Generation of constant-amplitude radio-frequency sweeps at a tunnel junction for spin resonance STM

Journal Article · Fri Jul 15 00:00:00 EDT 2016 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4955446· OSTI ID:22597879

Paul, William; Lutz, Christopher P.; Heinrich, Andreas J. ^[1]; Baumann, Susanne ^[1]

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1. IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, California 95120 (United States)

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.

• OSTI ID: 22597879
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 7 Vol. 87; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AMPLITUDES
ELECTRIC FIELDS
ELECTRIC POTENTIAL
ELECTRON SPIN RESONANCE
GHZ RANGE 01-100
RADIOWAVE RADIATION
SCANNING TUNNELING MICROSCOPY
SPIN
TRANSFER FUNCTIONS
TUNNEL EFFECT
TUNNEL JUNCTIONS