Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2012-01-17
Physics
Condensed Matter
Strongly Correlated Electrons
5 pages, 4 figures
Scientific paper
Resistively detected nuclear magnetic resonance is used to measure the Knight shift of the As 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.
Bar-Joseph Israel
Maude Duncan K.
Piot B. A.
Plochocka Paulina
Stern Marcela
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