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Piezomagnetic switching of the anomalous Hall effect in an antiferromagnet at room temperature

Cornell Affiliated Author(s)
M. Ikhlas
S. Dasgupta
F. Theuss
T. Higo
S. Kittaka
B.J. Ramshaw
O. Tchernyshyov
C.W. Hicks
S. Nakatsuji

Piezomagnetism couples strain linearly to magnetic order, implying that it can produce and control magnetization. However, unlike magnetostriction, which couples magnetization quadratically to strain, it enables bidirectional control of a net magnetic moment. If this effect becomes large at room temperature, it may be technologically relevant, similar to its electric analogue, piezoelectricity. However, current studies of the piezomagnetic effect have been primarily restricted to antiferromagnetic insulators at cryogenic temperatures.

Nature Physics
Date Published