Magneto-transport properties in fcc ytterbium

Yoshizumi, Toshihiro; Fujii, Daiki; Kitsunai, Satoru; Igarashi, Kousuke; Sakai, Masamichi; Nakamura, Osamu; Hasegawa, Shigehiko

doi:10.1016/j.physleta.2020.126661

Cited by 4 publications

(1 citation statement)

References 36 publications

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“…Systematic galvanomagnetic studies in the 1960s and 1970s showed that several elemental metals are CMs (i.e., Be, Mg, Zn, Cd, Ga, Tl, Sn, Pb, Bi, Sb, Mo, W, Re, Pd, and Pt) [22,23]. To date, YH 2 [24], GdH 2 [25], fcc Yb [26], and the parent states of iron pnictide and chalcogenide superconductors [27] have been found to be nearly CMs. Baber scattering accompanied by a spin flip is conceptually similar to the Bir-Aronov-Picus mechanism [28,29], which is described in terms of the electron-hole exchange interaction and plays a determining role in the spin relaxation of optically excited electrons in p-type III-V semiconductors.…”

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confidence: 99%

Spatiotemporal characteristics of spin transport in compensated metals with electron–hole exchange interaction

Sakai

Aktar

Yoshizumi

et al. 2021

J. Phys.: Condens. Matter

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We develop a theory describing spatiotemporal behavior of spin transport in two-band metals by postulating a spin–exchange interaction between electrons and holes. Starting with the semiclassical Boltzmann equation, we derive a system of coupled diffusion equations and solve them analytically under steady-state conditions. The solutions reveal two types of electron–hole coupled-spin transport modes: a dissipative mode and a nondissipative mode with an infinite spin diffusion length. The two modes are the manifestations of two types of spin coupling channels. Besides the exchange interaction, we incorporate into our derivation the relaxation caused by the spin–orbit interaction to show how it affects the spin transport characteristics of the two modes.

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