Thermodynamics of the pyrochlore-lattice quantum Heisenberg antiferromagnet
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DOI: 10.1103/physrevb.100.024424
Abstract: We use the rotation-invariant Green's function method (RGM) and the high-temperature expansion (HTE) to study the thermodynamic properties of the Heisenberg antiferromagnet on the pyrochlore lattice. We discuss the excitation spectra as well as various… read more here.
Keywords: pyrochlore lattice; structure; heisenberg antiferromagnet; quantum ... See more keywords
S=12 kagome Heisenberg antiferromagnet revisited
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DOI: 10.1103/physrevb.100.155142
Abstract: We examine the perennial quantum spin-liquid candidate $S=1/2$ Heisenberg antiferromagnet on the kagome lattice. Our study is based on achieving Lanczos diagonalization of the Hamiltonian on a $48$ site cluster in sectors with dimensions as… read more here.
Keywords: antiferromagnet; heisenberg antiferromagnet; antiferromagnet revisited; kagome heisenberg ... See more keywords
Multiple magnon modes in spin- 12 Heisenberg antiferromagnet on simple square lattice in strong magnetic field
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DOI: 10.1103/physrevb.102.014409
Abstract: We discuss spin-$\frac12$ Heisenberg antiferromagnet on simple square lattice in magnetic field $H$ using recently proposed bond-operator technique. It is well known that magnetically ordered phases of quantum magnets are well described at least qualitatively… read more here.
Keywords: magnon modes; square lattice; magnetic field; heisenberg antiferromagnet ... See more keywords
Driven Hubbard model on a triangular lattice: Tunable Heisenberg antiferromagnet with a chiral three-spin term
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DOI: 10.1103/physrevb.105.054423
Abstract: We study the effects of a periodically varying electric field on the Hubbard model at half-filling on a triangular lattice. The electric field is incorporated through the phase of the nearest-neighbor hopping amplitude via the… read more here.
Keywords: hubbard model; model; triangular lattice; heisenberg antiferromagnet ... See more keywords
Dimerization tendencies of the pyrochlore Heisenberg antiferromagnet: A functional renormalization group perspective
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DOI: 10.1103/physrevb.105.054426
Abstract: Max Hering, 2 Vincent Noculak, 2 Francesco Ferrari, Yasir Iqbal, and Johannes Reuther 2 Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner Platz 1, 14109 Berlin, Germany Dahlem Center for Complex Quantum Systems and Fachbereich Physik,… read more here.
Keywords: group; dimerization tendencies; heisenberg antiferromagnet; antiferromagnet functional ... See more keywords
Strain tuning of highly frustrated magnets: Order and disorder in the distorted kagome Heisenberg antiferromagnet
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DOI: 10.1103/physrevb.105.094426
Abstract: Strain applied to a condensed-matter system can be used to engineer its excitation spectrum via artificial gauge fields, or it may tune the system through transitions between different phases. Here we demonstrate that strain tuning… read more here.
Keywords: system; highly frustrated; frustrated magnets; strain tuning ... See more keywords
Randomness-Induced Quantum Spin Liquid Behavior in the s=1/2 Random-Bond Heisenberg Antiferromagnet on the Pyrochlore Lattice.
Sign Up to like & getrecommendations! Published in 2019 at "Physical review letters"
DOI: 10.1103/physrevlett.123.087201
Abstract: We investigate the zero- and finite-temperature properties of the random-bond s=1/2 Heisenberg antiferromagnet on the pyrochlore lattice by the exact diagonalization and the Hams-de Raedt methods. We find that the randomness induces the gapless quantum… read more here.
Keywords: antiferromagnet; pyrochlore lattice; antiferromagnet pyrochlore; bond heisenberg ... See more keywords