Bibliographic Details
| Title: |
Resonant Hall effect under generation of a self-sustaining mode of spin current in nonmagnetic bipolar conductors with identical characters between holes and electrons. |
| Authors: |
Masamichi Sakai, Hiraku Takao, Tomoyoshi Matsunaga, Makoto Nishimagi, Keitaro Iizasa, Takahito Sakuraba, Koji Higuchi, Akira Kitajima, Shigehiko Hasegawa, Osamu Nakamura, Yuichiro Kurokawa, Hiroyuki Awano |
| Source: |
Japanese Journal of Applied Physics; Mar2018, Vol. 57 Issue 3, p1-1, 1p |
| Abstract: |
We have proposed an enhancement mechanism of the Hall effect, the signal of which is amplified due to the generation of a sustaining mode of spin current. Our analytic derivations of the Hall resistivity revealed the conditions indispensable for the observation of the effect: (i) the presence of the transverse component of an effective electric field due to spin splitting in chemical potential in addition to the longitudinal component; (ii) the simultaneous presence of holes and electrons each having approximately the same characteristics; (iii) spin-polarized current injection from magnetized electrodes; (iv) the boundary condition for the transverse current (Jc,y = 0). The model proposed in this study was experimentally verified by using van der Pauw-type Hall devices consisting of the nonmagnetic bipolar conductor YHx (x ≃ 2) and TbFeCo electrodes. Replacing Au electrodes with TbFeCo electrodes alters the Hall resistivity from the ordinary Hall effect to the anomalous Hall-like effect with an enhancement factor of approximately 50 at 4 T. We interpreted the enhancement phenomenon in terms of the present model. [ABSTRACT FROM AUTHOR] |
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| Database: |
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