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Title: Comparison of nuclear electric resonance and nuclear magnetic resonance in integer and fractional quantum Hall states

Electric-field-induced nuclear resonance (NER: nuclear electric resonance) involving quantum Hall states (QHSs) was studied at various filling factors by exploiting changes in nuclear spins polarized at quantum Hall breakdown. Distinct from the magnetic dipole interaction in nuclear magnetic resonance, the interaction of the electric-field gradient with the electric quadrupole moment plays the dominant role in the NER mechanism. The magnitude of the NER signal strongly depends on whether electronic states are localized or extended. This indicates that NER is sensitive to the screening capability of the electric field associated with QHSs.
Authors:
; ; ;  [1] ;  [1] ;  [2]
  1. Department of Physics, Tohoku University, Sendai 980-8578 (Japan)
  2. (Japan)
Publication Date:
OSTI Identifier:
22492321
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 5; Journal Issue: 8; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COMPARATIVE EVALUATIONS; ELECTRIC FIELDS; ELECTRIC RESONANCE; ELECTRONIC STRUCTURE; HALL EFFECT; MAGNETIC DIPOLES; NUCLEAR MAGNETIC RESONANCE; QUADRUPOLE MOMENTS; SPIN ORIENTATION