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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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 languageEnglish
Pages (from-to)5740-5743
Number of pages4
JournalPhysical Review B
Volume45
Issue number10
DOIs
Publication statusPublished - Jan 1 1992
Externally publishedYes

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