Electron transport in quantum wires with a magnetic quantum dot

被引：0
|
作者：
Sim, HS [1 ]
Chang, KJ
Kim, N
Ihm, G
机构：
[1] Korea Adv Inst Sci & Technol, Dept Phys, Taejon 305701, South Korea
[2] Chungnam Natl Univ, Dept Phys, Taejon 305764, South Korea
来源：
JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2001年 / 39卷 / 03期
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D O I：
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中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We develop a theoretical method of calculating conductances in two-dimensional electron systems, where inhomogeneous magnetic fields are applied, based on the lattice Hamiltonian and nonequilibrium Green's function. The method is used for a magnetic quantum dot, which is formed by locally nonuniform magnetic fields. The calculated two-terminal conductance shows that the magnetic quantum dot behaves as a transmission barrier and as a resonator when the magnetic field inside the dot is parallel to that outside it.
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页码：519 / 521
页数：3
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