Electron Spin Relaxation Due to Phonon Modulation of the Rashba Interaction in Quantum Dots

被引：1

作者：

Alcalde, Augusto M. ^{[1
]}

Sanz, Liliana ^{[1
]}

Romano, Carla ^{[2
]}

Marques, Gilmar E. ^{[3
]}

机构：

[1] Univ Fed Uberlandia, Inst Fis, BR-38400 Uberlandia, MG, Brazil

[2] Univ Buenos Aires, Dept Fis, Buenos Aires, DF, Argentina

[3] Univ Fed Sao Carlos, Dept Fis, BR-13560 Sao Carlos, SP, Brazil

来源：

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | 2010年 / 23卷 / 01期

关键词：

Quantum dots; Spin relaxation;

D O I：

10.1007/s10948-009-0552-z

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this work we calculate the spin-flip transition rates, considering the phonon modulation of the spin-orbit interaction. For this purpose will use the spin-phonon interaction Hamiltonian proposed by Pavlov and Firsov. We compare the contributions of the electron-phonon deformation potential (DP) and piezoelectric (PE) coupling to the spin relaxation. We reveal the importance of an appropriate description of the electron Land, g-factor in the calculation of the rates. Our results demonstrate that, for narrow-gap materials, the DP interaction becomes the dominant one. This behavior is not observed in wide or intermediate gap semiconductors, where the PE coupling, in general, governs the relaxation processes.

引用

页码：175 / 177

页数：3

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