Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance work on Wednesday 21st October 2020 from 07:00 AM to 07:00 PM (BST).

During this time our website performance may be temporarily affected. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 14, 2019
Previous Article Next Article

Surface-mediated spin dynamics probed by optical-pump–probe scanning tunneling microscopy

Author affiliations

Abstract

In current materials science and technologies, surface effects on carrier and spin dynamics in functional materials and devices are of great importance. In this paper, we present the surface-sensitive probing of electron spin dynamics, performed by optical-pump–probe scanning tunneling microscopy (OPP-STM). Time-resolved spin lifetime information on a manganese (Mn)-deposited GaAs(110) surface was successfully obtained for the first time. With increasing Mn density via in situ evaporation, a nonlinear change in the spin lifetime in the picosecond range was clearly observed, while directly confirming the Mn density by STM. In comparison with the results obtained by the conventional OPP method, we have also demonstrated that the observed nonlinear spin lifetime behavior was surface-mediated, which can be characterized using only the surface-sensitive OPP-STM technique.

Graphical abstract: Surface-mediated spin dynamics probed by optical-pump–probe scanning tunneling microscopy

Back to tab navigation

Supplementary files

Article information


Submitted
21 Dec 2018
Accepted
28 Jan 2019
First published
28 Jan 2019

Phys. Chem. Chem. Phys., 2019,21, 7256-7260
Article type
Communication

Surface-mediated spin dynamics probed by optical-pump–probe scanning tunneling microscopy

Z. Wang, C. Yoon, S. Yoshida, Y. Arashida, O. Takeuchi, Y. Ohno and H. Shigekawa, Phys. Chem. Chem. Phys., 2019, 21, 7256
DOI: 10.1039/C8CP07786J

Social activity

Search articles by author

Spotlight

Advertisements