Cryogenic STM in 3D vector magnetic fields realized through a rotatable insert
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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.
Trainer , C W J , Yim , C M , McLaren , M & Wahl , P 2017 , ' Cryogenic STM in 3D vector magnetic fields realized through a rotatable insert ' Review of Scientific Instruments , vol 88 , no. 9 , 093705 . DOI: 10.1063/1.4995688
Review of Scientific Instruments
© 2017, the Author(s). This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at aip.scitation.org / http://dx.doi.org/10.1063/1.4995688
We acknowledge funding from EPSRC (EP/L505079/1 and EP/I031014/1).
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