ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Oxfordshire OX11 0QX, United Kingdom.
Phys Rev Lett. 2013 Mar 8;110(10):107005. doi: 10.1103/PhysRevLett.110.107005. Epub 2013 Mar 6.
The low-field phase of the organic superconductor (TMTSF)(2)ClO(4) is studied by muon-spin rotation. The zero temperature limit of the magnetic penetration depth within the TMTSF layers is obtained to be λ(ab)(0) = 0.86(2) μm. Temperature dependence of the muon-spin relaxation shows no indication of gap nodes on the Fermi surface nor of any spontaneous fields due to time-reversal-symmetry breaking. The weight of evidence suggests that the symmetry of this low-field phase is odd-frequency p-wave singlet, a novel example of odd-frequency pairing in a bulk superconductor.
利用μ子自旋旋转研究了有机超导体（TMTSF）（2）ClO（4）的低场相。得到 TMTSF 层内磁穿透深度的零温极限为 λ（ab）（0）=0.86（2）μm。μ子自旋弛豫的温度依赖性表明费米面处没有间隙节点，也没有由于时间反演对称性破缺而产生的任何自发场。大量证据表明，这种低场相的对称性是奇数频率 p 波单态，这是在体超导体中奇数频率配对的一个新例子。
