Observation of algebraic time order for two-dimensional dipolar excitons

Suzanne Dang, Marta Zamorano, Stephan Suffit, Kenneth West, Kirk Baldwin, Loren Pfeiffer, Markus Holzmann, François Dubin

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

We study dipolar excitons confined in a flat trap of a GaAs bilayer heterostructure. By quantifying density and density fluctuations at sub-Kelvin temperatures, we unveil the excitons' universal equation of state. This allows us to infer thermodynamically the critical phase-space density for the transition expected between normal and superfluid regimes. The region of this crossover is directly confirmed by a net change in the excitons' temporal coherence, from an exponential to an algebraic decay with an exponent compatible with the Berezinskii-Kosterlitz-Thouless theory.

Original languageEnglish (US)
Article number032013
JournalPhysical Review Research
Volume2
Issue number3
DOIs
StatePublished - Jul 2020
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

Fingerprint

Dive into the research topics of 'Observation of algebraic time order for two-dimensional dipolar excitons'. Together they form a unique fingerprint.

Cite this