Quantum Transport
We study the tunneling anisotropic magnetoresistance (TAMR) down to the atomic scale
which allows to resolve complex spin structures at surfaces
(Yoshida et al., PRB (2012)).
The TAMR can also be obtained at the single-atom level
(Neel et al., PRL (2013))
and in the contact regime the ballistic anisotropic magnetoresistance (BAMR) has been
observed (Schoeneberg et al., Nano Lett. (2016)).
Based on our quantum transport calculations we have also predicted the molecular anisotropic magnetoresistance (MAMR)
(Otte et al., PRB (2015)).
Recently, we have demonstrated that adatoms on a surface with a non-collinear spin structure
show intra-atomic non-collinear magnetism
(Haldar et al., PRB Rapid Comm. (2018)).
In collaboration with experimental colleagues from the University of Hamburg (group of Prof. R. Wiesendanger)
we have discovered the so-called non-collinear magnetoresistance which allows all-electrical read-out of
magnetic skyrmions (Hanneken et al., Nat. Nanotech. (2015),
see image, copyright Univ. of Hamburg) as well as domain walls
(Perini et al., PRL (2019)).
Press release of the CAU (2015): Simple detection of magnetic skyrmions
For more information you can take a look at the Publications,
and Press
Gallery Sections on this page. For further Information you can
contact Stefan Heinze.
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