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Hybrid Monte Carlo approach to the entanglement entropy of interacting fermions (2015)

Joaquín E. Drut and William J. Porter

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-09-15

Description: Author(s): Joaquín E. Drut and William J. Porter The Monte Carlo calculation of Rényi entanglement entropies S n of interacting fermions suffers from a well-known signal-to-noise problem, even for a large number of situations in which the infamous sign problem is absent. A few methods have been proposed to overcome this issue, such as ensemble swit… [Phys. Rev. B 92, 125126] Published Mon Sep 14, 2015

Keywords: Electronic structure and strongly correlated systems

Print ISSN: 1098-0121

Electronic ISSN: 1095-3795

Topics: Physics

Published by American Physical Society (APS)

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${\mathrm{Sr}}_{3}{\mathrm{Ir}}_{2}{\mathrm{O}}_{7}{\mathrm{F}}_{2}$: Topochemical conversion of a relativistic Mott state into a spin-orbit driven band insulator (2018)

Christi Peterson, Michael W. Swift, Zach Porter, Raphaële J. Clément, Guang Wu, G. H. Ahn, S. J. Moon, B. C. Chakoumakos, Jacob P. C. Ruff, Huibo Cao, Chris Van de Walle, and Stephen D. Wilson

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-10-17

Description: Author(s): Christi Peterson, Michael W. Swift, Zach Porter, Raphaële J. Clément, Guang Wu, G. H. Ahn, S. J. Moon, B. C. Chakoumakos, Jacob P. C. Ruff, Huibo Cao, Chris Van de Walle, and Stephen D. Wilson The topochemical transformation of single crystals of Sr 3 Ir 2 O 7 into Sr 3 Ir 2 O 7 F 2 is reported via fluorine insertion. Characterization of the newly formed Sr 3 Ir 2 O 7 F 2 phase shows a nearly complete oxidation of Ir 4 + cations into Ir 5 + that in turn drives the system from an antiferromagnetic Mott insulator... [Phys. Rev. B 98, 155128] Published Tue Oct 16, 2018

Keywords: Electronic structure and strongly correlated systems

Print ISSN: 1098-0121

Electronic ISSN: 1095-3795

Topics: Physics

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Electron doping in ${\mathrm{Sr}}_{3}{\mathrm{Ir}}_{2}{\mathrm{O}}_{7}$: Collapse of band gap and magnetic order (2018)

Michael W. Swift, Zach Porter, Stephen D. Wilson, and Chris G. Van de Walle

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-08-11

Description: Author(s): Michael W. Swift, Zach Porter, Stephen D. Wilson, and Chris G. Van de Walle The electron-doping-driven collapse of the charge gap and staggered magnetization of the spin-orbit-assisted Mott insulator Sr 3 Ir 2 O 7 is explored via first-principles computational methods. In the antiferromagnetic phase, the gap and magnetization are observed to decrease slowly with increasing dopin... [Phys. Rev. B 98, 081106(R)] Published Fri Aug 10, 2018

Keywords: Electronic structure and strongly correlated systems

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Topics: Physics

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Magnetic anisotropy and orbital ordering in ${\mathrm{Ca}}_{2}{\mathrm{RuO}}_{4}$ (2018)

D. G. Porter, V. Granata, F. Forte, S. Di Matteo, M. Cuoco, R. Fittipaldi, A. Vecchione, and A. Bombardi

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-09-26

Description: Author(s): D. G. Porter, V. Granata, F. Forte, S. Di Matteo, M. Cuoco, R. Fittipaldi, A. Vecchione, and A. Bombardi We review the magnetic and orbital ordered states in Ca 2 RuO 4 by performing resonant elastic x-ray scattering (REXS) at the Ru L 2 , 3 edges. In principle, the point symmetry at Ru sites does not constrain the direction of the magnetic moment below T N . However early measurements reported the ordered mom... [Phys. Rev. B 98, 125142] Published Tue Sep 25, 2018

Keywords: Electronic structure and strongly correlated systems

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Entanglement spectrum and Rényi entropies of nonrelativistic conformal fermions (2016)

William J. Porter and Joaquín E. Drut

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2016-10-08

Description: Author(s): William J. Porter and Joaquín E. Drut We characterize nonperturbatively the Rényi entropies of degree n = 2 , 3 , 4 , and 5 of three-dimensional, strongly coupled many-fermion systems in the scale-invariant regime of short interaction range and large scattering length, i.e., in the unitary limit. We carry out our calculations using lattice met… [Phys. Rev. B 94, 165112] Published Thu Oct 06, 2016

Keywords: Electronic structure and strongly correlated systems

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