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We report the nuclear magnetic resonance (NMR) and nuclear quadrupole resonance (NQR) measurements for non-centrosymmetric superconductors Re7B3, LaBiPt, and BiPd containing heavy elements. For all three compounds, the spin-lattice…

For a noncentrosymmetric superconductor such as CePt3Si, we consider a Cooper pairing model with a two-component order parameter composed of spin-singlet and spin-triplet pairing components. We demonstrate that such a model on a qualitative…

超导电性 · 物理学 2016-08-31 N. Hayashi , K. Wakabayashi , P. A. Frigeri , M. Sigrist

We report the measurements of the $^{29}$Si Knight shift $^{29}K$ on the noncentrosymmetric heavy-fermion compound CePt$_{3}$Si in which antiferromagnetism (AFM) with $T_{\rm N}=2.2$ K coexists with superconductivity (SC) with $T_{c}=0.75$…

We report on a microscopic study of the noncentrosymmetric superconductor W$_3$Al$_2$C (with $T_c$ = 7.6 K), mostly by means of $^{27}$Al- and $^{13}$C nuclear magnetic resonance (NMR). Since in this material the density of states at the…

超导电性 · 物理学 2022-03-10 D. Tay , T. Shang , Y. P. Qi , T. P. Ying , H. Hosono , H-R. Ott , T. Shiroka

We numerically study the spatially-resolved NMR around a single vortex in a noncentrosymmetric superconductor such as CePt3Si. The nuclear spin-lattice relaxation rate 1/T1 under the influence of the vortex core states is calculated for an…

超导电性 · 物理学 2016-08-31 N. Hayashi , K. Wakabayashi , P. A. Frigeri , Y. Kato , M. Sigrist

We report on novel antiferromagnetic (AFM) and superconducting (SC) properties of noncentrosymmetric CePt3Si through measurements of the 195Pt nuclear spin-lattice relaxation rate 1/T_1. In the normal state, the temperature (T) dependence…

超导电性 · 物理学 2016-08-16 M. Yogi , Y. Kitaoka , S. Hashimoto , T. Yasuda , R. Settai , T. D. Matsuda , Y. Haga , Y. Ōnuki , P. Rogl , E. Bauer

We report $^{195}$Pt-NMR and $^{75}$As-NQR measurements for the locally non-centrosymmetric superconductor SrPtAs where the As-Pt layer breaks inversion symmetry while globally the compound is centrosymmetric. The nuclear spin lattice…

超导电性 · 物理学 2014-04-18 K. Matano , K. Arima , S. Maeda , Y. Nishikubo , K. Kudo , M. Nohara , Guo-qing Zheng

Nuclear magnetic resonance (NMR) measurements on the $^{195}$Pt nucleus in an aligned powder of the moderately heavy-fermion material U2PtC2 are consistent with spin-triplet pairing in its superconducting state. Across the superconducting…

超导电性 · 物理学 2015-06-24 A. M. Mounce , H. Yasuoka , G. Koutroulakis , N. Ni , E. D. Bauer , F. Ronning , J. D. Thompson

We report the results of $^{139}$La NMR measurements in the non-centrosymmetric superconductor LaRhGe$_3$. This material crystallizes in a tetragonal structure without inversion symmetry and exhibits type-I superconductivity below 385 mK.…

超导电性 · 物理学 2025-01-24 Shunsaku Kitagawa , Hiroyasu Matsudaira , Kenji Ishida , Mohamed Oudah

In this article, we report the temperature dependence of spin-lattice relaxation rates at two Pt sites and one Si site in CePt3Si with a non-centrosymmetric structure center. 1/T1 for both Pt sites between 2 K and 300 K and 1/T1 of Si above…

超导电性 · 物理学 2009-11-10 K. Ueda , K. Hamamoto , T. Kohara , G. Motoyama , Y. Oda

In a superconductor that lacks inversion symmetry, the spatial part of the Cooper pair wave function has a reduced symmetry, allowing for the mixing of spin-singlet and spin-triplet Cooper pairing channels and thus providing a pathway to a…

Superconductivity and magnetism in the non-centrosymmetric heavy fermion compound CePt$_3$Si and related materials are theoretically investigated. Based on the randam phase approximation (RPA) analysis for the extended Hubbard model we…

超导电性 · 物理学 2009-11-13 Youichi Yanase , Manfred Sigrist

A new ternary platinum phosphide CePt$_{3}$P was synthesized and characterized by means of magnetic, thermodynamic and transport measurements. The compound crystallizes in an antiperovskite tetragonal structure similar to that in the…

强关联电子 · 物理学 2017-04-11 Jian Chen , Zhen Wang , Shiyi Zheng , Chunmu Feng , Jianhui Dai , Zhuan Xu

Electrical resistivity, specific heat and NMR measurements classify non-centrosymmetric $\rm Mo_3Al_2C$ ($\beta$-Mn type, space group $P4_132$) as a strong-coupled superconductor with $T_c = 9$~K deviating notably from BCS-like behaviour.…

Superconducting crystals with lack of inversion symmetry can potentially host unconventional pairing. However, till date, no direct conclusive experimental evidence of such unconventional order parameters in non-centrosymmetric…

SrAuSi$_3$ is a noncentrosymmetric superconductor (NCS) with $T_c$ = 1.54 K, which to date has been studied only via macroscopic techniques. By combining nuclear magnetic resonance (NMR) and muon-spin rotation ($\mu$SR) measurements we…

超导电性 · 物理学 2018-01-12 N. Barbero , P. K. Biswas , M. Isobe , A. Amato , E. Morenzoni , A. D. Hillier , H. -R. Ott , J. Mesot , T. Shiroka

We report ^{11}B and ^{195}Pt NMR measurements in non-centrosymmetric superconductor Li_2Pt_3B. We find that the spin susceptibility measured by the Knight shift remains unchanged across the superconducting transition temperature T_c. With…

超导电性 · 物理学 2009-11-13 M. Nishiyama , Y. Inada , Guo-qing Zheng

This article is a pedagogical review of theoretical studies of noncentrosymmetric superconductors with particular emphasis on the role played by electron correlation, which is important for heavy fermion systems. We survey unique properties…

超导电性 · 物理学 2009-11-13 Satoshi Fujimoto

We report crystallographic, specific heat, transport, and magnetic properties of the recently discovered noncentrosymmetric 5d-electron superconductors CaIrSi3 (Tc = 3.6 K) and CaPtSi3 (Tc = 2.3 K). The specific heat suggests that these…

超导电性 · 物理学 2012-11-22 G. Eguchi , D. C. Peets , M. Kriener , Y. Maeno , E. Nishibori , Y. Kumazawa , K. Banno , S. Maki , H. Sawa

We report $^{195}$Pt nuclear magnetic resonance (NMR) measurements on topological superconductor candidate YPtBi which has the broken inversion symmetry and topological non-trivial band structures due to the strong spin-orbit coupling(SOC).…

超导电性 · 物理学 2023-08-01 Y. Z. Zhou , J. Chen , Z. X. Li , J. Luo , J. Yang , Y. F. Guo , W. H. Wang , R. Zhou , Guo-qing Zheng
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