Low-frequency spin fluctuations in Skyrmions confined by wires: Measurements of local nuclear spin relaxation

Takashi Kobayashi, Norio Kumada, Takeshi Ota, Satoshi Sasaki, Yoshiro Hirayama

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

We investigate low-frequency electron spin dynamics in a quantum Hall system with wire confinement by nuclear spin relaxation measurements. We developed a technique to measure the local nuclear spin relaxation rate T1-1. T1-1 is enhanced on both sides of the local filling factor νwire= 1, reflecting low-frequency fluctuations of electron spins associated with Skyrmions inside the wire. As the wire width is decreased, the fast nuclear spin relaxation is suppressed in a certain range of Skyrmion density. This suggests that the multi-Skyrmion state is modified and the low-frequency spin fluctuations are suppressed by the wire confinement.

Original languageEnglish
Article number126807
JournalPhysical Review Letters
Volume107
Issue number12
DOIs
Publication statusPublished - 2011 Sep 16

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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