Instrumentation

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  Instrumentation

  Our laboratory is equipped with a combined Low-Temperature Scanning Tunneling Microscope/Atomic Force Microscope (LT-STM/AFM) operating at liquid Helium (<5K) and liquid Nitrogen (<78K) temperatures and under ultra-high vacuum (UHV) conditions. The guidance of light into and out of the tip-sample junction is realized via two dedicated optical accesses to the microscope in combination with in-situ lenses attached close to the probe tip-sample junction. An additional optical access to the junction allows single-atom deposition onto the cold sample within the microscope. We have standard in-situ tip and sample preparation techniques that we continuously expand to our needs. We are equipped with an Acton Pro Spectrometer with a cooled CCD camera for analyzing the light emission from the junction and with different laser sources for light excitation of the junction.
  

  As a growing group we are developing novel instrumental setups tailored for our research objectives.

  
  

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  Lab Infrastructure

  Our renovated and modernized laboratory rooms in the basement of IG1 provide optimum conditions for our (SP-)STM/STS experiments, also in combination with our future optical setup.
  

  They feature low-noise high-precision air conditioning, sound-insulated doors, suspended ceilings, and sound-absorbing wall elements to reduce sound propagation. In addition, our laboratories provide pits with mechanically decoupled concrete foundations to place our STMs on it. Additional technical rooms for air conditioning units and noisy pumps, as well as measurement and control rooms directly adjacent to the STM laboratories complete our lab infrastructure.

  
  

Methods

• Scanning Tunneling Microscopy (STM)

• Scanning Tunneling Spectroscopy (STS)

• Resonant Tunneling

• Spin-polarized Scanning Tunneling Microscopy (SP-STM)

• Light-assisted STM/STS

• In-situ Molecular Beam Epitaxy (MBE)

Topics

• Coming soon...