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arXiv · 1603.03487

Magnetotransport study of the pressure-induced antiferromagnetic phase in FeSe

Taichi Terashima·Naoki Kikugawa·Shigeru Kasahara·Tatsuya Watashige·Yuji Matsuda·Takasada Shibauchi·Shinya Uji
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Abstract

The resistivity $ρ$ and Hall resistivity $ρ_H$ are measured on FeSe at pressures up to $P$ = 28.3 kbar in magnetic fields up to $B$ = 14.5 T. The $ρ(B)$ and $ρ_H(B)$ curves are analyzed with multicarrier models to estimate the carrier density and mobility as a function of $P$ and temperature ($ T\leqslant$ 110 K). It is shown that the pressure-induced antiferromagnetic transition is accompanied by an abrupt reduction of the carrier density and scattering. This indicates that the electronic structure is reconstructed significantly by the antiferromagnetic order.

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Taichi Terashima, Naoki Kikugawa, Shigeru Kasahara, Tatsuya Watashige, Yuji Matsuda, Takasada Shibauchi, Shinya Uji. 2016-05-13. Magnetotransport study of the pressure-induced antiferromagnetic phase in FeSe. https://doi.org/10.1103/physrevb.93.180503

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