Low temperature Scanning Probe Microscopy is well known to be a key to enhanced spectroscopic details due to reduced thermal broadening of the local density of states. Beside the inherent advantages of reduced surface mobility and minimised thermal drift, the combination with high magnetic fields gives access to various challenging fields of application.
With its ultra-compact design, the Cryogenic STM features optimal intrinsic stability for operation even under delicate measurement conditions. The exclusive use of non-magnetic materials allows for the operation at virtually any magnetic field. Coarse positioning at low temperatures, UHV compatibility, and in-situ sample and sensor exchange are further advantages, natural for an Omicron STM. Even more flexibility is given by up to three electrical contacts at the sensor carrier as well as four electrical contacts at the sample plate for simultaneous transport measurements or application of dedicated potential configurations during the STM measurement.
The Cryogenic STM is available as integral part of a complete system solution in the MULTIPROBE Cryogenic UHV System as well as head-only version.
The STM head is suitable for self-integration into existing or dedicated systems. Depending on the cryostat configuration, it is capable for operation down to the 3He temperature range as well as higher magnetic field and special field configurations.
Fields of Applications:
Investigation of the Local Density of States (LDOS) by tunneling spectroscopy
Vibrational spectroscopy (inelastic, IETS)
Magnetisum & Magnetic structures: domain size, domain reorganisation, field dependence of domains
Superconductivity: vortices, vortex pinning, vortex pattern
Technical Data:
Scan range: 6.5µm x 6.5µm @ RT / 1.2µm x 1.2µm @ 4.2K
2D Coarse positioning: Z: 6mm / X: 4mm
Z-stability: < 0,05 Å (rms) (depending on system configuration)
Head dimensions: Ø 46mm; l=110mm
System integration: MULTIPROBE Cryogenic UHV system
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