| Transmission Modulated by QuantumGatein AharonovCasher Ring |
| |
| 作者姓名： | SHI Yao ming XU Shi Yue CHEN Hang de |
| |
| 作者单位： | SHI Yao ming XU Shi Yue CHEN Hang de (College of Sciences，Shanghai University) CHEN Hao (Department of Physics，Fudan University) |
| |
| 摘 要： | １ Ｉｎｔｒｏｄｕｃｔｉｏｎ Ｒｅｃｅｎｔｌｙ，ａｓｅｒｉｅｓｏｆｅｘｐｅｒｉｍｅｎｔｓｂｙＹａｃｏｂｙｅｔａｌ．［１］ａｎｄＢｕｋｓｅｔａｌ．［２］ｒｅｐｏｒｔｅｄｓｏｍｅｍｅａｓｕｒｅｍｅｎｔｓｏｆｅｌｅｃｔｒｏｎｔｒａｎｓｍｉｓｓｉｏｎｐｈａｓｅｉｎｒｅｓｏｎａｎｔｔｕｎｎｅｌｉｎｇｔｈｒｏｕｇｈａｑｕａｎｔｕｍｄｏｔ（ＱＤ）ｗｈｉｃｈｉｓｉｎｓｅｒｔｅｄｉｎｔｏｏｎｅａｒｍｏｆａｎＡｈａｒｏｎｏｖＢｏｈｍ（ＡＢ）ｒｉｎｇ．ＴｈｅｃｏｎｄｕｃｔａｎｃｅｔｈｒｏｕｇｈｔｈｅＡＢｒｉｎｇｗ…
|
| 收稿时间： | 13 April 1999 |
Transmission modulated by quantum gate in aharonov-casher ring |
| |
| SHI Yao,ming,XU Shi,Yue,CHEN Hang,de.Transmission modulated by quantum gate in aharonov-casher ring[J].Journal of Shanghai University(English Edition),1999,3(4):274-278. |
| |
| Authors: | Yao-ming Shi Shi-Yue Xu Hang-de Chen Hao Chen |
| |
| Institution: | 1. College of Sciences, Shanghai University
2. Department of Physics, Fudan University |
| |
| Abstract: | We study the electron transmission tuned by quantum gate in an Aharonov-Casher (AC) ring. Transmission probability is obtained
as a function of the normalized textured electric fields and Fermi energy. We find that modulating electron wavefunction in
the stub can drastically affects electron transmission through the ring system. As Fermi energy crosses every eigenenergy
of the isolated stub, the phases of both anomalous and periodic oscillations of the AC conductance generally have abrupt change
by π. On two sides of several special Fermi energies, both anomalous and periodic oscillations have no abrupt phase change
and are in phase. The detailed characteristics of the anomalous oscillations are dependent on the difference between the tilt
angle of the spin and that of textured electric field. By modulating external magnetic field applied to the stub, we present
AC oscillations of spin-polarized conductance within adiabatic limit.
Project supported by the Science Foundation of Shanghai Municipal Commission of Education (96AJ05) |
| |
| Keywords: | AC phase quantum gate spin polarized conductance |
| 本文献已被 CNKI 万方数据 SpringerLink 等数据库收录！ |
