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Quantum Hall Spin Diode

Eisenstein, J. P. and Pfeiffer, L. N. and West, K. W. (2017) Quantum Hall Spin Diode. Physical Review Letters, 118 (18). Art. No. 186801. ISSN 0031-9007. doi:10.1103/PhysRevLett.118.186801.

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Double layer two-dimensional electron systems at high perpendicular magnetic field are used to realize magnetic tunnel junctions in which the electrons at the Fermi level in the two layers have either parallel or antiparallel spin magnetizations. In the antiparallel case the tunnel junction, at low temperatures, behaves as a nearly ideal spin diode. At elevated temperatures the diode character degrades as long-wavelength spin waves are thermally excited. These tunnel junctions provide a demonstration that the spin polarization of the electrons in the N=1 Landau level at filling factors ν=5/2 and 7/2 is essentially complete, and, with the aid of an in-plane magnetic field component, that Landau level mixing at these filling factors is weak in the samples studied.

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Additional Information:© 2017 American Physical Society. Received 18 January 2017; published 4 May 2017. It is a pleasure to acknowledge helpful discussions with P. A. Lee, A. H. MacDonald, G. Refael, S. Das Sarma, and A. Stern. This work was supported in part by the Institute for Quantum Information and Matter, a 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 No. GBMF 4420, and by the National Science Foundation MRSEC Grant No. 1420541.
Group:Institute for Quantum Information and Matter
Funding AgencyGrant Number
Institute for Quantum Information and Matter (IQIM)UNSPECIFIED
NSF Physics Frontiers CenterUNSPECIFIED
Gordon and Betty Moore FoundationGBMF1250
Gordon and Betty Moore FoundationGBMF4420
Issue or Number:18
Record Number:CaltechAUTHORS:20170505-110632677
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:77221
Deposited By: Tony Diaz
Deposited On:05 May 2017 19:24
Last Modified:15 Nov 2021 17:29

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