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Insulating phases of electrons on a zigzag strip in the orbital magnetic field

Lai, Hsin-Hua and Motrunich, Olexei I. (2010) Insulating phases of electrons on a zigzag strip in the orbital magnetic field. Physical Review B, 82 (19). Art. No. 195119. ISSN 0163-1829. http://resolver.caltech.edu/CaltechAUTHORS:20101215-090601625

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Abstract

We consider electrons on a two-leg triangular ladder at half filling and in an orbital magnetic field. In a two-band regime in the absence of the field, the electronic system remains conducting for weak interactions since there is no four-fermion umklapp term. We find that in the presence of the orbital field there is a four-fermion umklapp and it is always relevant for repulsive interactions. Thus in this special ladder, the combination of the orbital magnetic field and interactions provides a mechanism to drive metal-insulator transition already at weak coupling. We discuss properties of the possible resulting phases C0S2 and various C0S1 and C0S0.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevB.82.195119 DOIArticle
http://prb.aps.org/abstract/PRB/v82/i19/e195119PublisherArticle
http://link.aps.org/doi/10.1103/PhysRevB.82.195119PublisherArticle
ORCID:
AuthorORCID
Motrunich, Olexei I.0000-0001-8031-0022
Additional Information:© 2010 The American Physical Society. Received 17 August 2010; published 12 November 2010. We would like to thank M. P. A. Fisher for useful discussions. This research is supported by the National Science Foundation through Grant No. DMR-0907145 and by the A. P. Sloan Foundation.
Funders:
Funding AgencyGrant Number
NSFDMR-0907145
Alfred P. Sloan FoundationUNSPECIFIED
Classification Code:PACS: 71.10.Hf, 71.10.Pm
Record Number:CaltechAUTHORS:20101215-090601625
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20101215-090601625
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:21372
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:15 Dec 2010 17:56
Last Modified:13 Dec 2016 01:18

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