講演情報
[8p-E207-7]Anisotropic Magneto-transport properties
in Te layer and Te/metal Bilayers
〇Arata Mitsuzuka1, Yuta Kobayashi1, Takuto Hiraoka1, Masashi Kawaguchi1, Masamitsu Hayashi1 (1.Univ. of Tokyo)
キーワード：
Tellurium、magnetotransport、anisotropy
Tellurium (Te) is a chiral material consisting of one-dimensional helical atomic chains and exhibits unusual transport, including nonreciprocal magnetoresistance and the nonlinear Hall effect. Although linearly polarized pulsed-laser irradiation can control the Te crystallographic orientation, magnetotransport in laser-oriented thin films remains unclear. We studied Te films and Te/metal bilayers fabricated by sputtering and molecular beam epitaxy. The Te crystal axis was aligned parallel or perpendicular to the current direction, and longitudinal resistance and Hall signals were measured under magnetic field and temperature. In Te/metal bilayers, large anisotropic magnetoresistance and planar Hall signals appeared, although the current should mainly flow through the metal layer. Their Te-orientation dependence indicates that Te and interfacial coupling strongly affect transport. We will compare Te single layers and Te/metal bilayers and discuss laser-condition dependence.