Anomalous tunneling of spin wave in polar state of spin-1 BEC

Shohei Watabe; Yusuke Kato; Yoji Ohashi

doi:10.1088/1742-6596/400/1/012079

Anomalous tunneling of spin wave in polar state of spin-1 BEC

Shohei Watabe, Yusuke Kato, Yoji Ohashi

Research output: Contribution to journal › Conference article › peer-review

2 Citations (Scopus)

Abstract

We investigate tunneling properties of collective spin-wave excitations in the polar state of a spin-1 spinor Bose-Einstein condensate. Within the mean-field theory at T = 0, we show that when the condensate is in the critical supercurrent state, the spin wave mode exhibits perfect transmission through a nonmagnetic potential barrier in the low energy limit, unless the strength of a spin-independent interaction c_o equals that of a spin-dependent interaction c_o Such an anomalous tunneling behavior is absent in the case of a magnetic barrier. We also clarify a scaling law of the transmission probability as a function of the mode energy.

Original language	English
Article number	012079
Journal	Journal of Physics: Conference Series
Volume	400
Issue number	PART 1
DOIs	https://doi.org/10.1088/1742-6596/400/1/012079
Publication status	Published - 2012
Externally published	Yes
Event	26th International Conference on Low Temperature Physics, LT 2011 - Beijing, China Duration: 2011 Aug 10 → 2011 Aug 17

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1088/1742-6596/400/1/012079

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title = "Anomalous tunneling of spin wave in polar state of spin-1 BEC",

abstract = "We investigate tunneling properties of collective spin-wave excitations in the polar state of a spin-1 spinor Bose-Einstein condensate. Within the mean-field theory at T = 0, we show that when the condensate is in the critical supercurrent state, the spin wave mode exhibits perfect transmission through a nonmagnetic potential barrier in the low energy limit, unless the strength of a spin-independent interaction co equals that of a spin-dependent interaction co Such an anomalous tunneling behavior is absent in the case of a magnetic barrier. We also clarify a scaling law of the transmission probability as a function of the mode energy.",

author = "Shohei Watabe and Yusuke Kato and Yoji Ohashi",

year = "2012",

doi = "10.1088/1742-6596/400/1/012079",

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journal = "Journal of Physics: Conference Series",

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T1 - Anomalous tunneling of spin wave in polar state of spin-1 BEC

AU - Watabe, Shohei

AU - Kato, Yusuke

AU - Ohashi, Yoji

PY - 2012

Y1 - 2012

N2 - We investigate tunneling properties of collective spin-wave excitations in the polar state of a spin-1 spinor Bose-Einstein condensate. Within the mean-field theory at T = 0, we show that when the condensate is in the critical supercurrent state, the spin wave mode exhibits perfect transmission through a nonmagnetic potential barrier in the low energy limit, unless the strength of a spin-independent interaction co equals that of a spin-dependent interaction co Such an anomalous tunneling behavior is absent in the case of a magnetic barrier. We also clarify a scaling law of the transmission probability as a function of the mode energy.

AB - We investigate tunneling properties of collective spin-wave excitations in the polar state of a spin-1 spinor Bose-Einstein condensate. Within the mean-field theory at T = 0, we show that when the condensate is in the critical supercurrent state, the spin wave mode exhibits perfect transmission through a nonmagnetic potential barrier in the low energy limit, unless the strength of a spin-independent interaction co equals that of a spin-dependent interaction co Such an anomalous tunneling behavior is absent in the case of a magnetic barrier. We also clarify a scaling law of the transmission probability as a function of the mode energy.

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SN - 1742-6588

VL - 400

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

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M1 - 012079

T2 - 26th International Conference on Low Temperature Physics, LT 2011

Y2 - 10 August 2011 through 17 August 2011

ER -

Anomalous tunneling of spin wave in polar state of spin-1 BEC

Abstract

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