start-ver=1.4
cd-journal=joma
no-vol=97
cd-vols=
no-issue=18
article-no=
start-page=184510
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2018
dt-pub=20180521
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Fully gapped spin-singlet superconductivity in noncentrosymmetric PbTaSe2: Pb-207 nuclear magnetic resonance study
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract= We report the Pb-207 nuclear magnetic resonance (NMR) measurements on polycrystalline sample of PbTaSe2 with noncentrosymmetric crystal structure and topological electronic band. The nuclear spin-lattice relaxation rate 1 / T-1) shows a suppressed coherence peak below the superconducting transition temperature T-c = 4.05 K and decreases as an exponential function of temperature. The penetration depth derived from the NMR spectrum is almost temperature independent below T = 0.7 T-c. The Knight shift K decreases below T-c. These results suggest spin-singlet superconductivity with a fully opened gap 2 Delta = 3.5 k(B)T(c) in PbTaSe2.
en-copyright=
kn-copyright=

en-aut-name=MaedaS.
en-aut-sei=Maeda
en-aut-mei=S.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=MatanoK.
en-aut-sei=Matano
en-aut-mei=K.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=ZhengGuo-qing
en-aut-sei=Zheng
en-aut-mei=Guo-qing
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

affil-num=1
en-affil=Department of Physics, Okayama University
kn-affil=

affil-num=2
en-affil=Department of Physics, Okayama University
kn-affil=

affil-num=3
en-affil=Institute of Physics, Chinese Academy of Sciences, and Beijing National Laboratory for Condensed Matter Physics
kn-affil=
END