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Related papers: Truncated mass divergence in a Mott metal

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We report on the dramatic slowing down of the charge carrier dynamics in a quasi-two-dimensional organic conductor, which can be reversibly tuned through the Mott metal-insulator transition (MIT). At the finite-temperature critical endpoint…

Strongly Correlated Electrons · Physics 2015-06-02 B. Hartmann , D. Zielke , J. Polzin , T. Sasaki , J. Müller

The possibility of the strong electron-electron interaction driven insulating phase from the metallic phase in two-dimensions has been suggested for clean systems without intentional disorder, but its rigorous demonstration is still…

Strongly Correlated Electrons · Physics 2021-01-04 Byoung Hee Moon , Gang Hee Han , Miloš M. Radonjić , Hyunjin Ji , Vladimir Dobrosavljević

The electrical control of a material's conductivity is at the heart of modern electronics. Conventionally, this control is achieved by tuning the density of mobile charge carriers. A completely different approach is possible in Mott…

In this overview we provide a general introduction to metal-insulator transitions, with focus on specific mechanisms that can localize the electrons in absence of magnetic or charge ordering, and produce well defined quantum critical…

Strongly Correlated Electrons · Physics 2011-12-30 V. Dobrosavljevic

We present a theory of the metal-insulator transition in a disordered two-dimensional electron gas. A quantum critical point, separating the metallic phase which is stabilized by electronic interactions, from the insulating phase where…

Disordered Systems and Neural Networks · Physics 2007-05-23 Alexander Punnoose , Alexander M. Finkel'stein

We present the carrier transport properties in the vicinity of a doping-driven Mott transition observed at a field-effect transistor (FET) channel using a single crystal of the typical two-dimensional organic Mott insulator…

Strongly Correlated Electrons · Physics 2017-01-13 Yoshiaki Sato , Yoshitaka Kawasugi , Masayuki Suda , Hiroshi M. Yamamoto , Reizo Kato

One of the early triumphs of quantum physics is the explanation why some materials are metallic whereas others are insulating. While a treatment based on single electron states correctly predicts the character of most materials this…

Strongly Correlated Electrons · Physics 2015-09-02 S. Friedemann , H. Chang , M. B. Gamża , P. Reiss , X. Chen , P. Alireza , W. A. Coniglio , D. Graf , S. Tozer , F. M. Grosche

The metal-insulator transition in correlated electron systems, where electron states transform from itinerant to localized, has been one of the central themes of condensed matter physics for more than half a century. The persistence of this…

Strongly Correlated Electrons · Physics 2009-03-11 Jan Kunes , Alexey V. Lukoyanov , Vladimir I. Anisimov , Richard T. Scalettar , Warren E. Pickett

Mott insulators can be portrayed as "unsuccessful metals": systems in which a strong Coulomb repulsion prevents charge conduction notwithstanding the metal-like density of conduction electrons. The possibility to unlock such large density…

Strongly Correlated Electrons · Physics 2016-10-24 G. Mazza , A. Amaricci , M. Capone , M. Fabrizio

We investigate magnetoresistance of a square array of superconducting islands placed on a normal metal, which offers a unique tunable laboratory for realizing and exploring quantum many-body systems and their dynamics. A vortex Mott…

When electron-electron interaction dominates over other electronic energy scales, exotic, collective phenomena often emerge out of seemingly ordinary matter. The strongly correlated phenomena, such as quantum spin liquid and unconventional…

For the first order Metal Insulator Transitions we show that together with the d.c conductance zero there is a second critical point, where the dielectric constant becomes zero and further turns negative. At this point the metallic…

Superconductivity · Physics 2009-11-13 Ivan Z. Kostadinov , Bruce R. Patton

Quantum transitions between the Mott insulator and metals by controlling filling in two-dimensional square lattice are characterized by a large dynamical exponent $z=4$ where the origin of unusual metallic properties near the Mott insulator…

Strongly Correlated Electrons · Physics 2007-05-23 Masatoshi Imada , Fakher F. Assaad , Hirokazu Tsunetsugu , Yukitoshi Motome

Quantum states of strongly correlated electrons are of prime importance to understand exotic properties of condensed matter systems and the controllability over those states promises unique electronic devices such as a Mott memory. As a…

Materials Science · Physics 2017-07-12 Doohee Cho , Sangmo Cheon , Ki-Seok Kim , Sung-Hoon Lee , Yong-Heum Cho , Sang-Wook Cheong , Han Woong Yeom

Mottness is at the heart of the essential physics in a strongly correlated system as many novel quantum phenomena occur in the metallic phase near the Mott metal-insulator transition. We investigate the Mott transition in a Hubbard model by…

Strongly Correlated Electrons · Physics 2023-11-29 Yuekun Niu , Yu Ni , Jianli Wang , Leiming Chen , Ye Xing , Yun Song , Shiping Feng

Metallic states near the Mott insulator show a variety of quantum phases including various magnetic, charge ordered states and high-temperature superconductivity in various transition metal oxides and organic solids. The emergence of a…

Strongly Correlated Electrons · Physics 2023-12-05 Kensaku Takai , Youhei Yamaji , Fakher F. Assaad , Masatoshi Imada

If a material with an odd number of electrons per unit cell turns out to be insulating, Mott localisation may be invoked as an explanation. This is widely accepted for the layered compound 1T-TaS2, which has a low-temperature insulating…

Strongly Correlated Electrons · Physics 2020-06-24 C. J. Butler , M. Yoshida , T. Hanaguri , Y. Iwasa

In moir\'e heterostructures, gate-tunable insulating phases driven by electronic correlations have been recently discovered. Here, we use transport measurements to characterize the gate-driven metal-insulator transitions and the metallic…

To fully deploy the potential of semiconductor nanocrystal films as low-cost electronic materials, a better understanding of the amount of dopants required to make their conductivity metallic is needed. In bulk semiconductors, the critical…

Mesoscale and Nanoscale Physics · Physics 2016-06-15 Ting Chen , K. V. Reich , Nicolaas J. Kramer , Han Fu , Uwe R. Kortshagen , B. I. Shklovskii

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 crystal field. We show that a systematic consideration…

Strongly Correlated Electrons · Physics 2023-05-30 M. Vandelli , J. Kaufmann , V. Harkov , A. I. Lichtenstein , K. Held , E. A. Stepanov
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