首页|Chiral phonon activated spin Seebeck effect in chiral materials

Chiral phonon activated spin Seebeck effect in chiral materials

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Efficient generation of spin polarization is very important for spintronics and quantum computation.In chiral materials without magnetic order nor spin-orbit coupling,we find a new spin selectivity effect-chiral phonon activated spin Seebeck(CPASS)effect.Starting with the nonequilibrium distribution of chiral phonons under a temperature gradient,the CPASS coefficients are computed based on the Boltzmann transport theory.With both the phonon-drag and band transport contributions,the spin accumulations generated by the CPASS effect exhibit quadratic dependence on the temperature gradient.The strength of the CPASS effect and the relative magnitude of both contributions are tunable by the chemical potential modulation.The CPASS effect,which gives a promising explanation on the traditional chiral-induced spin selectivity effect,provides opportunities for the exploration of advanced spintronic devices based on chiral materials even in the absence of any magnetic order and spin-orbit coupling.

spin Seebeck effectchiral phononphonon-drag contributionefficient spin generation

Xiao Li、Jinxin Zhong、Jinluo Cheng、Hao Chen、Huiqian Wang、Jun Liu、Dali Sun、Lifa Zhang、Jun Zhou

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Phonon Engineering Research Center of Jiangsu Province,Center for Quantum Transport and Thermal Energy Science,School of Physics and Technology,Nanjing Normal University,Nanjing 210023,China

Center for Phononics and Thermal Energy Science,China-EU Joint Lab for Nanophononics,School of Physics Science and Engineering,Tongji University,Shanghai 200092,China

Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Science,Changchun 130033,China

Department of Mechanical and Aerospace Engineering,North Carolina State University,Raleigh NC 27606,USA

Organic and Carbon Electronics Laboratories(ORaCEL),North Carolina State University,Raleigh NC 27606,USA

Department of Physics,North Carolina State University,Raleigh NC 27695,USA

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国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金Jiangsu Specially-Appointed Professor ProgramNational Key Research and Development Project from Ministry of Science and Technology of Chinathe"Shuangchuang"Doctor Program of Jiangsu Province

123740441190417311890703122751332022YFA1203100JSS-CBS20210341

2024

10.1007/s11433-023-2281-x

中国科学:物理学 力学 天文学(英文版)
中国科学院

中国科学:物理学 力学 天文学(英文版)

CSTPCD
影响因子：0.91
ISSN：1674-7348
年,卷(期)：2024.67(3)
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