2D magnetofermionic condensate in GaAs/AlGaAs heterostructures

L. V. Kulik, A. V. Gorbunov, A. S. Zhuravlev, V. B. Timofeev, I. V. Kukushkin

Research output: Contribution to journalArticlepeer-review

Abstract

A principally new collective state - magnetofer-mionic condensate - has been found at excitation of long-lived triplet cyclotron magnetoexcitons in Hall isolator with high electron mobility, filling factor ? = 2 and at low temperatures, ? < 1 ?. The condensed phase interacts coherently with external electromag-netic field, exhibiting super-emitting properties, and due to low viscosity spreading over macroscopic dis-tances from the excitation spot along the 2D structure surface. The discovered effects are explained in terms of coherent condensate appearing in a non-equilibrium system of 2D fermions with totally quantized energy spectrum where a degenerate ensemble of long-lived triplet magnetoexcitons with Bose statistics has been created. The condensate occurs in the space of vectors of magnetic translations, the landscape opening new opportunities for future physical investigations.

Original languageEnglish
Pages (from-to)1166-1173
Number of pages8
JournalFizika Nizkikh Temperatur
Volume43
Issue number8
Publication statusPublished - 1 Aug 2017

Keywords

  • 2D fermion system
  • 2D triplet cyclotron magnetoexcitons
  • Hall insulator
  • Magnetofermionic con-densate

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