Eisenstein, J. P. and Khaire, T. and Nandi, D. and Finck, A. D. K. and Pfeiffer, L. N. and West, K. W. (2016) Spin and the Coulomb gap in the half-filled lowest Landau level. Physical Review B, 94 (12). Art. No. 125409. ISSN 2469-9950. doi:10.1103/PhysRevB.94.125409. https://resolver.caltech.edu/CaltechAUTHORS:20160908-103416522
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Abstract
The Coulomb gap observed in tunneling between parallel two-dimensional electron systems, each at half-filling of the lowest Landau level, is found to depend sensitively on the presence of an in-plane magnetic field. Especially at low electron density, the width of the Coulomb gap at first increases sharply with in-plane field, but then abruptly levels off. This behavior appears to coincide with the known transition from partial to complete spin polarization of the half-filled lowest Landau level. The tunneling gap therefore opens a window onto the spin configuration of two-dimensional electron systems at high magnetic field.
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| Additional Information: | © 2016 American Physical Society. Received 21 July 2016; published 8 September 2016. It is a pleasure to acknowledge helpful discussions with H. R. Krishnamurthy, P. A. Lee, A. H. MacDonald, and especially S. H. Simon and A. Stern. This work was supported in part by the Institute for Quantum Information and Matter, an NSF Physics Frontiers Center with support of the Gordon and Betty Moore Foundation through Grant No. GBMF1250. The work at Princeton University was funded by the Gordon and Betty Moore Foundation through Grant GBMF4420, and by the National Science Foundation MRSEC Grant 1420541. | ||||||||||||
| Group: | Institute for Quantum Information and Matter | ||||||||||||
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| Issue or Number: | 12 | ||||||||||||
| DOI: | 10.1103/PhysRevB.94.125409 | ||||||||||||
| Record Number: | CaltechAUTHORS:20160908-103416522 | ||||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20160908-103416522 | ||||||||||||
| Official Citation: | Spin and the Coulomb gap in the half-filled lowest Landau level J. P. Eisenstein, T. Khaire, D. Nandi, A. D. K. Finck, L. N. Pfeiffer, and K. W. West Phys. Rev. B 94, 125409 (2016 | ||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||
| ID Code: | 70206 | ||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||
| Deposited By: | Ruth Sustaita | ||||||||||||
| Deposited On: | 08 Sep 2016 18:20 | ||||||||||||
| Last Modified: | 11 Nov 2021 04:25 |
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