Preparation of Fe STM tips for room-temperature spin-polarized tunneling spectroscopy
arXiv:2406.15220
Abstract
We present a recipe based on field-directed Ar ion etching of iron tips that results in probes suitable for stable spin-polarized scanning tunneling spectroscopy. This is illustrated by a measurement of the spectroscopic mapping of the magnetization of Co islands on Cu(111).
The results are described only in a qualitative manner and no quantification is provided to support the drawn conclusions. The results are based on a very limited number of STM tips, which makes the significance of the claims questionable