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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/30844完整後設資料紀錄
| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 張慶瑞(Ching-Ray Chang) | |
| dc.contributor.author | Po-Hao Chang | en |
| dc.contributor.author | 張博豪 | zh_TW |
| dc.date.accessioned | 2021-06-13T02:17:53Z | - |
| dc.date.available | 2009-03-20 | |
| dc.date.copyright | 2007-03-20 | |
| dc.date.issued | 2007 | |
| dc.date.submitted | 2007-01-31 | |
| dc.identifier.citation | [1] J. C. Slonczewski Phys. Rev. B 39, 6995(1989)
[2] Jun Yang, Jun Wang, Z. M. Zheng, D. Y. Xing, and C. R. Chang, Phys. Rev. B 73, 014432(2006) [3] S. Datta, Electronic Transport in Mesoscopic Systems Cambridge Uni- versity Press, Cambridge, U.K., 1995 . [4] http://www.utdallas.edu/~frensley/technical/qtrans/node6.html#eqnj1d[5] S. Datta, Electronic Transport in Mesoscopic Systems Cambridge University Press, Cambridge, U.K., 1995 [6] http://www.utdallas.edu/ frensley/technical/qtrans/node6. html#eqnj1d [7] Sakurai, Modern Quantum Mechanics [8] Eugen Merzbacher, Quantum Mechanics [9] Phys. Rev. B 52, 411 [10] P. Bruno, J. Magn. Magn. Mater 121, 248 (1993) | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/30844 | - |
| dc.description.abstract | 我們討論了磁性雜質的大小跟磁矩的方向對多層結構中穿透係數的影響。其中介紹了transfer-matrtix的方法，並且針對我們處理的結構所需引入了自旋座標轉換和機率流衰減因子來修改原始的transfer-matrix公式。 | zh_TW |
| dc.description.abstract | We discuss the e¤ects of the size, magnitude and orientation of magnetic
moment of magnetic impurities. To discuss the transport in quantum well aspect, the systematic method which named transfer-matrix formalism is needed for solving the transmission and refection probability. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-13T02:17:53Z (GMT). No. of bitstreams: 1 ntu-96-R93222062-1.pdf: 606834 bytes, checksum: 8210962a8c28d5eeac17cbc693892e44 (MD5) Previous issue date: 2007 | en |
| dc.description.tableofcontents | 1 Motivation 9
2 theoretical calculation 11 2.1 Hamiltonian . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.1.1 ferromaget region . . . . . . . . . . . . . . . . . . . . . 12 2.2 wave functions and eigenenergies . . . . . . . . . . . . . . . . 13 2.3 The transfer-matrix formalism . . . . . . . . . . . . . . . . . . 15 2.3.1 Single F/M case . . . . . . . . . . . . . . . . . . . . . . 15 2.3.2 Generalized into N layers case . . . . . . . . . . . . . . 18 2.4 The modi…cation of the transfer-matrix formalism . . . . . . . 20 2.4.1 The spinor transformation?? . . . . . . . . . . . . . . . 20 2.4.2 The defusive case . . . . . . . . . . . . . . . . . . . . . 22 2.5 The Landuer formula . . . . . . . . . . . . . . . . . . . . . . . 25 3 Numerical Results and Discussions 27 3.1 Analyze the properties of transmission probability . . . . . . . 27 3.1.1 T vs L . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 3.1.2 Transmission probability versus particle energy . . . . 36 4 Conclusion 45 A The derivation of some formula 47 A.1 Solve the eigenvalue problems for the ferromagnetic region . . 47 | |
| dc.language.iso | en | |
| dc.subject | 量子位能井 | zh_TW |
| dc.subject | 穿透係數 | zh_TW |
| dc.subject | 磁性雜質 | zh_TW |
| dc.title | 磁性雜質對多層結構的影響 | zh_TW |
| dc.title | Effect of loossen spins on the Transmission
coefficient of multilayers | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 95-1 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 楊志信(Jyh-Shinn Yang),陳政維 | |
| dc.subject.keyword | 穿透係數,磁性雜質,量子位能井, | zh_TW |
| dc.subject.keyword | transmission coefficient,transfer-matrix,quantum well, | en |
| dc.relation.page | 49 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2007-02-02 | |
| dc.contributor.author-college | 理學院 | zh_TW |
| dc.contributor.author-dept | 物理研究所 | zh_TW |
| 顯示於系所單位： | 物理學系 | |
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