Unconventional superconducting phase in the weakly correlated noncentrosymmetric<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mtext>Mo</mml:mtext></mml:mrow><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mrow><mml:mtext>Al</mml:mtext></mml:mrow><mml:mn>2</mml:mn></mml:msub><mml:mtext>C</mml:mtext></mml:mrow></mml:math>compound

Bauer, E.; Rogl, Gerda; Chen, Xing-Qiu; Khan, Rao Tahir Ali; Michor, H.; Hilscher, G.; Royanian, E.; Kumagai, K.; Li, D. Z.; Li, Y. Y.; Podloucky, R.; Rogl, P.

doi:10.1103/physrevb.82.064511

Cited by 145 publications

(164 citation statements)

References 29 publications

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“…[6][7][8][9][10] The difference was explained by the peculiar crystal structure distortion as to increase the extent of inversionsymmetry breaking in Li 2 Pt 3 B.…”

Section: 5mentioning

confidence: 99%

Spin-singlet superconductivity with a full gap in locally noncentrosymmetric SrPtAs

et al. 2014

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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 relaxation rate 1/T 1 shows a well-defined coherence peak below T c and decreases exponentially at low temperatures. The spin susceptibility measured by the Knight shift also decreases below T c down to T < T c /6. These data together with the penetration depth obtained from the NMR spectra can be consistently explained by assuming a spin-singlet superconducting state with a full gap. Our results suggest that the spin-orbit coupling due to the local inversion-breaking is not large enough to bring about an exotic superconducting state, or the inter-layer hopping interaction is larger than the spin-orbit coupling.

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“…[6][7][8][9][10] The difference was explained by the peculiar crystal structure distortion as to increase the extent of inversionsymmetry breaking in Li 2 Pt 3 B.…”

Section: 5mentioning

confidence: 99%

Spin-singlet superconductivity with a full gap in locally noncentrosymmetric SrPtAs

et al. 2014

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“…The superconducting properties of several weakly correlated NCS systems have been extensively investigated, with notable examples such as: Li2(Pd,Pt)3B, Y2C3, Mg10Ir19B16, Ru7B3, LaIrP, Mo3Al3C, and with particular interest for this work LaNiC2. [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29] A large series of rare-earth (R) carbides RNiC2 and RCoC2 crystallize in the NCS CeNiC2 prototype structure, which is in the base centered orthorhombic space group Amm2. 30 These compounds generally display magnetic order arising from the 4f electrons confined to the rare earth sites, 31 in addition to the series being near a charge density wave (CDW) instability.…”

Section: Introductionmentioning

confidence: 99%

Tuning of superconductivity by Ni substitution into noncentrosymmetric ThCo1−xNixC2

et al. 2017

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The recently discovered noncentrosymmetric superconductor ThCoC2 was observed to show unusual superconducting behavior with a critical temperature of Tc=2.65K. Here we investigate the effect of Nickel substitution on the superconducting state in ThCo1-xNixC2. Magnetization, resistivity, and heat capacity measurements demonstrates Ni substitution has a dramatic effect with critical temperature increased up to Tc=12.1K for x=0.4 Ni concentration, which is a rather high transition temperature for a noncentrosymmetric superconductor. In addition, the unusual superconducting characteristics observed in pure ThCoC2 appear to be suppressed or tuned with Ni substitution towards a more conventional fully gapped superconductor.

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“…Li 2 Pd 3 B is an s-wave superconductor, while the stronger ASOC in Li 2 Pt 3 B enhances the triplet component, producing line nodes in the gap, as revealed by the linear temperature dependence of the magnetic penetration depth λ(T ) at low T [11,12]. Mo 3 Al 2 C (NCS chiral space group P 4 1 32) is a strongly coupled superconductor with a T c of 9 K. NMR and electronic heat capacity data, along with a pressure-enhanced T c , suggest Mo 3 Al 2 C has a nodal gap with singlet-triplet mixing [13,14].…”

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confidence: 99%

Multigap superconductivity in chiral noncentrosymmetric TaRh2B2

et al. 2018

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We report the observation of multigap superconductivity in TaRh 2 B 2 . We show TaRh 2 B 2 is a bulk type-II superconductor with a transition temperature T c = 6.00(5) K. We present transverse-field muon spin relaxation data where the superconducting gap can be fit using a two-gap (s + s)-wave model. We also report the zero-field electronic specific heat in the superconducting state that is best described by the same (s + s) model, providing further evidence of multiband behavior in this superconductor. Zero-field muon spin relaxation measurements show time-reversal symmetry is preserved in the superconducting state. We demonstrate that TaRh 2 B 2 has an upper critical field of 15.2(1) T, which is significantly higher than previously reported and exceeds the Pauli limit.

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Unconventional superconducting phase in the weakly correlated noncentrosymmetricMo3Al2Ccompound

Cited by 145 publications

References 29 publications

Spin-singlet superconductivity with a full gap in locally noncentrosymmetric SrPtAs

Spin-singlet superconductivity with a full gap in locally noncentrosymmetric SrPtAs

Tuning of superconductivity by Ni substitution into noncentrosymmetric ThCo1−xNixC2

Multigap superconductivity in chiral noncentrosymmetric TaRh2B2

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