Spin degree of freedom in the ν = 1 bilayer electron system investigated by nuclear spin relaxation

N. Kumada, K. Muraki, K. Hashimoto, Y. Hirayama

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52 Citations (Scopus)

Abstract

The nuclear-spin-relaxation rate 1/T1 has been measured in a bilayer electron system at and around total Landau level filling factor ν = 1. The measured 1/T1, which probes electron spin fluctuations, is found to increase gradually from the quantum Hall (QH) state at low fields through a phase transition to the compressible state at high fields. Furthermore, 1/T1 in the QH state shows a noticeable increase away from ν = 1. These results demonstrate that, as opposed to common assumption, the electron spin degree of freedom is not completely frozen either in the QH or the compressible states.

Original languageEnglish
Article number096802
JournalPhysical review letters
Volume94
Issue number9
DOIs
Publication statusPublished - 2005 Mar 11
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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