Direct measurement of spin-flip rates of a self-assembled InAs double quantum dot in single-electron tunneling

被引：1

作者：

Dani, Olfa ^{[1
]}

Hussein, Robert ^{[2
]}

Bayer, Johannes C. ^{[1
]}

Pierz, Klaus ^{[3
]}

Kohler, Sigmund ^{[4
]}

Haug, Rolf J. ^{[1
]}

机构：

[1] Leibniz Univ Hannover, Inst Festkorperphys, D-30167 Hannover, Germany

[2] Friedrich Schiller Univ Jena, Inst Festkorpertheorie & opt, D-07743 Jena, Germany

[3] Phys Tech Bundesanstalt, Bundesallee 100, D-38116 Braunschweig, Germany

[4] Inst Ciencia Mat Madrid, CSIC, E-28049 Madrid, Spain

来源：

PHYSICAL REVIEW B | 2024年 / 109卷 / 12期

关键词：

RELAXATION; DYNAMICS;

D O I：

10.1103/PhysRevB.109.L121404

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Spin flips are one of the limiting factors for spin-based information processing. We demonstrate a transport approach for determining the spin-flip rates of a self-assembled InAs double quantum dot occupied by a single electron. In such devices, different Land & eacute; factors lead to an inhomogeneous Zeeman splitting, so that the two spin channels can never be at resonance simultaneously, leading to a spin blockade at low temperatures. This blockade is analyzed in terms of spin flips for different temperatures and magnetic fields. Our results are in good agreement with a quantum master equation that combines the dot-lead couplings with ohmic dissipation stemming from spin-flip cotunneling.

引用

页数：6

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