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Metal-Insulator and Magnetic Phase Diagram of CaRuO from Auxiliary Field Quantum Monte Carlo and Dynamical Mean Field Theory
Hongxia Hao, Antoine Georges, Andrew J. Millis +3
Layered perovskite ruthenium oxides exhibit a striking series of metal-insulator and magnetic-nonmagnetic phase transitions easily tuned by temperature, pressure, epitaxy, and nonl…
Nature of symmetry breaking at the excitonic insulator transition: TaNiSe
Giacomo Mazza, Malte Rösner, Lukas Windgätter +5
TaNiSe is one of the most promising materials for hosting an excitonic insulator ground state. While a number of experimental observations have been interpreted in this way…
Ground-state properties of the hydrogen chain: insulator-to-metal transition, dimerization, and magnetic phases
Mario Motta, Claudio Genovese, Fengjie Ma +14
Accurate and predictive computations of the quantum-mechanical behavior of many interacting electrons in realistic atomic environments are critical for the theoretical design of ma…
Direct comparison of many-body methods for realistic electronic Hamiltonians
Kiel T. Williams, Yuan Yao, Jia Li +22
A large collaboration carefully benchmarks 20 first principles many-body electronic structure methods on a test set of 7 transition metal atoms, and their ions and monoxides. Good…
Charge stiffness and long-range correlation in the optically induced -pairing state of the one-dimensional Hubbard model
Tatsuya Kaneko, Seiji Yunoki, Andrew J. Millis
We show that optical excitation of the Mott insulating phase of the one-dimensional Hubbard model can create a state possessing two of the hallmarks of superconductivity: a nonvani…
Negative absolute conductivity in photoexcited metals
Giuliano Chiriacò, Andrew J. Millis, Igor L. Aleiner
We show that in a model of a metal photoexcited by a transient pump pulse resonant with a phonon mode the absolute dc conductivity may become negative, depending on the interplay b…