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Title: Interlayer transport of nuclear spin polarization in ν = 2/3 quantum Hall states

We investigated the interlayer diffusion of nuclear spin polarization (NSP) by using the phase transition point of quantum Hall states at a Landau level filling factor of ν ν 2/3 in a double quantum well sample. When the NSP is current-pumped in one layer, the magnetoresistance in the other layer is enhanced after a delay of 150 s and the raising speed of this layer is lower than that of the pumped layer. The delay and lower value of the raising speed are explained by the diffusion of NSP.
Authors:
;  [1] ; ;  [2] ; ; ;  [3]
  1. Graduate School of Science, Kyoto University, Kyoto 606-8502 (Japan)
  2. Department of Physics, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501 (Japan)
  3. Research Center for Low Temperatures and Materials Sciences, Kyoto University, Kyoto 606-8501 (Japan)
Publication Date:
OSTI Identifier:
22261827
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1566; Journal Issue: 1; Conference: ICPS 2012: 31. international conference on the physics of semiconductors, Zurich (Switzerland), 29 Jul - 3 Aug 2012; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DIFFUSION; MAGNETORESISTANCE; PHASE TRANSFORMATIONS; QUANTUM WELLS; SPIN ORIENTATION