Universal power law decay of spin polarization in double quantum dot

Mantsevich V. N.; Smirnov D. S.

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Universal power law decay of spin polarization in double quantum dot

机译：双量子点中自旋极化的通用幂律衰减

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We study the spin dynamics and spin noise in a double quantum dot, taking into account the interplay between hopping, exchange interaction, and the hyperfine interaction. At short timescales the spin relaxation is governed by the spin dephasing in the random nuclear fields. At long timescales the spin polarization obeys universal power law 1/t independent of the relation between all the parameters of the system. This effect is caused by the competition between the spin blockade effect and the hyperfine interaction. The spin noise spectrum of the system universally diverges as ln(1/omega) at low frequencies.

机译：考虑到跳跃，交换相互作用和超精细相互作用之间的相互作用，我们研究了双量子点中的自旋动力学和自旋噪声。在短时间尺度上，自旋弛豫由随机核场中的自旋移相控制。在长时间范围内，自旋极化遵守1 / t的通用幂定律，而与系统所有参数之间的关系无关。此效应是由自旋封锁效应与超精细相互作用之间的竞争引起的。该系统的自旋噪声谱在低频普遍发散为ln（1 / omega）。

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《Physical review》 |2019年第7期|075409.1-075409.10|共10页
作者
Mantsevich V. N.; Smirnov D. S.;
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Lomonosov Moscow State Univ Fac Phys Chair Semicond & Cryoelect Moscow 119991 Russia|Lomonosov Moscow State Univ Fac Phys Quantum Technol Ctr Moscow 119991 Russia;

Ioffe Inst St Petersburg 194021 Russia;

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1. Universal power law decay of spin polarization in double quantum dot [J] . Mantsevich V. N., Smirnov D. S. Physical review, B . 2019,第7期

机译：双量子点中自旋极化的通用电力法衰减
2. Quantum interference and sharp spin polarization on a double quantum dot: Role of the Rashba spin-orbit interaction [J] . Kuo-Wei Chen, Yu-Hsin Su, Son-Hsien Chen, Physical review . 2013,第3期

机译：双量子点上的量子干涉和尖锐的自旋极化：Rashba自旋轨道相互作用的作用
3. Influence of inter-dot coupling on spin polarization of carriers in double quantum dots [J] . S Lee, S-R Eric Yang, M Dobrowolska, Semiconductor science and technology . 2004,第9期

机译：点间耦合对双量子点中载流子自旋极化的影响
4. Power-law time decay of the quantum dot photoluminescence intensity [C] . K. Kral, M. Mensik International Conference on Phonon Scattering in Condensed Matter . 2014

机译：量子点光致发光强度的幂律时间衰减
5. Spin Polarization and Dynamics of DMS Colloidal Quantum Dots [D] . Delikanli, Savas 2011

机译：DMS胶体量子点的自旋极化和动力学
6. Study on spin and optical polarization in a coupled InGaN/GaN quantum well and quantum dots structure [O] . Jiadong Yu, Lai Wang, Di Yang, -1

机译：InGaN / GaN量子阱和量子点结构耦合中的自旋和光偏振研究
7. Universal power law decay of spin polarization in double quantum dot [O] . V. N. Mantsevich, D. S. Smirnov 2019

机译：双量子点中自旋极化的通用电力法衰减

Universal power law decay of spin polarization in double quantum dot

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