Anisotropic pseudogap in CeNiSn and CeRhSb studied by a thermal-conductivity measurement

M. Sera, N. Kobayashi, T. Yoshino, K. Kobayashi, T. Takabatake, G. Nakamoto, and H. Fujii
Phys. Rev. B 55, 6421 – Published 1 March 1997
PDFExport Citation

Abstract

We have measured the thermal conductivity κ for CeNiSn, CeNi0.95M0.05Sn (M=Co,Cu), and CeRhSb single crystals. The pronounced enhancement of κ along the b axis is observed around 5 and 10 K in CeNiSn and CeRhSb, respectively. In CeNiSn, this enhancement is almost completely suppressed either by application of a magnetic field of 15 T along the a axis, which is the easy axis of magnetization, or by the substitution of 5% Co and Cu for Ni. These results indicate that the enhancement of κ along the b axis originates from the opening of the pseudogap in these compounds. On the other hand, the enhancement of κ along the a axis in CeNiSn and those along the a and c axis in CeRhSb are much smaller than that along the b axis. These anisotropic behaviors in κ reflect the anisotropy of the gap in these compounds.

  • Received 23 August 1996

DOI:https://doi.org/10.1103/PhysRevB.55.6421

©1997 American Physical Society

Authors & Affiliations

M. Sera and N. Kobayashi

  • Institute for Materials Research, Tohoku University, 980-77 Sendai, Japan

T. Yoshino, K. Kobayashi, and T. Takabatake

  • Department of Materials Science, Faculty of Science, Hiroshima University, Higashi-Hiroshima 739, Japan

G. Nakamoto and H. Fujii

  • Faculty of Integrated Arts and Sciences, Hiroshima University, Higashi-Hiroshima 739, Japan

References (Subscription Required)

Click to Expand
Issue

Vol. 55, Iss. 10 — 1 March 1997

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×