- published: 24 Jun 2016
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Mott insulators are a class of materials that should conduct electricity under conventional band theories, but are insulators when measured (particularly at low temperatures). This effect is due to electron–electron interactions, which are not considered in conventional band theory.
The bandgap in a Mott insulator exists between bands of like character, such as 3d character, whereas the bandgap in charge transfer insulators exists between anion and cation states, such as between O 2p and Ni 3d bands in NiO.
Although the band theory of solids had been very successful in describing various electrical properties of materials, in 1937 Jan Hendrik de Boer and Evert Johannes Willem Verwey pointed out that a variety of transition metal oxides predicted to be conductors by band theory (because they have an odd number of electrons per unit cell) are insulators.Nevill Mott and Rudolf Peierls then (also in 1937) predicted that this anomaly can be explained by including interactions between electrons.
Mott is both a surname and a given name. Notable people with the name include:
Original Title : Insulator to metal transitions and resistive switching in the narrow gap Mott Insulator AM4Q8 (A=Ga, Ge; M=V, Nb, Ta; Q=S, Se) Insulator to metal transitions and resistive switching in the narrow gap Mott Insulator AM4Q8 (A=Ga, Ge; M=V, Nb, Ta; Q=S, Se) - Laurent Cario EPICO 2012 - Electric Pulsed Induced Changes in Oxides (3556) December 12, 2012 – December 14, 2012 Buenos Aires, Argentina Hits on scivee.tv prior to youtube upload: 557
Hanns-Christoph Nägerl, University of Innsbruck.Title of talk "An atomic Mott insulator with strong attractive interactions", during ITAMP ZOQ CFEL Workshop on "Dynamical Correlations in Quantum Matter From Few- to Many-Body Systems", May 30th to June 1st, 2012 at the The Institute for Laser Physics of the University of Hamburg , Germany.
The research in Professor Nandini Trivedi’s group focuses on the effects of strong interactions in condensed matter systems and ultracold atoms in optical lattices. The basic idea is to understand how electrons and atoms get organized at very low temperatures and how new phases of matter emerge. For example, we examine quantum phase transitions between superfluids and Mott insulators in optical lattices and also how fermions become entangled into novel spin liquid states. We are also involved in many new avenues of research, including phases in complex oxides, such as high Tc superconductors and double perovskites, emerging form the interplay of charge, spin and orbital degrees of freedom. Our approach is to combine different types of quantum Monte Carlo simulations with analytical metho...
Date: February 26 Speaker: Christian Batista (Theoretical Division of Los Alamos National Laboratory) Title: Vortex Crystals in Frustrated Mott Insulators Abstract: The Bose-Einstein condensate is the simplest example of an ordered quatum state of matter. Since its discovery in 1924, this phenomenon has captivated the interest of several generations of physicists, including the most recent ones. The Nobel Prize in Physics 2001 that was awarded jointly to Eric A. Cornell, Wolfgang Ketterle and Carl E. Wieman for the achievement of Bose-Einstein condensation in dilute gases of alkali atoms is a testimony of this long standing interest. An attractive aspect of this quantum state of matter resides in its multiple incarnations, which include superconductivity (condensation of Cooper pairs) and ...
Indian Statistical Physics Community Meeting 2016 URL: https://www.icts.res.in/discussion_meeting/details/31/ DATES Friday 12 Feb, 2016 - Sunday 14 Feb, 2016 VENUE Ramanujan Lecture Hall, ICTS Bangalore This is an annual discussion meeting of the Indian statistical physics community which is attended by scientists, postdoctoral fellows, and graduate students, from across the country, working in the broad area of statistical physics. This meeting will cover all the 8 Topics covered at STATPHYS meetings, namely: 1) General and mathematical aspects rigorous results, exact solutions, probability theory, stochastic field theory, phase transitions and critical phenomena at equilibrium, information theory, optimization, etc. 2) Out-of-equilibrium aspects driven systems, transport theory, r...
PROGRAM: The ICTS Condensed Matter Programme 2011 Venue: Indian Insitute of Science, Bangalore Date: Friday 09 Dec, 2011 - Thursday 22 Dec, 2011 DESCRIPTION: The ICTS Condensed Matter Programme 2011 (ICMP 2011) consists of a 10 day Winter School (December 9 to December 18) followed by a 4 day International Conference (December 19 to December 22), both to be held in IISc. Bangalore. The school will have four lecture courses focusing on the core of modern condensed matter physics, while the conference will feature four days of talks at the very forefront of our subject, delivered by a cross-section of internationally eminent speakers. The school will also feature tutorial lectures, evening colloquia and a few research seminars. PROGRAM LINK: http://www.icts.res.in/program/ICMP2011
Spin and metal-insulator transitions (MIT) in transition metals compounds are among the most investigated phenomena in condensed matter physics. In recent years, a number of pressure - driven transitions from a wide gap Mott insulator to a metallic state in transition metal oxide materials were successfully described within the LDA+DMFT scheme which combines local density approximation (LDA) with dynamical mean - field theory (DMFT) to account for electronic correlations effects. Several illustrations for LDA+DMFT results will be given. In oxide MnO and Fe2O3 a metal - insulator transition is accompanied by the high-spin to low-spin transition, resulting in a magnetic moment collapse from magnetic moment of more than 4μB to about 1μB. On the other hand, in iron monoxide no magnetic collaps...
Frustration and multiorbital effect in Mott insulators and superconductors: an ab initio point of view Hits on scivee.tv prior to youtube upload: 600