Quantum phase diagram of a frustrated antiferromagnet on the bilayer honeycomb lattice

We study the spin-1/2 Heisenberg antiferromagnet on a bilayer honeycomb lattice including interlayer frustration. Using a set of complementary approaches, namely, Schwinger bosons, dimer series expansion, bond operators, and exact diagonalization, we map out the quantum phase diagram. Analyzing grou...

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Detalles Bibliográficos
Autores principales:	Zhang, Hao, Lamas, Carlos Alberto, Arlego, Marcelo José Fabián, Brenig, Wolfram
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2016
Materias:	Física magnetismo cuántico
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/63842 https://journals.aps.org/prb/abstract/10.1103/PhysRevB.93.235150
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-63842
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Física magnetismo cuántico
spellingShingle	Física magnetismo cuántico Zhang, Hao Lamas, Carlos Alberto Arlego, Marcelo José Fabián Brenig, Wolfram Quantum phase diagram of a frustrated antiferromagnet on the bilayer honeycomb lattice
topic_facet	Física magnetismo cuántico
description	We study the spin-1/2 Heisenberg antiferromagnet on a bilayer honeycomb lattice including interlayer frustration. Using a set of complementary approaches, namely, Schwinger bosons, dimer series expansion, bond operators, and exact diagonalization, we map out the quantum phase diagram. Analyzing ground-state energies and elementary excitation spectra, we find four distinct phases, corresponding to three collinear magnetic long-range ordered states, and one quantum disordered interlayer dimer phase. We detail that the latter phase is adiabatically connected to an exact singlet product ground state of the bilayer, which exists along a line of maximum interlayer frustration. The order within the remaining three phases will be clarified.
format	Articulo Articulo
author	Zhang, Hao Lamas, Carlos Alberto Arlego, Marcelo José Fabián Brenig, Wolfram
author_facet	Zhang, Hao Lamas, Carlos Alberto Arlego, Marcelo José Fabián Brenig, Wolfram
author_sort	Zhang, Hao
title	Quantum phase diagram of a frustrated antiferromagnet on the bilayer honeycomb lattice
title_short	Quantum phase diagram of a frustrated antiferromagnet on the bilayer honeycomb lattice
title_full	Quantum phase diagram of a frustrated antiferromagnet on the bilayer honeycomb lattice
title_fullStr	Quantum phase diagram of a frustrated antiferromagnet on the bilayer honeycomb lattice
title_full_unstemmed	Quantum phase diagram of a frustrated antiferromagnet on the bilayer honeycomb lattice
title_sort	quantum phase diagram of a frustrated antiferromagnet on the bilayer honeycomb lattice
publishDate	2016
url	http://sedici.unlp.edu.ar/handle/10915/63842 https://journals.aps.org/prb/abstract/10.1103/PhysRevB.93.235150
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bdutipo_str	Repositorios
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Quantum phase diagram of a frustrated antiferromagnet on the bilayer honeycomb lattice

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