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Anisotropic electrical resistivity of the magnetic heavy-fermion superconductor URu/sub 2/Si/sub 2/

Journal Article · · Phys. Rev. B: Condens. Matter; (United States)
Electrical-resistivity measurements rho(T,H) on single-crystal URu/sub 2/Si/sub 2/ have been performed between 0.3 and 300 K in fields up to 7 T. rho(T) is highly anisotropic with the 300-K values parallel to the a and c axes differing by a factor of 2. Both directions exhibit a drho/dT<0 down to 80 K, followed by a steep decrease in rho below 50 K. An upper antiferromagnetic transition is clearly discerned by a ''Cr-like'' anomaly at roughly-equal17 K which also marks the onset of a strong, positive rho(H). Below 4 K rho(T) is isotropic and goes to zero at the superconducting transition T/sub c/ = 0.8 K.
Research Organization:
Kamerlingh Onnes Laboratorium der Rijks-Universiteit Leiden, 2300 RA Leiden, The Netherlands
OSTI ID:
5885461
Journal Information:
Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 33:9; ISSN PRBMD
Country of Publication:
United States
Language:
English