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Effects of Zeeman field on a spin Bose-metal phase

Lai, Hsin-Hua and Motrunich, Olexei I. (2010) Effects of Zeeman field on a spin Bose-metal phase. Physical Review B, 82 (12). Art. No. 125116. ISSN 0163-1829. doi:10.1103/PhysRevB.82.125116.

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We consider Zeeman field effects on a spin Bose-metal (SBM) phase on a two-leg triangular ladder. This phase was found in a spin-1/2 model with ring exchanges [D. N. Sheng, O. I. Motrunich, and M. P. A. Fisher, Phys. Rev. B 79, 205112 (2009)] and was also proposed to appear in an interacting electronic model with longer-ranged repulsion [H.-H. Lai and O. I. Motrunich, Phys. Rev. B 81, 045105 (2010)]. Using bosonization of a spinon-gauge theory, we study the stability of the SBM phase and its properties under the field. We also explore phases arising from potential instabilities of the SBM; in all cases, we find a gap to spin-1 excitations while spin-nematic correlations are power law. We discuss two-dimensional analogues of these phases where spinons can pair with their own species.

Item Type:Article
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Motrunich, Olexei I.0000-0001-8031-0022
Additional Information:© 2010 The American Physical Society. Received 16 June 2010; published 16 September 2010. We would like to thank C.-C. Chen, M. P. A. Fisher, and P. A. Lee for useful discussions. This research is supported by the National Science Foundation through Grant No. DMR-0907145 and by the A. P. Sloan Foundation.
Funding AgencyGrant Number
Alfred P. Sloan FoundationUNSPECIFIED
Issue or Number:12
Classification Code:PACS: 71.10.Hf, 71.10.Pm, 75.10.Kt
Record Number:CaltechAUTHORS:20101011-143452308
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:20386
Deposited By: Tony Diaz
Deposited On:15 Nov 2010 19:17
Last Modified:08 Nov 2021 23:59

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