Microscopic magnetic nature of water absorbed Na0.35CoO2 investigated by NMR, NQR and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si9.gif" overflow="scroll"><mml:mrow><mml:msup><mml:mrow><mml:mi>μ</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup><mml:mtext>SR</mml:mtext></mml:mrow></mml:math>

Ohta, H.; Må̊nsson, Martin; Ikedo, Yutaka; Sugiyama, Jun; Michioka, Chishiro; Yoshimura, Kazuyoshi; Brewer, J. H.; Ansaldo, Eduardo J.; Stubbs, Scott L.; Chow, K. H.; Lord, J. S.

doi:10.1016/j.physc.2009.11.032

Cited by 4 publications

(1 citation statement)

References 9 publications

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“…Another candidate is water-intercalated sodium cobalt dioxides Na x CoO 2 ⋅1.3H 2 O (), which exhibits a SC transition at T c ≈ 5 K 34 . By controlling x using the trigonal CoO 2 distortion, two SC phases appear and they are separated by a narrow magnetic phase 35 . A theoretical multi-band tight-binding calculation speculated that the SC state for larger x is of s -wave spin-singlet and that for smaller x is of p - or f -wave spin-triplet.…”

Section: Introductionmentioning

confidence: 99%

Triplet superconductivity in coupled odd-gon rings

Reja

Nishimoto

2019

Sci Rep

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Shedding light on the nature of spin-triplet superconductivity has been a long-standing quest in condensed matter physics since the discovery of superfluidity in liquid 3 He. Nevertheless, the mechanism of spin-triplet pairing is much less understood than that of spin-singlet pairing explained by the Bardeen-Cooper-Schrieffer theory or even observed in high-temperature superconductors. Here we propose a versatile mechanism for spin-triplet superconductivity which emerges through a melting of macroscopic spin polarization stabilized in weakly coupled odd-gon (e.g., triangle, pentagon, etc) systems. We demonstrate the feasibility of sustaining spin-triplet superconductivity with this mechanism by considering a new class of quasi-one-dimensional superconductors A 2 Cr 3 As 3 (A = K, Rb, and Cs). Furthermore, we suggest a simple effective model to easily illustrate the adaptability of the mechanism to general systems consisting of odd-gon units. This mechanism provides a rare example of superconductivity from on-site Coulomb repulsion.

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Section: Introductionmentioning

confidence: 99%