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arXiv · 1801.02004

Large Tunneling Anisotropic Magnetoresistance mediated by Surface States

Marie Hervé·Timofey Balashov·Arthur Ernst·Wulf Wulfhekel
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Abstract

We investigated the tunneling anisotropic magnetoresistance (TAMR) in thick hcp Co films at cryogenic temperatures using scanning tunneling microscopy. At around -350 mV, a strong TAMR up to 30\% is found with a characteristic voltage dependence and a reversal of sign. With the help of \textit{ab initio} calculations the TAMR can be traced back to a spin-polarized occupied surface states that experience a strong spin-orbit interaction leading to a magnetization direction depending hybridization with bulk states.

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Marie Hervé, Timofey Balashov, Arthur Ernst, Wulf Wulfhekel. 2018-01-06. Large Tunneling Anisotropic Magnetoresistance mediated by Surface States. https://doi.org/10.1103/physrevb.97.220406

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