Drag Force and Superfluidity in the Supersolid Stripe Phase of a Spin-Orbit-Coupled Bose-Einstein Condensate

doi:10.1134/S1063776118110146

	Drag Force and Superfluidity in the Supersolid Stripe Phase of a Spin-Orbit-Coupled Bose-Einstein Condensate
	Shlyapnikov, G. V.1,2,3,4,5,6; Martone, G. I.6
刊名	JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS
	2018-11-01
卷号	127 期号:5 页码:865-876
ISSN号	1063-7761
DOI	10.1134/S1063776118110146
英文摘要	The phase diagram of a spin-orbit-coupled two-component Bose gas includes a supersolid stripe phase, which is featuring density modulations along the direction of the spin-orbit coupling. This phase has been recently found experimentally [31]. In the present work, we characterize the superfluid behavior of the stripe phase by calculating the drag force acting on a moving impurity. Because of the gapless band structure of the excitation spectrum, the Landau critical velocity vanishes if the motion is not strictly parallel to the stripes, and energy dissipation takes place at any speed. Moreover, due to the spin-orbit coupling, the drag force can develop a component perpendicular to the velocity of the impurity. Finally, by estimating the time over which the energy dissipation occurs, we find that for slow impurities, the effects of friction are negligible on a time scale up to several seconds, which is comparable with the duration of a typical experiment.
资助项目	European Research Council under European Community[341197]
WOS研究方向	Physics
语种	英语
出版者	PLEIADES PUBLISHING INC
WOS记录号	WOS:000456583300008
资助机构	European Research Council under European Community ; European Research Council under European Community ; European Research Council under European Community ; European Research Council under European Community ; European Research Council under European Community ; European Research Council under European Community ; European Research Council under European Community ; European Research Council under European Community
内容类型	期刊论文
源URL	[http://ir.wipm.ac.cn/handle/112942/14189]
专题	中国科学院武汉物理与数学研究所
通讯作者	Martone, G. I.
作者单位	1.Natl Univ Sci & Technol MISIS, Russian Quantum Ctr, Moscow 119049, Russia 2.Chinese Acad Sci, Wuhan Inst Phys & Math, Wuhan 430071, Hubei, Peoples R China 3.Univ Amsterdam, Inst Phys, Van der Waals Zeeman Inst, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands 4.Univ Paris Saclay, CEA Saclay, CNRS, SPEC,CEA, F-91191 Gif Sur Yvette, France 5.Russian Quantum Ctr, Moscow 143025, Russia 6.Univ Paris Saclay, Univ Paris Sud, CNRS, LPTMS, F-91405 Orsay, France
推荐引用方式 GB/T 7714	Shlyapnikov, G. V.,Martone, G. I.. Drag Force and Superfluidity in the Supersolid Stripe Phase of a Spin-Orbit-Coupled Bose-Einstein Condensate[J]. JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS,2018,127(5):865-876.
APA	Shlyapnikov, G. V.,&Martone, G. I..(2018).Drag Force and Superfluidity in the Supersolid Stripe Phase of a Spin-Orbit-Coupled Bose-Einstein Condensate.JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS,127(5),865-876.
MLA	Shlyapnikov, G. V.,et al."Drag Force and Superfluidity in the Supersolid Stripe Phase of a Spin-Orbit-Coupled Bose-Einstein Condensate".JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS 127.5(2018):865-876.