Critical behavior of nuclear-spin diffusion in GaAs/AlGaAs heterostructures near landau level filling v = 1

V. Bayot, E. Grivei, J. M. Beuken, S. Melinte, M. Shayegan

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

Thermal measurements on a GaAs/AlGaAs heterostructure reveal that the state of the confined two-dimensional electrons dramatically affects the nuclear-spin diffusion near Landau level filling factor \nu=1. The experiments provide quantitative evidence that the sharp peak in the temperature dependence of heat capacity near \nu=1 is due to an enhanced nuclear-spin diffusion from the GaAs quantum wells into the AlGaAs barriers. We discuss the physical origin of this enhancement in terms the possible Skyrme solid-liquid phase transition. 1997

Original languageEnglish (US)
Pages (from-to)1718-1721
Number of pages4
JournalPhysical review letters
Volume79
Issue number9
DOIs
StatePublished - Jan 1 1997

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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