Collapse of the Pseudogap in Kondo Semimetal CeNiSn Observed by Magnetization and Magnetoresistance Measurements in High Magnetic Fields up to 65T

Search this Article

Author(s)

Abstract

The effect of magnetic field on the pseudogap in the Kondo semimetal CeNiSn has been reinvestigated by the measurement of magnetization and longitudinal magnetoresistance in pulsed high magnetic fields applied along the principal crystallographic directions of the orthorhombic structure. By extending the field range up to 65T, metamagnetic behaviors at 45 and 60T are observed for the first time along the easy magnetization direction of a-axis. No anomaly is found, on the other hand, along the b-and c-axes up to 55T. The magnetoresistance along the a-axis exhibits the minimum at about 30T and increases above 40T, which is in accord with the anomalous increase of the magnetization. By contrast, the magnetoresistance along the b-and c-axes shows only a monotonous decrease above 10T. These results are discussed in terms of a Zeeman splitting of the double-gapped density of states derived from the anisotropic hybridization-gap model.

Journal

  • Journal of the Physical Society of Japan

    Journal of the Physical Society of Japan 74(9), 2612-2616, 2005-09-15

    The Physical Society of Japan (JPS)

References:  23

Codes

  • NII Article ID (NAID)
    110002245751
  • NII NACSIS-CAT ID (NCID)
    AA00704814
  • Text Lang
    ENG
  • Article Type
    ART
  • ISSN
    00319015
  • NDL Article ID
    7439659
  • NDL Source Classification
    ZM35(科学技術--物理学)
  • NDL Call No.
    Z53-A404
  • Data Source
    CJP  NDL  NII-ELS 
Page Top