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Corrections to the magnetoresistance formula for semimetals with Dirac electrons: the Boltzmann equation approach validated by the Kubo formula
https://uec.repo.nii.ac.jp/records/9341
https://uec.repo.nii.ac.jp/records/9341aebc32c3-e9aa-4ad4-8181-a3affbce1356
名前 / ファイル | ライセンス | アクション |
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Bi_MR_v13 (1.7 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2019-09-19 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Corrections to the magnetoresistance formula for semimetals with Dirac electrons: the Boltzmann equation approach validated by the Kubo formula | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題 | magnetoresistance | |||||
キーワード | ||||||
言語 | en | |||||
主題 | Dirac electrons | |||||
キーワード | ||||||
言語 | en | |||||
主題 | Weyl fermions | |||||
キーワード | ||||||
言語 | en | |||||
主題 | Boltzmann equation | |||||
キーワード | ||||||
言語 | en | |||||
主題 | Kubo formula | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Owada, Mitsuaki
× Owada, Mitsuaki× Awashima, Yudai× Fuseya, Yuki |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The magnetoresistance (MR) in semimetals with Dirac (or Weyl) electrons and free holes is investigated on the basis of the Boltzmann theory. The MR is modified from the conventional results with free electrons and holes in a very complex way due to the correction of the Dirac dispersion. The obtained formula explicitly includes the magnetic field dependence, which is very useful for the analysis of experimental results. In order to verify the validity of our results, the results obtained by the Boltzmann approach are compared with those by the Kubo theory. It is revealed that, by taking into account the field dependence of carrier density, the MR obtained by the Boltzmann theory almost perfectly agrees with that based on the Kubo theory even in the high-field region (in the quantum limit) except for the quantum oscillations. It is also shown that the MR in semimetals increases linearly with respect to the field in the quantum limit due to the drastic change of the carrier density, which is a significant characteristic of semimetals. | |||||
書誌情報 |
en : Journal of Physics: Condensed Matter 巻 30, 号 44, p. 445601, 発行日 2018-11 |
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出版者 | ||||||
出版者 | IOP Publishing | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0953-8984 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1088/1361-648X/aae03c | |||||
権利 | ||||||
権利情報 | © 2018 IOP Publishing Ltd. | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1088/1361-648X/aae03c | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa |