Karl-Heinz Ernst, Susanne Baumann, et al.
Nano Letters
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.
Karl-Heinz Ernst, Susanne Baumann, et al.
Nano Letters
William Paul, Kai Yang, et al.
Nature Physics
William Paul, David Oliver, et al.
Applied Surface Science
Kai Yang, William Paul, et al.
Physical Review Letters