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At the Mott transition, electron-electron interaction changes a metal, in which electrons are itinerant, to an insulator, in which electrons are localized. This phenomenon is central to quantum materials. Here we contribute to its…

Strongly Correlated Electrons · Physics 2019-02-20 C. Walsh , P. Sémon , D. Poulin , G. Sordi , A. -M. S. Tremblay

On demand current-driven insulator-to-metal transition (IMT) is pivotal for the next generation of energy-efficient and scalable microelectronics. IMT is a key phenomenon observed in various quantum materials, and it is enabled by the…

Metal-insulator transitions involve a mix of charge, spin, and structural degrees of freedom, and when strongly-correlated, can underlay the emergence of exotic quantum states. Mott insulators induced by the opening of a Coulomb gap are an…

Strongly Correlated Electrons · Physics 2021-05-14 Yejun Feng , Yishu Wang , D. M. Silevitch , S. E. Cooper , D. Mandrus , Patrick A. Lee , T. F. Rosenbaum

Measurements of conductance $G$ on short, wide, high-mobility Si-MOSFETs reveal both a two-dimensional metal-insulator transition (MIT) at moderate temperatures (1 $<~ T <$ 4~K) and mesoscopic fluctuations of the conductance at low…

Strongly Correlated Electrons · Physics 2009-10-30 K. P. Li , Dragana Popovic , S. Washburn

An abrupt first-order metal-insulator transition (MIT) without structural phase transition is first observed by current-voltage measurements and micro-Raman scattering experiments, when a DC electric field is applied to a Mott insulator…

Strongly Correlated Electrons · Physics 2015-06-24 Yong-Sik Lim , Hyun-Tak Kim , B. G. Chae , D. H. Youn , K. O. Kim , K. Y. Kang , S. J. Lee , K. Kim

Dynamical mean-field theory (DMFT) has been employed in conjunction with density functional theory (DFT+DMFT) to investigate the metal-insulator transition (MIT) of strongly correlated $3d$ electrons due to quantum confinement. We shed new…

Strongly Correlated Electrons · Physics 2021-06-02 A. D. N. James , M. Aichhorn , J. Laverock

Iron oxide is a key compound to understand the state of the deep Earth. It has been believed that previously known oxides such as FeO and Fe2O3 will be dominant at the mantle conditions. However, recent observation of FeO2 shed another…

Strongly Correlated Electrons · Physics 2017-03-01 Bo Gyu Jang , Duck Young Kim , Ji Hoon Shim

For the immediate vicinity of the metal-insulator transition (MIT), data on the dependence of the resistivity rho on the charge carrier concentration n from an Si MOSFET experiment by Kravchenko et al. and from an AlAs quantum well study by…

Disordered Systems and Neural Networks · Physics 2007-05-23 A. Mobius

The orbital-selective electronic behavior is one of the most remarkable manifestations of strong electronic correlations in multi-orbital systems. A prominent example is the orbital-selective Mott transition (OSMT), which is characterized…

Strongly Correlated Electrons · Physics 2022-08-30 Evgeny A. Stepanov

The metal-insulator transition (MIT) is one of the remarkable electrical transport properties of atomically thin molybdenum disulphide (MoS2). Although the theory of electron-electron interactions has been used in modeling the MIT phenomena…

We present evidence that the metal-insulator transition (MIT) in a tensile strained NdNiO3 (NNO) film is facilitated by a redistribution of electronic density and neither requires Ni charge disproportionation nor symmetry change [1, 2].…

Strongly Correlated Electrons · Physics 2015-07-20 M. H. Upton , Yongseong Choi , Jian Liu , D. Meyers , S. Middey , J. Chakhalian , Jong-Woo Kim , Philip J. Ryan

V2O3 is the prototype system for the Mott transition, one of the most fundamental phenomena of electronic correlation. Temperature, doping or pressure induce a metal to insulator transition (MIT) between a paramagnetic metal (PM) and a…

First-order phase transitions in solids are notoriously challenging to study. The combination of change in unit cell shape, long range of elastic distortion, and flow of latent heat leads to large energy barriers resulting in domain…

Strongly Correlated Electrons · Physics 2013-08-23 Jae Hyung Park , Jim M. Coy , T. Serkan Kasirga , Chunming Huang , Zaiyao Fei , Scott Hunter , David H. Cobden

The insulator-to-metal transition (IMT) in strongly correlated materials, such as vanadium dioxide (VO2), offers a transformative platform for next-generation adaptive electronics and neuromorphic computing. However, harnessing this…

Materials Science · Physics 2026-04-22 Siyuan Huang , Shuaishuai Sun , Yin Shi , Wentao Wang , Chunhui Zhu , Huanfang Tian , Huaixin Yang , Jun Li , Jianqi Li

We study the quantum phase transition from an insulator to a metal realized at t'=t'_c > 0.5t in the ground state of the half-filled Hubbard chain with both nearest-neighbor (t) and next-nearest-neighbor (t') hopping. The study is carried…

Strongly Correlated Electrons · Physics 2007-05-23 G. I. Japaridze , R. M. Noack , D. Baeriswyl

We study analytically the Mott transition of the N-orbital Hubbard model using dynamical mean-field theory and a low-energy projection onto an effective Kondo model. It is demonstrated that the critical interaction at which the insulator…

Strongly Correlated Electrons · Physics 2009-11-07 S. Florens , A. Georges , G. Kotliar , O. Parcollet

The metal-insulator transition in one dimensional fermionic systems with long-range interaction is investigated. We have focused on an excitation spectrum by the exact diagonalization technique in sectors with different momentum quantum…

Strongly Correlated Electrons · Physics 2009-10-30 Yasuhiro Hatsugai

We present the first-ever multi-scale dynamical simulation of the temperature-controlled Mott metal-insulator transition in the Hubbard model. By integrating advanced electronic structure method and an efficient Gutzwiller/slave-boson…

Strongly Correlated Electrons · Physics 2021-02-19 Gia-Wei Chern

Metal-to-insulator transitions (MITs), particularly near room temperature, have been extensively studied in nonmagnetic and conventional ferromagnetic and antiferromagnetic systems, yet the co-emergence of MIT and altermagnetism (AM)…

The nature of the Mott transition in the absence of any symmetry braking remains a matter of debate. We study the correlation-driven insulator-to-metal transition in the prototypical 3D Mott system GaTa4Se8, as a function of temperature and…

Strongly Correlated Electrons · Physics 2015-06-22 A. Camjayi , C. Acha , R. Weht , M. G. Rodríguez , B. Corraze , E. Janod , L. Cario , M. J. Rozenberg
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