Unconventional superconductivity and magnetism in CePt3Si- xGex

E. Bauer; G. Hilscher; H. Michor; M. Sieberer; E. W. Scheidt; A. Gribanov; Yu Seropegin; P. Rogl; A. Amato; W. Y. Song; J. G. Park; D. T. Adroja; M. Nicklas; G. Sparn; M. Yogi; Y. Kitaoka

doi:10.1016/j.physb.2005.01.062

Unconventional superconductivity and magnetism in CePt₃Si- _xGe_x

E. Bauer, G. Hilscher, H. Michor, M. Sieberer, E. W. Scheidt, A. Gribanov, Yu Seropegin, P. Rogl, A. Amato, W. Y. Song, J. G. Park, D. T. Adroja, M. Nicklas, G. Sparn, M. Yogi, Y. Kitaoka

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

34 Citations (Scopus)

Abstract

CePt3Si is a novel ternary compound exhibiting antiferromagnetic order at TN≈2.2K and superconductivity (SC) at Tc≈0.75K. Large values of Hc2′≈-8.5T/K and Hc2(0)≈5T indicate Cooper pairs formed out of heavy quasiparticles. The mass enhancement originates from Kondo interaction with a characteristic temperature TK≈8K. NMR and μSR measurements evidence coexistence of SC and long-range magnetic order on a microscopic scale. Moreover, CePt3Si is the first heavy fermion SC without an inversion symmetry. This gives rise to a novel type of NMR relaxation rate 1/T1 which is very unique and never reported before for other heavy fermion superconductors. Studies of Si/Ge substitution allow us to establish a phase diagram.

Original language	English
Pages (from-to)	360-367
Number of pages	8
Journal	Physica B: Condensed Matter
Volume	359-361
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physb.2005.01.062
Publication status	Published - 30 Apr 2005
Externally published	Yes

Keywords

Antiferromagnetism
CePtSi
Superconductivity

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1016/j.physb.2005.01.062

Cite this

Bauer, E., Hilscher, G., Michor, H., Sieberer, M., Scheidt, E. W., Gribanov, A., Seropegin, Y., Rogl, P., Amato, A., Song, W. Y., Park, J. G., Adroja, D. T., Nicklas, M., Sparn, G., Yogi, M., & Kitaoka, Y. (2005). Unconventional superconductivity and magnetism in CePt₃Si- _xGe_x. Physica B: Condensed Matter, 359-361(SPEC. ISS.), 360-367. https://doi.org/10.1016/j.physb.2005.01.062

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abstract = "CePt3Si is a novel ternary compound exhibiting antiferromagnetic order at TN≈2.2K and superconductivity (SC) at Tc≈0.75K. Large values of Hc2′≈-8.5T/K and Hc2(0)≈5T indicate Cooper pairs formed out of heavy quasiparticles. The mass enhancement originates from Kondo interaction with a characteristic temperature TK≈8K. NMR and μSR measurements evidence coexistence of SC and long-range magnetic order on a microscopic scale. Moreover, CePt3Si is the first heavy fermion SC without an inversion symmetry. This gives rise to a novel type of NMR relaxation rate 1/T1 which is very unique and never reported before for other heavy fermion superconductors. Studies of Si/Ge substitution allow us to establish a phase diagram.",

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AU - Bauer, E.

AU - Hilscher, G.

AU - Michor, H.

AU - Sieberer, M.

AU - Scheidt, E. W.

AU - Gribanov, A.

AU - Seropegin, Yu

AU - Rogl, P.

AU - Amato, A.

AU - Song, W. Y.

AU - Park, J. G.

AU - Adroja, D. T.

AU - Nicklas, M.

AU - Sparn, G.

AU - Yogi, M.

AU - Kitaoka, Y.

PY - 2005/4/30

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N2 - CePt3Si is a novel ternary compound exhibiting antiferromagnetic order at TN≈2.2K and superconductivity (SC) at Tc≈0.75K. Large values of Hc2′≈-8.5T/K and Hc2(0)≈5T indicate Cooper pairs formed out of heavy quasiparticles. The mass enhancement originates from Kondo interaction with a characteristic temperature TK≈8K. NMR and μSR measurements evidence coexistence of SC and long-range magnetic order on a microscopic scale. Moreover, CePt3Si is the first heavy fermion SC without an inversion symmetry. This gives rise to a novel type of NMR relaxation rate 1/T1 which is very unique and never reported before for other heavy fermion superconductors. Studies of Si/Ge substitution allow us to establish a phase diagram.

AB - CePt3Si is a novel ternary compound exhibiting antiferromagnetic order at TN≈2.2K and superconductivity (SC) at Tc≈0.75K. Large values of Hc2′≈-8.5T/K and Hc2(0)≈5T indicate Cooper pairs formed out of heavy quasiparticles. The mass enhancement originates from Kondo interaction with a characteristic temperature TK≈8K. NMR and μSR measurements evidence coexistence of SC and long-range magnetic order on a microscopic scale. Moreover, CePt3Si is the first heavy fermion SC without an inversion symmetry. This gives rise to a novel type of NMR relaxation rate 1/T1 which is very unique and never reported before for other heavy fermion superconductors. Studies of Si/Ge substitution allow us to establish a phase diagram.

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