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Thermally driven pure spin current through an interacting quantum dot ×÷Õß:Zhao, H (Zhao, Hua)[ 1,2,3,4 ] ; Zhang, XW (Zhang, Xiaowei)[ 1 ] ; Liu, XC (Liu, Xiaochun)[ 1 ] ; Yang, ZQ (Yang, Zhongqin)[ 2,3,4,5 ] PHYSICS LETTERS A ¾í: 384 ÆÚ: 24 ÎÄÏ׺Å: 126607 DOI: 10.1016/j.physleta.2020.126607 ³ö°æÄê: APR 28 2020 ÎÄÏ×ÀàÐÍ:Article ²é¿´ÆÚ¿¯Ó°ÏìÁ¦ ÕªÒª We study spin-dependent electron transport properties of a thermally driven interacting quantum dot. When an external magnetic field is applied to the quantum dot, the effective transmissions of spin-up and spin-down electrons are separated from each other and have a perfect mirror symmetry with respect to the incident energy at a certain gate voltage. A pure spin current can be induced in the system and modulated by a magnetic field. Under certain magnetic field strengths, a larger pure spin current can be obtained at gate voltages with the values in a range, not just at a specific voltage. These results indicate that the system can be worked as a pure spin current generator. (C) 2020 Elsevier B.V. All rights reserved. ¹Ø¼ü´Ê ×÷Õ߹ؼü´Ê:Quantum dot; Spin current; Magnetic field ×÷ÕßÐÅÏ¢ ͨѶ×÷ÕßµØÖ·: Fudan University Fudan Univ, State Key Lab Surface Phys, Shanghai 200433, Peoples R China. Fudan University Fudan Univ, Key Lab Computat Phys Sci MOE, Shanghai 200433, Peoples R China. Fudan University Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China. ͨѶ×÷ÕßµØÖ·: Yang, ZQ (corresponding author) ÏÔʾ¸ü¶à Fudan Univ, State Key Lab Surface Phys, Shanghai 200433, Peoples R China. ͨѶ×÷ÕßµØÖ·: Yang, ZQ (corresponding author) ÏÔʾ¸ü¶à Fudan Univ, Key Lab Computat Phys Sci MOE, Shanghai 200433, Peoples R China. ͨѶ×÷ÕßµØÖ·: Yang, ZQ (corresponding author) ÏÔʾ¸ü¶à Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China. µØÖ·: [ 1 ] Qiannan Normal Univ Nationalities, Sch Phys & Elect, Duyun 558000, Guizhou, Peoples R China ÏÔʾ¸ü¶à [ 2 ] Fudan Univ, State Key Lab Surface Phys, Shanghai 200433, Peoples R China ÏÔʾ¸ü¶à [ 3 ] Fudan Univ, Key Lab Computat Phys Sci MOE, Shanghai 200433, Peoples R China ÏÔʾ¸ü¶à [ 4 ] Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China [ 5 ] Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China µç×ÓÓʼþµØÖ·:zyang@fudan.edu.cn »ù½ð×ÊÖúÖÂл »ù½ð×ÊÖú»ú¹¹ ÊÚȨºÅ Foundation of Scientific Innovative Research Team of Education Department of Guizhou Province QNYSKYTD2018002 Science and Technology Foundation of Guizhou Province LKQS[2013]16 ²é¿´»ù½ð×ÊÖúÐÅÏ¢ ³ö°æÉÌ ELSEVIER, RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS Àà±ð / ·ÖÀà Ñо¿·½Ïò hysicsWeb of Science Àà±ð hysics, MultidisciplinaryÎÄÏ×ÐÅÏ¢ ÓïÑÔ:English Èë²ØºÅ: WOS:000540268600026 ISSN: 0375-9601 eISSN: 1873-2429 ÆäËûÐÅÏ¢ IDS ºÅ: LY1FT Web of Science ºËÐĺϼ¯ÖÐµÄ "ÒýÓõIJο¼ÎÄÏ×": 23 Web of Science ºËÐĺϼ¯ÖÐµÄ "±»ÒýƵ´Î": 0 |
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