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

Journal Article · Wed Dec 04 00:00:00 EST 2013 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4848401· OSTI ID:22261827

Tsuda, S.; Nguyen, M. H. ^[1]; Terasawa, D.; Fukuda, A. ^[2]; Zheng, Y. D.; Arai, T.; Sawada, A. ^[3]

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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)

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.

• OSTI ID: 22261827
• Journal Information: AIP Conference Proceedings, Vol. 1566, 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); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
DIFFUSION
MAGNETORESISTANCE
PHASE TRANSFORMATIONS
QUANTUM WELLS
SPIN ORIENTATION