Anisotropic suppression of the energy gap in CeNiSn by high magnetic fields

T. Takabatake; M. Nagasawa; H. Fujii; G. Kido; M. Nohara; S. Nishigori; T. Suzuki; T. Fujita; R. Helfrich; U. Ahlheim; K. Fraas; C. Geibel; F. Steglich

doi:10.1103/PhysRevB.45.5740

Anisotropic suppression of the energy gap in CeNiSn by high magnetic fields

T. Takabatake, M. Nagasawa, H. Fujii, G. Kido, M. Nohara, S. Nishigori, T. Suzuki, T. Fujita, R. Helfrich, U. Ahlheim, K. Fraas, C. Geibel, F. Steglich

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72 Citations (Scopus)

Abstract

The formation of the pseudogap in CeNiSn has been investigated by means of resistivity and specific-heat measurements in high magnetic fields. When the field is raised from 0 to 12 T along the orthorhombic a axis, the semiconductorlike behavior in the resistivity below 6 K disappears and the linear electronic term in the specific heat increases from 57 to 100 mJ/K2 mol. However, no significant effect was observed for fields along the b and c axes up to 15 T. These results suggest an anisotropic suppression of the pseudogap, which can be interpreted as a result of strong spin polarization of the renormalized narrow band.

Original language	English
Pages (from-to)	5740-5743
Number of pages	4
Journal	Physical Review B
Volume	45
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevB.45.5740
Publication status	Published - Jan 1 1992
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics

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Takabatake, T., Nagasawa, M., Fujii, H., Kido, G., Nohara, M., Nishigori, S., Suzuki, T., Fujita, T., Helfrich, R., Ahlheim, U., Fraas, K., Geibel, C., & Steglich, F. (1992). Anisotropic suppression of the energy gap in CeNiSn by high magnetic fields. Physical Review B, 45(10), 5740-5743. https://doi.org/10.1103/PhysRevB.45.5740

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abstract = "The formation of the pseudogap in CeNiSn has been investigated by means of resistivity and specific-heat measurements in high magnetic fields. When the field is raised from 0 to 12 T along the orthorhombic a axis, the semiconductorlike behavior in the resistivity below 6 K disappears and the linear electronic term in the specific heat increases from 57 to 100 mJ/K2 mol. However, no significant effect was observed for fields along the b and c axes up to 15 T. These results suggest an anisotropic suppression of the pseudogap, which can be interpreted as a result of strong spin polarization of the renormalized narrow band.",

author = "T. Takabatake and M. Nagasawa and H. Fujii and G. Kido and M. Nohara and S. Nishigori and T. Suzuki and T. Fujita and R. Helfrich and U. Ahlheim and K. Fraas and C. Geibel and F. Steglich",

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AU - Takabatake, T.

AU - Nagasawa, M.

AU - Fujii, H.

AU - Kido, G.

AU - Nohara, M.

AU - Nishigori, S.

AU - Suzuki, T.

AU - Fujita, T.

AU - Helfrich, R.

AU - Ahlheim, U.

AU - Fraas, K.

AU - Geibel, C.

AU - Steglich, F.

PY - 1992/1/1

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N2 - The formation of the pseudogap in CeNiSn has been investigated by means of resistivity and specific-heat measurements in high magnetic fields. When the field is raised from 0 to 12 T along the orthorhombic a axis, the semiconductorlike behavior in the resistivity below 6 K disappears and the linear electronic term in the specific heat increases from 57 to 100 mJ/K2 mol. However, no significant effect was observed for fields along the b and c axes up to 15 T. These results suggest an anisotropic suppression of the pseudogap, which can be interpreted as a result of strong spin polarization of the renormalized narrow band.

AB - The formation of the pseudogap in CeNiSn has been investigated by means of resistivity and specific-heat measurements in high magnetic fields. When the field is raised from 0 to 12 T along the orthorhombic a axis, the semiconductorlike behavior in the resistivity below 6 K disappears and the linear electronic term in the specific heat increases from 57 to 100 mJ/K2 mol. However, no significant effect was observed for fields along the b and c axes up to 15 T. These results suggest an anisotropic suppression of the pseudogap, which can be interpreted as a result of strong spin polarization of the renormalized narrow band.

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