Timofeev, I;
Juggins, R;
Szymańska, MH;
(2023)
Geometric and fluctuational divergences in the linear response of coherently driven microcavity polaritons and their relation to superfluidity.
Physical Review B
, 108
(21)
, Article 214513. 10.1103/PhysRevB.108.214513.
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Abstract
We consider the possibility of superfluid behavior in a coherently driven, dissipative microcavity polariton system in gapless spectrum regimes. Previous work demonstrated the absence of such behavior for gapped spectra via a linear response analysis. The system can, however, be tuned to possess a gapless spectrum in special cases, leaving open the possibility of superfluid behavior. Here we show the absence of superfluidity in all regimes; we find a divergent linear response in the system's gapless regimes, which may be linked to phase-transition behavior. This indicates that the gapless spectrum is related to phase instability and not superfluid-enabling massless modes.
| Type: | Article |
|---|---|
| Title: | Geometric and fluctuational divergences in the linear response of coherently driven microcavity polaritons and their relation to superfluidity |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevB.108.214513 |
| Publisher version: | https://doi.org/10.1103/PhysRevB.108.214513 |
| Language: | English |
| Additional information: | Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0/). Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10184872 |
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