Random flips of electric field in microwave-induced states with spontaneously broken symmetry

S. I. Dorozhkin, V. Umansky, L. N. Pfeiffer, K. W. West, K. Baldwin, K. Von Klitzing, J. H. Smet

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

In a two-dimensional electron system subject to microwaves and a magnetic field, photovoltages emerge. They can be separated into two components originating from built-in electric fields and electric field domains arising from spontaneous symmetry breaking. The latter occurs in the zero resistance regime only and manifests itself in pulsed behavior, synchronous across the sample. The pulses show sign reversal. This implies a flip of the field in each domain, consistent with the existence of two equally probable electric field domain configurations due to the spontaneous symmetry breaking.

Original languageEnglish (US)
Article number176808
JournalPhysical review letters
Volume114
Issue number17
DOIs
StatePublished - May 1 2015
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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