Theory of Single Spin Detection with STM

被引：22

作者：

Balatsky, A. V. ^{[1
]}

Martin, I. ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA

来源：

QUANTUM INFORMATION PROCESSING | 2002年 / 1卷 / 05期

关键词：

Single spin; precession; STM; spin-orbit; coupling;

D O I：

10.1023/A:1023465729846

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We propose a mechanism for detection of a single spin center on a non-magnetic substrate. In the detection scheme, the STM tunnel current is correlated with the spin orientation. In the presence of magnetic field, the spin precesses and the tunnel current is modulated at the Larmor frequency. The mechanism relies on the effective spin-orbit interaction between the injected unpolarized STM current and the local spin center, which leads to the nodal structure of the spatial signal profile. Based on the proposed mechanism, the strongest spin-related signal can be expected for the systems with large spin-orbit coupling and low carrier concentration.

引用

页码：355 / 364

页数：10

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