Journal ArticleDOI
Compressibility divergence and the finite temperature Mott transition.
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TLDR
This work demonstrates the divergence in the behavior of the compressibility near the density driven Mott transition at finite temperatures using DMFT and quantum Monte Carlo simulations in the one-band and the two-band Hubbard model.Abstract:
In the context of the dynamical mean-field theory (DMFT) of the Hubbard model, we study the behavior of the compressibility near the density driven Mott transition at finite temperatures. We demonstrate this divergence using DMFT and quantum Monte Carlo simulations in the one-band and the two-band Hubbard model. We supplement this result with considerations based on the Landau theory framework, and discuss the relevance of our results to the alpha-gamma end point in cerium.read more
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Electronic structure calculations with dynamical mean-field theory
Gabriel Kotliar,Sergey Y. Savrasov,Kristjan Haule,V. S. Oudovenko,Olivier Parcollet,Chris A. Marianetti +5 more
TL;DR: In this article, a review of the basic ideas and techniques of spectral density functional theory which are currently used in electronic structure calculations of strongly correlated materials where the one-dimensional electron description breaks down is presented.
Journal ArticleDOI
Continuous-time Monte Carlo methods for quantum impurity models
Emanuel Gull,Andrew J. Millis,Alexander I. Lichtenstein,Alexey N. Rubtsov,Matthias Troyer,Philipp Werner +5 more
TL;DR: In this paper, the continuous-time quantum Monte Carlo (QMC) algorithm is used to solve the local correlation problem in quantum impurity models with high and low energy scales and is effective for wide classes of physically realistic models.
Journal ArticleDOI
Theory of universal incoherent metallic transport
TL;DR: A universal framework of incoherent metallic transport in which quantities are bounded could be the way forward as discussed by the authors, where linear resistivity across many strongly correlated materials at high temperatures has no satisfactory explanation.
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Calculated Phonon Spectra of Plutonium at High Temperatures
TL;DR: The spectrum of the body-centered cubic phase shows an instability at zero temperature over a broad region of the wave vectors, indicating that this phase is highly anharmonic and can be stabilized at high temperatures by its phonon entropy.
Journal ArticleDOI
Electronic phases in twisted bilayer graphene at magic angles as a result of Van Hove singularities and interactions
TL;DR: In this article, a microscopic model that takes into account interactions and the Van Hove singularities in the density of states of twisted bilayer graphene at doping corresponding to one particle ($\ensuremath{
u}=1$) per moir\'e unit cell and study how superconductivity emerges was proposed.
References
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Book
Metal-insulator transitions
TL;DR: In this article, a discussion is given of some aspects of the metal insulator transition and the status of the "minimum metallic conductivity" is discussed, and the concept is valid for liquids and in some, but not all, solid systems.