Published November 12, 2010
| Published
Journal Article
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Insulating phases of electrons on a zigzag strip in the orbital magnetic field
- Creators
- Lai, Hsin-Hua
- Motrunich, Olexei I.
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.
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.Attached Files
Published - Lai2010p12101Phys_Rev_B.pdf
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Lai2010p12101Phys_Rev_B.pdf
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Additional details
- Eprint ID
- 21372
- Resolver ID
- CaltechAUTHORS:20101215-090601625
- DMR-0907145
- NSF
- Alfred P. Sloan Foundation
- Created
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2010-12-15Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field