Ultrahigh vacuum, variable temperature, dual scanning tunneling microscope system operating under high magnetic field

Weiwei Cai; Fei Pang; Jian Wang; Hui Liu; X J Liang; Q K Xue; D M Chen

doi:10.1063/1.2746821

Ultrahigh vacuum, variable temperature, dual scanning tunneling microscope system operating under high magnetic field

Rev Sci Instrum. 2007 Jun;78(6):065108. doi: 10.1063/1.2746821.

Authors

Weiwei Cai¹, Fei Pang, Jian Wang, Hui Liu, X J Liang, Q K Xue, D M Chen

Affiliation

¹ Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Zhongguancun South Street No. 8, Haidian, Beijing 100080, China.

PMID: 17614639
DOI: 10.1063/1.2746821

Abstract

We present a dual scanning tunneling microscope (DSTM) system operating between 2.2 K and room temperature, in a split-coil superconducting magnetic field up to 12 T and in ultrahigh vacuum. The DSTM consists of two compact STMs, each having x, y, and z coarse positioning piezoelectric steppers with embedded capacitive positioning sensor for navigation. Each STM can be operated independently and can achieve atomic resolution. The DSTM and the sample is configured in a way that allows the magnetic field orientation to be varied continuously from normal to parallel to the sample surface. Together with the sample, the DSTM can form a nanometer scale three terminal setup for transport measurement.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Equipment Design
Equipment Failure Analysis
Image Enhancement / instrumentation*
Image Enhancement / methods
Imaging, Three-Dimensional / instrumentation*
Imaging, Three-Dimensional / methods
Magnetics / instrumentation*
Microscopy, Scanning Tunneling / instrumentation*
Microscopy, Scanning Tunneling / methods
Reproducibility of Results
Sensitivity and Specificity
Temperature
Vacuum