Design and performance of an ultrahigh vacuum spectroscopic-imaging scanning tunneling microscope with a hybrid vibration isolation system
arXiv:2311.10451 · doi:10.1063/5.0189100
Abstract
A spectroscopic imaging-scanning tunneling microscope (SI-STM) allows the atomic scale visualization of surface electronic and magnetic structure of novel quantum materials with high energy resolution. To achieve the optimal performance, low vibration facility is required. Here, we describe the design and the performance of an ultrahigh vacuum STM system supported by a hybrid vibration isolation system that consists of a pneumatic passive and a piezoelectric active vibration isolation stages. The STM system is equipped with a 1K pot cryogenic insert and a 9 Tesla superconducting magnet, capable of continuous SI-STM measurements for 7 days. A field ion microscopy system is installed for in situ STM tip treatment. We present the detailed vibrational noise analysis of the hybrid vibration isolation system and demonstrate the performance of our STM system by taking high resolution spectroscopic maps and topographic images on several quantum materials. Our results establish a new strategy to achieve an effective vibration isolation system for high-resolution STM and other scanning probe microscopy to investigate the nanoscale quantum phenomena.
References in corpus (7)
- Topological Surface States Protected From Backscattering by Chiral Spin Texture
- Scanning Tunneling Spectroscopy and Vortex Imaging in the Iron-Pnictide Superconductor BaFeCoAs
- Atomic-scale visualization of quasiparticle interference on a type-II Weyl semimetal surface
- A modular ultra-high vacuum millikelvin scanning tunneling microscope
- Development of a Scanning Tunneling Microscope for Variable Temperature Electron Spin Resonance
- Atomic-scale imaging of emergent order at a magnetic-field-induced Lifshitz transition
- Versatile Variable Temperature and Magnetic Field Scanning Probe Microscope for Advanced Material Research