A cryogenic Quadraprobe scanning tunneling microscope system with fabrication capability for nanotransport research

Journal Article · Mon Dec 10 00:00:00 EST 2007 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.2821610· OSTI ID:930966

Kim, Tae -Hwan ^[1]; Wang, Zhouhang ^[2]; Wendelken, John F. ^[3]; Li, Wenzhi ^[4]; Li, An -Ping ^[1]; Weitering, Hanno H. ^[3]

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1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
2. RHK Technology, Inc., Troy, MI (United States)
3. Univ. of Tennessee, Knoxville, TN (United States)
4. Florida International Univ., Miami, FL (United States)

We describe the development and the capabilities of a Quadraprobe system, consisting of a low temperature four-probe scanning tunneling microscope (STM) and a high resolution scanning electron microscope (SEM), coupled to a molecular-beam epitaxy sample preparation chamber. The four STM probes can be manipulated independently with sub-nanometer precision, enabling atomic resolution STM imaging and four-point electrical transport study of surface electronic systems and nanostructured materials at temperatures down to 10 K. In addition, the four scanning probes with automated motion controls allow for atom assembly to perform "bottom-up" fabrication of nanostructures. Some testing results are presented.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 930966
• Journal Information: Review of Scientific Instruments, Vol. 79, Issue 2; ISSN 0034-6748
• Publisher: American Institute of Physics (AIP)
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
74 ATOMIC AND MOLECULAR PHYSICS
STM
scanning tunneling microscopy
vacuum chambers
scanning electron microscopy
cryogenics
nanostructures
nanoscience
transport
MBE
quantum systems
spin electronic systems