Spin texture and magnetoroton excitations at ν=1/3

Javier G. Groshaus, Irene Dujovne, Yann Gallais, Cyrus F. Hirjibehedin, Aron Pinczuk, Yan Wen Tan, Horst Stormer, Brian S. Dennis, Loren N. Pfeiffer, Ken W. West

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


Neutral spin texture (ST) excitations at ν=1/3 are directly observed for the first time by resonant inelastic light scattering. They are determined to involve two simultaneous spin flips. At low magnetic fields, the ST energy is below that of the magnetoroton minimum. With increasing in-plane magnetic field these mode energies cross at a critical ratio of the Zeeman and Coulomb energies of ηc=0.020±0.001. Surprisingly, the intensity of the ST mode grows with temperature in the range in which the magnetoroton modes collapse. The temperature dependence is interpreted in terms of a competition between coexisting phases supporting different excitations. We consider the role of the ST excitations in activated transport at ν=1/3.

Original languageEnglish (US)
Article number046804
JournalPhysical review letters
Issue number4
StatePublished - Jan 30 2008
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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