Electrical magnetochiral effect induced by chiral spin fluctuations

T Yokouchi, N Kanazawa, A Kikkawa… - Nature …, 2017 - nature.com
Chirality of matter can produce unique responses in optics, electricity and magnetism. In
particular, magnetic crystals transmit their handedness to the magnetism via antisymmetric
exchange interaction of relativistic origin, producing helical spin orders as well as their
fluctuations. Here we report for a chiral magnet MnSi that chiral spin fluctuations manifest
themselves in the electrical magnetochiral effect, ie the nonreciprocal and nonlinear
response characterized by the electrical resistance depending on inner product of current …

Electrical magnetochiral effect induced by chiral spin fluctuations in MnSi

T Yokouchi, N Kanazawa, A Kikkawa… - APS March Meeting …, 2018 - ui.adsabs.harvard.edu
Chirality of matter can give rise to unique responses in optics, electricity and magnetism.
One such example is electrical magnetochiral effect (eMChE), which is directional nonlinear
magnetotransport in proportion to an inner-product of Bandj. Electrical magnetochiral effect
in magnetic materials has not been reported so far. We investigate eMChE in a prototype
chiral helimagnet of MnSi. Prominent electrical magnetochiral signals emerge at specific
temperature-magnetic field-pressure regions: in the paramagnetic phase just above the …
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