Magnetoroton Softening in Rb Spinor Condensates with Dipolar Interactions | Zendy

R. W. Cherng | Zendy; Eugene Demler | Zendy

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Magnetoroton Softening in Rb Spinor Condensates with Dipolar Interactions

Author(s) -

R. W. Cherng,

Eugene Demler

Publication year - 2009

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.103.185301

Subject(s) - spinor , condensed matter physics , zeeman effect , physics , softening , superfluidity , dipole , larmor precession , magnetic field , anisotropy , quantum mechanics

Superfluids with a tendency towards periodic order have both phonon- and rotonlike spectra. We show that magnetoroton softening occurs in 87Rb spinor condensates. A rich variety of dynamical instabilities emerges as a function of the magnetic field orientation and strength of the quadratic Zeeman shift. These instabilities are driven by an effective dipolar interaction modified dramatically by quasi-two-dimensionality and rapid Larmor precession.

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