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Cryogenic STM in 3D vector magnetic fields realized through a rotatable insert

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Author(s)

Christopher William James Trainer, Chi Ming Yim, Martin McLaren, Peter Wahl

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Abstract

Spin-polarized scanning tunneling microscopy (SP-STM) performed in vector magnetic fields promises atomic scale imaging of magnetic structure, providing complete information on the local spin texture of a sample in three dimensions. Here, we have designed and constructed a turntable system for a low temperature STM which in combination with a 2D vector magnet provides magnetic fields of up to 5 T in any direction relative to the tip-sample geometry. This enables STM imaging and spectroscopy to be performed at the same atomic-scale location and field-of-view on the sample, and most importantly, without experiencing any change on the tip apex before and after field switching. Combined with a ferromagnetic tip, this enables us to study the magnetization of complex magnetic orders in all three spatial directions.
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Original languageEnglish
Article number093705
Number of pages4
JournalReview of Scientific Instruments
Volume88
Issue number9
Early online date29 Sep 2017
DOIs
Publication statusPublished - Sep 2017

    Research areas

  • Spin-polarized scanning tunneling microscopy, Magnetism, Vector magnetic fields

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