• Letter

Multipolar Fermi-surface deformation in a Rydberg-dressed Fermi gas with long-range anisotropic interactions

Yijia Zhou, Rejish Nath, Haibin Wu, Igor Lesanovsky, and Weibin Li
Phys. Rev. A 104, L061302 – Published 20 December 2021
PDFHTMLExport Citation

Abstract

We study theoretically the deformation of the Fermi surface (FS) of a three-dimensional gas of Rydberg-dressed Li6 atoms. The laser dressing to high-lying Rydberg D states results in angle-dependent soft-core-shaped interactions whose anisotropy is described by multiple spherical harmonics. We show that this can drastically modify the shape of the FS and that its deformation depends on the interplay between the Fermi momentum kF and the reciprocal momentum k¯ corresponding to the characteristic soft-core radius of the dressing-induced potential. When kF<k¯, the dressed interaction stretches a spherical FS into an ellipsoid. When kFk¯, complex deformations are encountered which exhibit multipolar characteristics. We analyze the formation of Cooper pairs around the deformed FS and show that they occupy large orbital angular momentum states (p, f, and h wave) coherently. Our study demonstrates that Rydberg dressing to high angular momentum states may pave a route toward the investigation of unconventional Fermi gases and multiwave superconductivity.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 5 May 2021
  • Accepted 7 December 2021

DOI:https://doi.org/10.1103/PhysRevA.104.L061302

©2021 American Physical Society

Physics Subject Headings (PhySH)

General PhysicsAtomic, Molecular & Optical

Authors & Affiliations

Yijia Zhou1,2, Rejish Nath3, Haibin Wu4,5, Igor Lesanovsky1,6, and Weibin Li1

  • 1School of Physics and Astronomy and Centre for the Mathematics and Theoretical Physics of Quantum Non-equilibrium Systems, University of Nottingham, Nottingham NG7 2RD, United Kingdom
  • 2Graduate School of China Academy of Engineering Physics, Beijing 100193, China
  • 3Department of Physics, Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pune 411008, Maharashtra, India
  • 4State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China
  • 5Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
  • 6Institut für Theoretische Physik, University of Tübingen, 72076 Tübingen, Germany

Article Text (Subscription Required)

Click to Expand

Supplemental Material (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 104, Iss. 6 — December 2021

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review A

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×