Quantum Hall Spin Diode

Physical Review Letters
J P EisensteinK W West

Abstract

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.

References

Nov 15, 1992·Physical Review. B, Condensed Matter·J Hu, A H MacDonald
May 15, 1994·Physical Review. B, Condensed Matter·C M VarmaE Abrahams
Dec 28, 1992·Physical Review Letters·J P EisensteinK W West
Aug 2, 1993·Physical Review Letters·S HeB I Halperin
Apr 22, 1996·Physical Review Letters·M Kasner, A H MacDonald
Feb 5, 1996·Physical Review Letters·R HaussmannA H MacDonald
Oct 4, 2000·Physical Review Letters·S MelinteM Shayegan
Aug 11, 2005·Physical Review Letters·Irene DujovneK W West
Mar 16, 2007·Physical Review Letters·L A TracyK W West
Mar 5, 2009·Physical Review Letters·Y Q LiJ H Smet
Mar 10, 2012·Physical Review Letters·M SternI Bar-Joseph

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Citations

Oct 24, 2019·Advanced Materials·Shuhai LiuZhong Lin Wang
Jul 7, 2018·Physical Review Letters·Md Shafayat HossainM Shayegan
Jul 29, 2017·Physical Review Letters·Edward H Rezayi
Jun 20, 2021·Nature Communications·Sriram GuddalaAlexander B Khanikaev

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