carlo simulation methods.…

Strongly Correlated Electrons · Physics 2016-11-23 Umesh K. Yadav

We study the electronic structure, magnetic state, and phase stability of paramagnetic BiNiO$_3$ near a pressure-induced Mott insulator-to-metal transition (MIT) by employing a combination of density functional and dynamical mean-field…

Strongly Correlated Electrons · Physics 2019-11-06 I. Leonov , A. S. Belozerov , S. L. Skornyakov

We investigate a (semi-)metal to insulator transition (MIT) realized in geometrically frustrated electron systems on the basis of the Hubbard model on a three-dimensional pyrochlore lattice and a two-dimensional checkerboard lattice. Using…

Strongly Correlated Electrons · Physics 2009-11-10 Satoshi Fujimoto

We present a detailed NMR study of the insulator to metal transition induced by an applied pressure $p$ in the A15 phase of Cs$_{3}$C$_{60}$. We evidence that the insulating antiferromagnetic (AF) and superconducting (SC) phases only…

Strongly Correlated Electrons · Physics 2017-06-14 H. Alloul , P. Wzietek , T. Mito , D. Pontiroli , M. Aramini , M. Riccò , J. P. Itié , E. Elkaim

The physics of the Mott metal-insulator transition (MIT) has attracted huge interest in the last decades. However, despite broad efforts, some key theoretical predictions are still lacking experimental confirmation. In particular, it is not…

Strongly Correlated Electrons · Physics 2023-03-03 Sebastian Oberbauer , Shamil Erkenov , Werner Biberacher , Natalia D. Kushch , Rudolf Gross , Mark V. Kartsovnik

The two-dimensional organic conductor $\alpha$-(BEDT-TTF)$_2$I$_3$ undergoes a metal-insulator transition at $T_{\rm CO}=135$ K due to electronic charge ordering. We have conducted time-resolved investigations of its electronic properties…

Strongly Correlated Electrons · Physics 2016-06-15 Tobias Peterseim , Tomislav Ivek , Dieter Schweitzer , Martin Dressel

From the spin polarized density functional total energy calculations, we shown that the ground state of cubic perovskite RbMnF$_3$ is an antiferromagnetic (AFM) insulator due to the super-exchange mechanism, in agreement with the other…

Materials Science · Physics 2019-12-11 N. Tsogbadrakh , N. Tuvjargal , Chun Feng , J. Davaasambuu , O. Tegus

In the context of correlated insulators, where electron-electron interactions (U) drive the localization of charge carriers, the metal-insulator transition (MIT) is described as either bandwidth (BC) or filling (FC) controlled. Motivated by…

We show that a static electric field induces the transition from a ferromagnetic metal to an antiferromagnetic insulator owing to the Bloch oscillation of conduction electrons. In the steady state, the electric current is inversely…

Strongly Correlated Electrons · Physics 2020-07-28 Atsushi Ono , Sumio Ishihara

For more than a decade it was widely accepted that two-dimensional electrons are insulating at zero temperature and at zero magnetic-field. Experimentally it was demonstrated that, when placed in a strong perpendicular magnetic field, the…

Condensed Matter · Physics 2007-05-23 Y. Hanein , D. Shahar , Hadas Shtrikman , J. Yoon , C. C. Li , D. C. Tsui

MnAs exhibits a first-order phase transition from a ferromagnetic, high-spin metal NiAs-type hexagonal phase to a paramagnetic, lower-spin insulator MnP-type orthorhombic phase at T_C = 313 K. Here, we report the results of neutron…

Materials Science · Physics 2009-11-07 J. Mira , F. Rivadulla , J. Rivas , A. Fondado , R. Caciuffo , F. Carsughi , T. Guidi , J. B. Goodenough

We describe a new possible route to the metal-insulator transition in doped semiconductors such as Si:P or Si:B. We explore the possibility that the loss of metallic transport occurs through Mott localization of electrons into a quantum…

Strongly Correlated Electrons · Physics 2012-10-15 Andrew C. Potter , Maissam Barkeshli , John McGreevy , T. Senthil

It is shown that recent experiments indicating a metal-insulator transition in 2D electron systems can be interpreted in terms of a simple model, in which the resistivity is controlled by scattering at charged hole traps located in the…

Disordered Systems and Neural Networks · Physics 2009-10-31 Boris L. Altshuler , Dmitrii L. Maslov

The experimental studies of the paramagnetic-antiferromagnetic phase transition through M\"{o}ssbauer spectroscopy and measurements of temperature and field dependencies of magnetic susceptibility in the layered Cu$_{0.15}$Fe$_{0.85}$PS$_3$…

Computational Physics · Physics 2023-01-05 V. Pashchenko , O. Bludov , D. Baltrunas , K. Mazeika , S. Motria , K. Glukhov , Yu. Vysochanskii