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Competing interactions and anisotropic magnetoresistance in layered CeTe2

https://hiroshima.repo.nii.ac.jp/records/2008186
https://hiroshima.repo.nii.ac.jp/records/2008186
6ffe3f82-4353-4d8a-84f4-372f078fb163
名前 / ファイル ライセンス アクション
PhysRevB_62_11609.pdf PhysRevB_62_11609.pdf (120.9 KB)
Item type デフォルトアイテムタイプ_(フル)(1)
公開日 2023-03-18
タイトル
タイトル Competing interactions and anisotropic magnetoresistance in layered CeTe2
言語 en
作成者 Jung, Myoung Hwa

× Jung, Myoung Hwa

en Jung, Myoung Hwa

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Umeo, Kazunori

× Umeo, Kazunori

en Umeo, Kazunori

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Fujita, Toshizo

× Fujita, Toshizo

en Fujita, Toshizo

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Takabatake, Toshiro

× Takabatake, Toshiro

en Takabatake, Toshiro

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アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利情報
権利情報 Copyright (c) 2000 The American Physical Society.
内容記述
内容記述 On a single crystal of CeTe2 with a layered tetragonal structure, we have studied the effect of magnetic field on magnetic susceptibility M/B, specific heat C, and electrical resistivity ρ. It is confirmed that this compound orders antiferromagnetically at TN=4.4 K, while ρ(T) shows no anomaly at TN but a sharp peak at Tρ=6.1 K. Below Tρ, M/B rises suddenly for B∥c, the easy magnetization axis, suggesting the onset of a short-range ferromagnetic order. At 2 K, M(B∥c) shows a metamagnetic transition at a small field of 0.06 T from the antiferromagnetic ground state to a field-induced ferromagnetic state. The peak in C(T) shifts from 4.3 K in zero field to 4.0 K in B∥C=0.1 T, and furthermore a shoulder appears at 4.3 K. With increasing magnetic field, the shoulder changes to a broadened maximum, which shifts towards higher temperatures. These observations indicate that the ferromagnetic interaction competes with the antiferromagnetic one even in zero field. A large negative magnetoresistance, MR=[ρ(B)-ρ(0)]/ρ(0), was observed in the vicinity of Tρ. For I∥c, the MR amounts to -25% at 3 T for B∥c, which is twice that for B⊥c. The large MR for I∥B∥c is a result of the increase of the c-axis conduction in the field-induced ferromagnetic alignment of Ce spins. However, the MR for I⊥c is essentially the same for B∥c and B⊥c, suggesting the confinement of carriers within the Te sheet sandwiched by the ferromagnetically coupled CeTe layers.
言語 en
出版者
出版者 American Physical Society
言語
言語 eng
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
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
関連情報
識別子タイプ DOI
関連識別子 10.1103/PhysRevB.62.11609
関連情報
識別子タイプ DOI
関連識別子 http://dx.doi.org/10.1103/PhysRevB.57.5025
収録物識別子
収録物識別子タイプ ISSN
収録物識別子 1098-0121
収録物識別子
収録物識別子タイプ NCID
収録物識別子 AA11187113
開始ページ
開始ページ 11 609
書誌情報 Physical Review B - Condensed Matter and Materials Physics
Physical Review B - Condensed Matter and Materials Physics

巻 62, 号 17, p. 11 609-11 613, 発行日 2000-11-01
旧ID 19286
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