Two Kinds of Cylindrical Fermi Surface Determined by de Haas-van Alphen Experiments in NpCoGa5
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- Aoki Dai
- Institute for Materials Research, Tohoku University
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- Homma Yoshiya
- Institute for Materials Research, Tohoku University
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- Shiokawa Yoshinobu
- Institute for Materials Research, Tohoku University Advanced Science Research Center, Japan Atomic Energy Research Institute
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- Yamamoto Etsuji
- Advanced Science Research Center, Japan Atomic Energy Research Institute
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- Nakamura Akio
- Advanced Science Research Center, Japan Atomic Energy Research Institute
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- Haga Yoshinori
- Advanced Science Research Center, Japan Atomic Energy Research Institute
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- Settai Rikio
- Graduate School of Science, Osaka University
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- Onuki Yoshichika
- Advanced Science Research Center, Japan Atomic Energy Research Institute Graduate School of Science, Osaka University
Bibliographic Information
- Other Title
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- Two Kinds of Cylindrical Fermi Surface Determined by de Haas–van Alphen Experiments in NpCoGa<sub>5</sub>
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Abstract
We succeeded in observing de Haas–van Alphen (dHvA) oscillations in an antiferromagnet NpCoGa5 with a tetragonal structure. The dHvA signal was significantly enhanced at higher fields than the metamagnetic transition field Hm (=43 kOe for H||[001]), where the antiferromagnetic state is changed into the field-induced ferromagnetic (paramagnetic) state. In the paramagnetic state, the Fermi surface was found to consist of two kinds of cylindrical main Fermi surface and small pocket Fermi surfaces. The cyclotron masses of the main Fermi surfaces were considerably large, ranging from 6 to 12m0. This is the first case where the Fermi surface was determined experimentally in transuranium compounds.
Journal
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 73 (10), 2608-2611, 2004
THE PHYSICAL SOCIETY OF JAPAN
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Details 詳細情報について
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- CRID
- 1390001204188503296
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- NII Article ID
- 210000105052
- 110001979174
- 130004538565
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- NII Book ID
- AA00704814
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- BIBCODE
- 2004JPSJ...73.2608A
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- ISSN
- 13474073
- 00319015
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- NDL BIB ID
- 7120768
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed