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Journal Articles Physical Review Research Year : 2020

Observation of algebraic time order for two-dimensional dipolar excitons

Suzanne Dang
  • Function : Author
Marta Zamorano
  • Function : Author
Stephan Suffit
Kenneth West
  • Function : Author
Kirk Baldwin
  • Function : Author
Loren Pfeiffer
  • Function : Author
François Dubin
  • Function : Author

Abstract

Emergence of algebraic quasi-long-range order is a key feature of superfluid phase transitions at two dimensions. For this reduced dimensionality interactions prevent Bose-Einstein condensation with true long range order, at any finite temperature. Here, we report the occurence of algebraic order in a strongly interacting quantum liquid formed by dipolar excitons confined in a bilayer semiconductor heterostructure. We observe a transition from exponential to algebraic decay of the excitons temporal coherence, accompanied by a universal scaling behaviour of the equation of state. Our results provide strong evidence for a Berezinskii-Kosterlitz-Thouless (BKT) transition in a multi-component boson-like system governed by strong dipolar interactions.

Dates and versions

hal-02994361 , version 1 (07-11-2020)

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Cite

Markus Holzmann, Suzanne Dang, Marta Zamorano, Stephan Suffit, Kenneth West, et al.. Observation of algebraic time order for two-dimensional dipolar excitons. Physical Review Research, 2020, 2 (3), ⟨10.1103/PhysRevResearch.2.032013⟩. ⟨hal-02994361⟩

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