| Aharonov-Casher Oscillasions of Transmission Through a Mesoscopic Ring with a Magnetic Impurity |
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| 作者姓名： | 曹秀凤 宋小龙 汪源 施耀铭 |
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| 作者单位： | DepartmentofPhysics,CollegeofSciences,ShanghaiUniversity,Shanghai200436,P.R.China |
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| 摘 要： | Aharonov-Casher oscillasions of transmission through a mesoscopic ring with a magnetic impurity is investigated. Both spindependent transmission and reflection coefficients of spin-state electrons at zero-temperature are calculated as a function of the textured electric fields and its title angle in the present of spin-flipper scattering. It is found that the spin-exchange interaction can destroy intermittently periodic oscillations of spin-up transmission and reflection coefficients within some small ranges in the adiabatic region of quantum phase. However spin-down transmission and reflection coefficients appear periodic AC oscillations. The calculated results manifest that spindown transmission and reflection coefficients have the same perfect oscillation patterns. In the nonadiabatic region, the behavior of the anomalous AC oscillations are depedent on the difference between the tilt angle of spin and that of texture electric field.
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| 关 键 词： | Aharonov-Casher振荡 中型环 磁性杂质 电场 旋转鳍状散射 量子论 |
| 收稿时间： | 19 February 2003 |
Aharonov-casher oscillasions of transmission through a mesoscopic ring with a magnetic impurity |
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| Cao?Xiu-feng,Song?Xiao-long,Wang?Yuan,Shi?Yao-ming.Aharonov-Casher Oscillasions of Transmission Through a Mesoscopic Ring with a Magnetic Impurity[J].Journal of Shanghai University(English Edition),2004,8(1):38-42. |
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| Authors: | Cao Xiu-feng Song Xiao-long Wang Yuan Shi Yao-ming |
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| Institution: | (1) Department of Physics, College of Sciences, Shanghai University, 200436 Shanghai, P.R. China |
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| Abstract: | Aharonov-Casher oscillasions of transmission through a mesoscopic ring with a magnetic impurity is investigated. Both spin-dependent transmission and reflection coefficients of spin-state electrons at zero-temperature are calculated as a function of the textured electric fields and its title angle in the present of spin-flipper scattering. It is found that the spin-exchange interaction can destroy intermittently periodic oscillations of spin-up transmission and reflection coefficients within some small ranges in the adiabatic region of quantum phase. However spin-down transmission and reflection coefficients appear periodic AC oscillations. The calculated results manifest that spindown transmission and reflection coefficients have the same perfect oscillation patterns. In the nonadiabatic region, the behavior of the anomalous AC oscillations are depedent on the difference between the tilt angle of spin and that of texture electric field. |
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| Keywords: | mesoscopic AC ring magnetic impurity spin-flipped transmission |
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