Nanotech 2003 Vol. 3
Nanotech 2003 Vol. 3
Technical Proceedings of the 2003 Nanotechnology Conference and Trade Show, Volume 3

Nano Particles and Molecules Chapter 2

Noise Spectroscopy of a Single Spin with Spin Polarized STM

Authors: Z. Nussinov, M. Crommie and A.V. Balatsky

Affilation: Los Alamos National Laboratory, United States

Pages: 78 - 81

Keywords: STM, single spin, Larmor precession, tunneling

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.

ISBN: 0-9728422-2-5
Pages: 560