A System for the Study of Magnetic Materials and Magnetic Imaging with the STM

Published

January 1, 1991

Author(s)

P First, Joseph A. Stroscio, Daniel T. Pierce, Robert A. Dragoset, Robert Celotta

Abstract

A report of work in progress to determine the feasibility of imaging the magnetization of ferromagnetic samples with the scanning tunneling microscope (STM) is presented. A vacuum system was designed to test several different proposals as well as to prepare and characterize thin films of magnetic materials by conventional means, including STM. This was begun with an attempt to detect spatially resolved spin-polarization of secondary electrons emitted from the sample when operating the STM in the scanning field emission mode. Results are currently inconclusive, but encouraging. A weak spin-polarization signal has been observed corresponding to one of the in-plane components of magnetization. However, topographic feedthrough has not been fully eliminated as a possible spurious source of contrast.

Citation

Journal of Vacuum Science and Technology B

Volume

9

Issue

2

Pub Type

Journals

Citation

First, P. , Stroscio, J. , Pierce, D. , Dragoset, R. and Celotta, R. (1991), A System for the Study of Magnetic Materials and Magnetic Imaging with the STM, Journal of Vacuum Science and Technology B (Accessed April 18, 2024)