11B and 195Pt NMR study of the superconductors Li2(Pd1-xPtx)3B without inversion symmetry

S. Harada; Y. Inada; G. Q. Zheng

doi:10.1016/j.physc.2010.05.043

¹¹B and ¹⁹⁵Pt NMR study of the superconductors Li₂(Pd_1-xPt_x)₃B without inversion symmetry

S. Harada, Y. Inada, G. Q. Zheng

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

4 Citations (Scopus)

Abstract

We report the ¹¹B and ¹⁹⁵Pt NMR measurements in non-centrosymmetric superconductors Li₂(Pd₁ _xPt_x)₃B (x = 0.0, 0.2, 0.5, 1.0). From the measurements of spin-lattice relaxation time (T₁), we found that there was a coherence peak (CP) just below superconducting transition temperature (T_c) for x = 0-0.5 but no CP in x= 1. We demonstrated that the system for x= 0-0.5 were BCS superconductors but there existed line node in the superconducting gap for x = 1.0. The ¹⁹⁵Pt Knight Shift in x = 0.2 decreased below T_c, indicating spin-singlet state. The results showed that BCS superconducting state evolves into an exotic state with line-nodes in the gap function when x is increased, as the spin-orbit coupling is enhanced.

Original language	English
Pages (from-to)	1089-1091
Number of pages	3
Journal	Physica C: Superconductivity and its applications
Volume	470
Issue number	20
DOIs	https://doi.org/10.1016/j.physc.2010.05.043
Publication status	Published - Nov 1 2010

Keywords

NMR
Non-centrosymmetric superconductor
Nuclear spin-lattice relaxation rate

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Access to Document

10.1016/j.physc.2010.05.043

Cite this

@article{c7392a22151c4d0ebb2fb02dbd6f863c,

title = "11B and 195Pt NMR study of the superconductors Li2(Pd1-xPtx)3B without inversion symmetry",

abstract = "We report the 11B and 195Pt NMR measurements in non-centrosymmetric superconductors Li2(Pd1 xPtx)3B (x = 0.0, 0.2, 0.5, 1.0). From the measurements of spin-lattice relaxation time (T1), we found that there was a coherence peak (CP) just below superconducting transition temperature (Tc) for x = 0-0.5 but no CP in x= 1. We demonstrated that the system for x= 0-0.5 were BCS superconductors but there existed line node in the superconducting gap for x = 1.0. The 195Pt Knight Shift in x = 0.2 decreased below Tc, indicating spin-singlet state. The results showed that BCS superconducting state evolves into an exotic state with line-nodes in the gap function when x is increased, as the spin-orbit coupling is enhanced.",

keywords = "NMR, Non-centrosymmetric superconductor, Nuclear spin-lattice relaxation rate",

author = "S. Harada and Y. Inada and Zheng, {G. Q.}",

year = "2010",

month = nov,

day = "1",

doi = "10.1016/j.physc.2010.05.043",

language = "English",

volume = "470",

pages = "1089--1091",

journal = "Physica C: Superconductivity and its applications",

issn = "0921-4534",

publisher = "Elsevier",

number = "20",

}

TY - JOUR

T1 - 11B and 195Pt NMR study of the superconductors Li2(Pd1-xPtx)3B without inversion symmetry

AU - Harada, S.

AU - Inada, Y.

AU - Zheng, G. Q.

PY - 2010/11/1

Y1 - 2010/11/1

N2 - We report the 11B and 195Pt NMR measurements in non-centrosymmetric superconductors Li2(Pd1 xPtx)3B (x = 0.0, 0.2, 0.5, 1.0). From the measurements of spin-lattice relaxation time (T1), we found that there was a coherence peak (CP) just below superconducting transition temperature (Tc) for x = 0-0.5 but no CP in x= 1. We demonstrated that the system for x= 0-0.5 were BCS superconductors but there existed line node in the superconducting gap for x = 1.0. The 195Pt Knight Shift in x = 0.2 decreased below Tc, indicating spin-singlet state. The results showed that BCS superconducting state evolves into an exotic state with line-nodes in the gap function when x is increased, as the spin-orbit coupling is enhanced.

AB - We report the 11B and 195Pt NMR measurements in non-centrosymmetric superconductors Li2(Pd1 xPtx)3B (x = 0.0, 0.2, 0.5, 1.0). From the measurements of spin-lattice relaxation time (T1), we found that there was a coherence peak (CP) just below superconducting transition temperature (Tc) for x = 0-0.5 but no CP in x= 1. We demonstrated that the system for x= 0-0.5 were BCS superconductors but there existed line node in the superconducting gap for x = 1.0. The 195Pt Knight Shift in x = 0.2 decreased below Tc, indicating spin-singlet state. The results showed that BCS superconducting state evolves into an exotic state with line-nodes in the gap function when x is increased, as the spin-orbit coupling is enhanced.

KW - NMR

KW - Non-centrosymmetric superconductor

KW - Nuclear spin-lattice relaxation rate

UR - http://www.scopus.com/inward/record.url?scp=77957900990&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77957900990&partnerID=8YFLogxK

U2 - 10.1016/j.physc.2010.05.043

DO - 10.1016/j.physc.2010.05.043

M3 - Article

AN - SCOPUS:77957900990

SN - 0921-4534

VL - 470

SP - 1089

EP - 1091

JO - Physica C: Superconductivity and its applications

JF - Physica C: Superconductivity and its applications

IS - 20

ER -