Magnetic and nematic orderings in spin-1 antiferromagnets with single-ion anisotropy

Magnetic and nematic orderings in spin-1 antiferromagnets with single-ion anisotropy

We study a spin-one Heisenberg model with exchange interaction, J, uniaxial single-ion exchange anisotropy, D, and Zeeman coupling to a magnetic field, B, parallel to the symmetry axis. We com- pute the (D/J,B/J) quantum phase diagram for square and simple cubic lattices by combining an- alytical an...

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Main Authors: Batista, Cristian D., Wierschem, Keola, Kato, Yasuyuki, Nishida, Yusuke, Sengupta, Pinaki
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2013
Online Access:https://hdl.handle.net/10356/96315
http://hdl.handle.net/10220/10213
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-963152020-03-07T12:37:21Z Magnetic and nematic orderings in spin-1 antiferromagnets with single-ion anisotropy Batista, Cristian D. Wierschem, Keola Kato, Yasuyuki Nishida, Yusuke Sengupta, Pinaki School of Physical and Mathematical Sciences We study a spin-one Heisenberg model with exchange interaction, J, uniaxial single-ion exchange anisotropy, D, and Zeeman coupling to a magnetic field, B, parallel to the symmetry axis. We com- pute the (D/J,B/J) quantum phase diagram for square and simple cubic lattices by combining an- alytical and Quantum Monte Carlo approaches, and find a transition between XY-antiferromagnetic and ferronematic phases that spontaneously break the U(1) symmetry of the model. In the language of bosonic gases, this is a transition between a Bose-Einstein condensate (BEC) of single bosons and a BEC of pairs. Our work opens up new avenues for measuring this transition in real magnets. Published version 2013-06-12T01:42:19Z 2019-12-06T19:28:46Z 2013-06-12T01:42:19Z 2019-12-06T19:28:46Z 2012 2012 Journal Article Weickert, F., Küchler, R., Steppke, A., Pedrero, L., Nicklas, M., Brando, M., et al. (2012). Low-temperature thermodynamic properties near the field-induced quantum critical point in NiCl2-4SC(NH2)2. Physical Review B, 85(18), 184408-. 1098-0121 https://hdl.handle.net/10356/96315 http://hdl.handle.net/10220/10213 10.1103/PhysRevB.86.201108 en Physical review B © 2012 American Physical Society. This paper was published in Physical Review B and is made available as an electronic reprint (preprint) with permission of American Physical Society. The paper can be found at the following official DOI: [http://dx.doi.org/10.1103/PhysRevB.86.201108].  One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
description We study a spin-one Heisenberg model with exchange interaction, J, uniaxial single-ion exchange anisotropy, D, and Zeeman coupling to a magnetic field, B, parallel to the symmetry axis. We com- pute the (D/J,B/J) quantum phase diagram for square and simple cubic lattices by combining an- alytical and Quantum Monte Carlo approaches, and find a transition between XY-antiferromagnetic and ferronematic phases that spontaneously break the U(1) symmetry of the model. In the language of bosonic gases, this is a transition between a Bose-Einstein condensate (BEC) of single bosons and a BEC of pairs. Our work opens up new avenues for measuring this transition in real magnets.
author2 School of Physical and Mathematical Sciences
author_facet School of Physical and Mathematical Sciences
Batista, Cristian D.
Wierschem, Keola
Kato, Yasuyuki
Nishida, Yusuke
Sengupta, Pinaki
format Article
author Batista, Cristian D.
Wierschem, Keola
Kato, Yasuyuki
Nishida, Yusuke
Sengupta, Pinaki
spellingShingle Batista, Cristian D.
Wierschem, Keola
Kato, Yasuyuki
Nishida, Yusuke
Sengupta, Pinaki
Magnetic and nematic orderings in spin-1 antiferromagnets with single-ion anisotropy
author_sort Batista, Cristian D.
title Magnetic and nematic orderings in spin-1 antiferromagnets with single-ion anisotropy
title_short Magnetic and nematic orderings in spin-1 antiferromagnets with single-ion anisotropy
title_full Magnetic and nematic orderings in spin-1 antiferromagnets with single-ion anisotropy
title_fullStr Magnetic and nematic orderings in spin-1 antiferromagnets with single-ion anisotropy
title_full_unstemmed Magnetic and nematic orderings in spin-1 antiferromagnets with single-ion anisotropy
title_sort magnetic and nematic orderings in spin-1 antiferromagnets with single-ion anisotropy
publishDate 2013
url https://hdl.handle.net/10356/96315
http://hdl.handle.net/10220/10213
_version_ 1681044414395318272

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