Valley susceptibility of an interacting two-dimensional electron system

O. Gunawan, Y. P. Shkolnikov, K. Vakili, T. Gokmen, E. P. De Poortere, M. Shayegan

Research output: Contribution to journalArticlepeer-review

173 Scopus citations

Abstract

We report direct measurements of the valley susceptibility, the change of valley population in response to an applied symmetry-breaking strain, in an AlAs two-dimensional electron system. As the two-dimensional density is reduced, the valley susceptibility dramatically increases relative to its band value, reflecting the system's strong electron-electron interaction. The increase has a remarkable resemblance to the enhancement of the spin susceptibility and establishes the analogy between the spin and valley degrees of freedom.

Original languageEnglish (US)
Article number186404
JournalPhysical review letters
Volume97
Issue number18
DOIs
StatePublished - 2006

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Valley susceptibility of an interacting two-dimensional electron system'. Together they form a unique fingerprint.

Cite this