TY - JOUR
T1 - Evolution of ground state and upper critical field in R 1-xGdxNi2B2C (R=Lu,Y )
T2 - Coexistence of superconductivity and spin-glass state
AU - Bud'Ko, S. L.
AU - Kogan, V. G.
AU - Hodovanets, H.
AU - Ran, S.
AU - Moser, S. A.
AU - Lampe, M. J.
AU - Canfield, P. C.
PY - 2010/11/17
Y1 - 2010/11/17
N2 - We report effects of local magnetic moment, Gd3+, doping (x≲0.3) on superconducting and magnetic properties of the closely related Lu1-x Gdx Ni2 B2 C and Y 1-x Gdx Ni2 B2 C series. The superconducting transition temperature decreases and the heat capacity jump associated with it drops rapidly with Gd doping; qualitative changes with doping are also observed in the temperature-dependent upper critical field behavior, and a region of coexistence of superconductivity and spin-glass state is delineated on the x-T phase diagram. The evolution of superconducting properties can be understood within Abrikosov-Gor'kov theory of magnetic impurities in superconductors taking into account the paramagnetic effect on upper critical field with additional contributions particular for the family under study.
AB - We report effects of local magnetic moment, Gd3+, doping (x≲0.3) on superconducting and magnetic properties of the closely related Lu1-x Gdx Ni2 B2 C and Y 1-x Gdx Ni2 B2 C series. The superconducting transition temperature decreases and the heat capacity jump associated with it drops rapidly with Gd doping; qualitative changes with doping are also observed in the temperature-dependent upper critical field behavior, and a region of coexistence of superconductivity and spin-glass state is delineated on the x-T phase diagram. The evolution of superconducting properties can be understood within Abrikosov-Gor'kov theory of magnetic impurities in superconductors taking into account the paramagnetic effect on upper critical field with additional contributions particular for the family under study.
UR - https://www.scopus.com/pages/publications/78649739465
U2 - 10.1103/PhysRevB.82.174513
DO - 10.1103/PhysRevB.82.174513
M3 - Article
AN - SCOPUS:78649739465
SN - 1098-0121
VL - 82
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 17
M1 - 174513
ER -