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Title: Phase transitions in quantum Hall multiple layer systems

Polarized photoluminescence from multiple well electron systems was studied in the regime of the integer quantum Hall effect. Two quantum Hall ferromagnetic ground states assigned to the uncorrelated miniband quantum Hall state and to the spontaneous interwell phase coherent dimer quantum Hall state were observed. The photoluminescence associated with these states exhibits features caused by finite-size skyrmions. The depolarization of the ferromagnetic ground state was observed in bilayer system.
Authors:
;  [1] ;  [2] ; ;  [3]
  1. Instituto de Fisica de São Carlos, Universidade de São Paulo, 13560-970 São Carlos, SP (Brazil)
  2. National High Magnetic Field Laboratory, Tallahassee, FL 32312 (United States)
  3. Institute of Semiconductor Physics, Novosibirsk 630090 (Russian Federation)
Publication Date:
OSTI Identifier:
22261823
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; DEPOLARIZATION; GROUND STATES; HALL EFFECT; LAYERS; PHASE TRANSFORMATIONS; PHOTOLUMINESCENCE; SKYRME POTENTIAL; SOLITONS