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Title: Topological Defects and the Superfluid Transition of the s=1 Spinor Condensate in Two Dimensions

Abstract

The s=1 spinor Bose condensate at zero temperature supports ferromagnetic and polar phases that combine magnetic and superfluid ordering. We analyze the topological defects of the polar condensate, correcting previous studies, and show that the polar condensate in two dimensions is unstable at any finite temperature; instead, there is a nematic or paired superfluid phase with algebraic order in exp(2i{theta}), where {theta} is the superfluid phase, and no magnetic order. The Kosterlitz-Thouless transition out of this phase is driven by unbinding of half-vortices (the spin-disordered version of the combined spin and phase defects found by Zhou), and the anomalous universal 8T{sub c}/{pi} stiffness jump at the transition is confirmed in numerical simulations. The anomalous stiffness jump is a clear experimental signature of this phase and the corresponding phase transition.

Authors:
;  [1];  [1]
  1. Department of Physics, University of California, Berkeley, California 94720 (United States)
Publication Date:
OSTI Identifier:
20860840
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 97; Journal Issue: 12; Other Information: DOI: 10.1103/PhysRevLett.97.120406; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CONDENSATES; PHASE TRANSFORMATIONS; SIMULATION; SPIN; SUPERFLUIDITY; TOPOLOGY; VORTICES

Citation Formats

Mukerjee, Subroto, Moore, J E, Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, and Cenke, Xu. Topological Defects and the Superfluid Transition of the s=1 Spinor Condensate in Two Dimensions. United States: N. p., 2006. Web. doi:10.1103/PHYSREVLETT.97.120406.
Mukerjee, Subroto, Moore, J E, Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, & Cenke, Xu. Topological Defects and the Superfluid Transition of the s=1 Spinor Condensate in Two Dimensions. United States. https://doi.org/10.1103/PHYSREVLETT.97.120406
Mukerjee, Subroto, Moore, J E, Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, and Cenke, Xu. Fri . "Topological Defects and the Superfluid Transition of the s=1 Spinor Condensate in Two Dimensions". United States. https://doi.org/10.1103/PHYSREVLETT.97.120406.
@article{osti_20860840,
title = {Topological Defects and the Superfluid Transition of the s=1 Spinor Condensate in Two Dimensions},
author = {Mukerjee, Subroto and Moore, J E and Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 and Cenke, Xu},
abstractNote = {The s=1 spinor Bose condensate at zero temperature supports ferromagnetic and polar phases that combine magnetic and superfluid ordering. We analyze the topological defects of the polar condensate, correcting previous studies, and show that the polar condensate in two dimensions is unstable at any finite temperature; instead, there is a nematic or paired superfluid phase with algebraic order in exp(2i{theta}), where {theta} is the superfluid phase, and no magnetic order. The Kosterlitz-Thouless transition out of this phase is driven by unbinding of half-vortices (the spin-disordered version of the combined spin and phase defects found by Zhou), and the anomalous universal 8T{sub c}/{pi} stiffness jump at the transition is confirmed in numerical simulations. The anomalous stiffness jump is a clear experimental signature of this phase and the corresponding phase transition.},
doi = {10.1103/PHYSREVLETT.97.120406},
url = {https://www.osti.gov/biblio/20860840}, journal = {Physical Review Letters},
issn = {0031-9007},
number = 12,
volume = 97,
place = {United States},
year = {2006},
month = {9}
}