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Fermionic order by disorder in a van der Waals antiferromagnet
- 資料種別:
- 論文(リポジトリ)
- 責任表示:
- Okuma, R. ; Ueta, D. ; Kuniyoshi, S. ; Fujisawa, Y. ; Smith, B. ; Hsu, C. H. ; Inagaki, Y. ; Si, W. ; Kawae, T. ; Lin, H. ; Chuang, F. C. ; Masuda, T. ; Kobayashi, R. ; Okada, Y.
- 言語:
- 英語
- 出版情報:
- Springer Nature, 2020-09-16
- 著者名:
Okuma, R. Ueta, D. Kuniyoshi, S. Fujisawa, Y. Smith, B. Hsu, C. H. Inagaki, Y. Si, W. Kawae, T. Lin, H. Chuang, F. C. Masuda, T. Kobayashi, R. Okada, Y. - 掲載情報:
- Scientific Reports
- ISSN:
- 2045-2322
- 巻:
- 10
- バージョン:
- VoR
- 概要:
- CeTe_3 is a unique platform to investigate the itinerant magnetism in a van der Waals (vdW) coupled metal. Despite chemical pressure being a promising route to boost quantum fluctuation in this system, a systematic study on the chemical pre
…
ssure effect on Ce^<3+>(4f^1) states is absent. Here, we report on the successful growth of a series of Se doped single crystals of CeTe_3. We found a fluctuation driven exotic magnetic rotation from the usual easy-axis ordering to an unusual hard-axis ordering. Unlike in localized magnetic systems, near-critical magnetism can increase itinerancy hand-in-hand with enhancing fluctuation of magnetism. Thus, seemingly unstable hard-axis ordering emerges through kinetic energy gain, with the self-consistent observation of enhanced magnetic fluctuation (disorder). As far as we recognize, this order-by-disorder process in fermionic system is observed for the first time within vdW materials. Our finding opens a unique experimental platform for direct visualization of the rich quasiparticle Fermi surface deformation associated with the Fermionic order-by-disorder process. Also, the search for emergent exotic phases by further tuning of quantum fluctuation is suggested as a promising future challenge.
論文 続きを見る - URL:
- http://hdl.handle.net/20.500.12000/47032