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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Research Article| September 29 2017
Cryogenic STM in 3D vector magnetic fields realized through a rotatable insert
C. M. Yim ;
C. Trainer, C. M. Yim, M. McLaren, P. Wahl; Cryogenic STM in 3D vector magnetic fields realized through a rotatable insert. Rev. Sci. Instrum. 1 September 2017; 88 (9): 093705. https://doi.org/10.1063/1.4995688
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