Generation of constant-amplitude radio-frequency sweeps at a tunnel junction for spin resonance STM
Abstract
We describe the measurement and successful compensation of the radio-frequency transfer function of a scanning tunneling microscope over a wide frequency range (15.5–35.5 GHz) and with high dynamic range (>50 dB). The precise compensation of cabling resonances and attenuations is critical for the production of constant-voltage frequency sweeps for electric-field driven electron spin resonance (ESR) experiments. We also demonstrate that a well-calibrated tunnel junction voltage is necessary to avoid spurious ESR peaks that can arise due to a non-flat transfer function.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 01, 2016
- Source ID
- 10.1063/1.4955446
Entities
People
- Andreas J. Heinrich
- Christopher P Lutz
- Susanne Baumann
- W Paul Duprex
Organizations
- IBM Research
- Natural Sciences and Engineering Research Council
- Office of Naval Research
- University of Basel