Evolution of ground state and upper critical field in R 1-xGdxNi2B2C (R=Lu,Y ): Coexistence of superconductivity and spin-glass state

S. L. Bud'Ko; V. G. Kogan; H. Hodovanets; S. Ran; S. A. Moser; M. J. Lampe; P. C. Canfield

doi:10.1103/PhysRevB.82.174513

Evolution of ground state and upper critical field in R _1-xGd_xNi₂B₂C (R=Lu,Y ): Coexistence of superconductivity and spin-glass state

S. L. Bud'Ko
, V. G. Kogan
, H. Hodovanets
, S. Ran
, S. A. Moser
, M. J. Lampe
, P. C. Canfield

Department of Physics

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

We report effects of local magnetic moment, Gd³⁺, doping (x≲0.3) on superconducting and magnetic properties of the closely related Lu_1-x Gd_x Ni₂ B₂ C and Y _1-x Gd_x 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.

Original language	English
Article number	174513
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	82
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevB.82.174513
State	Published - Nov 17 2010

Access to Document

10.1103/PhysRevB.82.174513

Cite this

@article{ea701623b563412c8909a7f2e7dc14e1,

title = "Evolution of ground state and upper critical field in R 1-xGdxNi2B2C (R=Lu,Y ): Coexistence of superconductivity and spin-glass state",

abstract = "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.",

author = "Bud'Ko, \{S. L.\} and Kogan, \{V. G.\} and H. Hodovanets and S. Ran and Moser, \{S. A.\} and Lampe, \{M. J.\} and Canfield, \{P. C.\}",

year = "2010",

month = nov,

day = "17",

doi = "10.1103/PhysRevB.82.174513",

language = "English",

volume = "82",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "1098-0121",

number = "17",

}

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 -

Evolution of ground state and upper critical field in R _1-xGd_xNi₂B₂C (R=Lu,Y ): Coexistence of superconductivity and spin-glass state

Abstract

Access to Document

Other files and links

Fingerprint

Cite this