Nonequilibrium Spin Fluctuations in Nonmagnetic Single-Electron Transistors and Quantum Dots

被引:0
|
作者
J. Martinek
J. Barnaś
G. Schön
S. Takahashi
S. Maekawa
机构
[1] Universität Karlsruhe,Institut für Theoretische Festkörperphysik
[2] Tohoku University,Institute for Materials Research
[3] Polish Academy of Sciences,Institute of Molecular Physics
[4] Adam Mickiewicz University,Department of Physics
[5] Institut für Nanotechnologie,Forschungszentrum Karlsruhe
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关键词
spin fluctuations; SET; quantum dot; spin-flip relaxation;
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学科分类号
摘要
It is shown that nonequilibrium spin fluctuations significantly influence electronic transport in a single-electron transistor, when the spin relaxation on the island is slow. To describe spin fluctuations, the “orthodox” tunneling theory is generalized by taking into account the electron spin. It is shown that the transition between consecutive charge states can occur via high-spin states, which significantly modifies the shape of Coulomb steps and gives rise to additional resonances at low temperatures.
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页码:343 / 346
页数:3
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