Introduction to STM	Instrumentation	Results / Projects
Gallery	Publications	Team

Instrumentation

UHV-LT-STM

(Ultra High Vacuum Low Temperature STM)

Properties:

• Ultra high vacuum
• Low temperature down to 6 K
• Magnetic field, 6 T
• Contamination rate < 1 adsobate per 500x500nm per week
• Fe evaporator

Recently, we studied the III-V semiconductor InAs with and without single Fe adsorbates in magnetic fields from 0 till 6 T. Some results:

• Tip induced quantum dot
• Scattering states of ionized dopants
• Magnetic field induced localization
• Adsorbate induced 2 dimensional electron gas (2DEG) in comparison with UPS measurements

A new Ultra High Vacuum 300 mK STM is being built in lab 006.

Related Publications

A low-temperature ultrahigh-vacuum STM/STS-system with rotatable magnetic field Ch. Wittneven, R. Dombrowski, S.H. Pan, and R. Wiesendanger, Rev. Sci. Instr. 68 3806 (1997)    abstract (HTML)    full text (PDF)

Return to the instrumentation main page.

Introduction to STM | Instrumentation | Results / Projects | Gallery | Publications | Team

impressum   © copyright 2002 by group R - university of hamburg