Физика Низких Температур: Том 27, Выпуск 9-10 (Сентябрь 2001), c. 952-955    ( к оглавлению , назад )

Magnetization and magnetostriction oscillations in a superconducting 2H-NbSe2 single crystal

V. Eremenko, V. Sirenko, and Yu. Shabakayeva

B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Lenin Ave., Kharkov 61103, Ukraine
E-mail: sirenko@ilt.kharkov.ua

R. Schleser

Grenoble High Magnetic Field Laboratory, MPI-FKF and CNRS, BP-166, F-38042, Grenoble Cedex 09, France

P. L. Gammel

Bell Laboratories, Lucent Technologies, Murray Hill, New Jersey 07974, USA

Received May 29, 2001


The results of a comparative study of the oscillating magnetostriction and absolute magnetization components in the single crystal of the layered superconducting compound 2H-NbSe2 are presented. The measurements were made in the temperature range 1.5-8 K in a magnetic field of 0-20 T with in-plane orientation (normal to the hexagonal axis). The mechanical stress derivative of the extremal cross-sectional area of the Fermi surface is derived from a thermodynamic analysis. The values obtained are considerably higher, by an order of magnitude, than those for other metals, which explains the observed enhancement of the magnetostriction oscillations in comparison with the magnetization oscillations.

75.80.+q - Magnetomechanical and magnetoelectric effects, magnetostriction
74.25.Ha - Magnetic properties
74.40.Ad -