NMR probing of the spin polarization of the ν=5/2 quantum hall state

M. Stern, B. A. Piot, Y. Vardi, V. Umansky, P. Plochocka, D. K. Maude, I. Bar-Joseph

Research output: Contribution to journalArticlepeer-review

Abstract

Resistively detected nuclear magnetic resonance is used to measure the Knight shift of the As75 nuclei and determine the electron spin polarization of the fractional quantum Hall states of the second Landau level. We show that the 5/2 state is fully polarized within experimental error, thus confirming a fundamental assumption of the Moore-Read theory. We measure the electron heating under radio frequency excitation and show that we are able to detect NMR at electron temperatures down to 30 mK.

Original languageEnglish
Article number066810
Pages (from-to)1-5
Number of pages5
JournalPhysical Review Letters
Volume108
Issue number6
DOIs
StatePublished - 10 Feb 2012

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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