Výsledky vyhledávání - "DIMENSIONAL QUANTUM ANTIFERROMAGNETS"

Spin liquid nature in the Heisenberg J1−J2 triangular antiferromagnet

Autor: Iqbal Y, Hu WJ, Thomale R, Poilblanc D, Becca F

We investigate the spin-$\frac{1}{2}$ Heisenberg model on the triangular lattice in the presence of nearest-neighbor $J_1$ and next-nearest-neighbor $J_2$ antiferromagnetic couplings. Motivated by recent findings from density-matrix renormalization g

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9145a5bbea48cf3dc6dcecaf16eb373c
https://hal.archives-ouvertes.fr/hal-01310410

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Spontaneous symmetry breaking in correlated wave functions

Autor: Federico Becca, Claudius Gros, Ryui Kaneko, Roser Valentí, Luca F. Tocchio

We show that Jastrow-Slater wave functions, in which a density-density Jastrow factor is applied onto an uncorrelated fermionic state, may possess long-range order even when all symmetries are preserved in the wave function. This fact is mainly relat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ef0a20df2fc73d1d22014e8602758e21
http://arxiv.org/abs/1510.08653

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Three-sublattice order in the SU(3) Heisenberg model on the square and triangular lattice

Autor: Laura Messio, Bela Bauer, Andreas M. Läuchli, Matthias Troyer, Frédéric Mila, Karlo Penc, Philippe Corboz

Publikováno v: Physical Review B: Condensed Matter and Materials Physics (1998-2015)
Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2012, 85 (12), ⟨10.1103/PhysRevB.85.125116⟩
Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2012, 85 (12), ⟨10.1103/PhysRevB.85.125116⟩

We present a numerical study of the SU(3) Heisenberg model of three-flavor fermions on the triangular and square lattice by means of the density-matrix renormalization group (DMRG) and infinite projected entangled-pair states (iPEPS). For the triangu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::11b1be229e71157ec1e846f13de17651
https://hal.archives-ouvertes.fr/hal-02452774

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Longitudinal excitations in triangular lattice antiferromagnets

Autor: Yang Xian, Mohammad Merdan

Publikováno v: Merdan, M & Xian, Y 2012, ' Longitudinal excitations in triangular lattice antiferromagnets ', Journal of Low Temperature Physics, vol. 171, pp. 797–807 . https://doi.org/10.1007/s10909-012-0778-1

We study the longitudinal excitations of quantum antiferromagnets on a triangular lattice by a recently proposed microscopic many-body approach based on magnon-density waves. We calculate the full longitudinal excitation spectra of the antiferromagne

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