收稿日期: 2013-05-23
修回日期: 2013-05-27
网络出版日期: 2014-03-15
基金资助
Supported by Scientific Research Fund of UCAS(Y25102BN00)
Parity mixing effects in noncentrosymmetric superconductors：specific heat and spin susceptibility
Received date: 2013-05-23
Revised date: 2013-05-27
Online published: 2014-03-15
Supported by
Supported by Scientific Research Fund of UCAS(Y25102BN00)
余东洋 , 陈崇巨 , 金彪 . 非中心对称超导体的序参量宇称混合效应：比热与自旋磁化率[J]. 中国科学院大学学报, 2014 , 31(2) : 165 -170 . DOI: 10.7523/jssn.2095-6134.2014.02.004
In materials with no spatial inversion symmetry, the antisymmetric spin-orbit coupling can cause an admixture of the spin-singlet and spin-triplet pairings. We study the influence of the spin-orbit coupling and the degree of parity mixing on the specific heat and spin susceptibility of such superconductors, with a particular emphasis on the heavy fermion superconductor CePt3Si. Results compatible with experimental findings are obtained.
[1] Bauer E, Hilscher G, Michor H, et al. Heavy fermion superconductivity and magnetic order in noncentrosymmetric CePt3Si[J]. PRL, 2004, 92: 027003.
[2] Bauer E, Sigrist M. Non-centrosymmetric superconductors[C]//Berglbock W. Lecture Notes in Physics. Springer-Heidelberg Dordrecht London New York: Springer, 2012.
[3] Samokhin K V, Zijlstra E S, Bose S K. CePt3Si: An unconventional superconductor without inversion center[J]. PRB, 2004, 69: 094514.
[4] Samokhin K V. Gap structure in noncentrosymmetric superconductors[J]. PRB, 2008, 77: 104520.
[5] Frigeri P A, Agterberg D F, Koga A, et al. Superconductivity without inversion symmetry: MnSi versus CePt3Si[J]. PRL, 2004, 92: 097001.
[6] Samokhin K V. NMR relaxation rate in noncentrosymmetric superconductors[J]. PRB, 2005, 72: 054514.
[7] Yogi M, Kitaoka Y, Hashimoto S, et al. Evidence for a novel state of superconductivity in noncentrosymmetric CePt3Si: a Pt195-NMR study[J]. PRL, 2004, 93: 027003.
[8] Izawa K, Kasahara Y, Matsuda Y, et al. Line nodes in the superconducting gap function of noncentrosymmetric CePt3Si[J]. PRL, 2005, 94: 197002.
[9] Bonalde I, Brämer-Escamilla W, Bauer E. Evidence for line nodes in the superconducting energy gap of noncentrosymmetric CePt3Si from magnetic penetration depth measurements[J]. PRL, 2005, 94: 207002.
[10] Ribeiro R L, Bonalde I, Haga Y, et al. Magnetic penetration depth and gap symmetry of the noncentrosymmetric superconductors CePt3Si and LaPt3Si[J]. JPSJ, 2009, 78: 115002.
[11] Takeuchi T, Tsujinoc M, Yasudac T, et al. Specific heat study on the heavy fermion superconductor CePt3Si[J]. JMMM, 2007, 310: 557.
[12] Scheidt E W, Mayr F, Eickerling G, et al. Double specific heat anomaly of the superconducting state of CePt3Si[J]. Journal of Physics: Condensed Matter, 2005, 17: L121.
[13] Yogi M, Mukuda H, Kitaoka Y, et al. Evidence for novel pairing state in noncentrosymmetric superconductor CePt3Si: Si29-NMR knight shift study[J]. JPSJ, 2006, 75: 013709.
[14] Frigeri P A, Agterberg D F, Sigrist M. Spin susceptibility in superconductors without inversion symmetry[J]. New Journal of Physics, 2004, 6: 115.
[15] Yanase Y, Sigrist M. Non-centrosymmetric superconductivity and antiferromagnetic order: microscopic discussion of CePt3Si[J]. JPSJ, 2007, 76: 043712.
[16] Samokhin K V. Spin susceptibility of noncentrosymmetric superconductors[J]. PRB, 2007, 76: 094516.
[17] Samokhin K V, Mineev V P. Gap structure in noncentrosymmetric superconductors[J]. PRB, 2008, 77: 104520.
[18] Eremin I, Annett J F. Magnetic field dependence of the superconducting gap node topology in noncentrosymmetric CePt3Si[J]. PRB, 2006, 74: 184524.
[19] Mukuda H, Nishide S, Harada A, et al. Multiband superconductivity in heavy fermion compound CePt3Si without inversion symmetry: an NMR study on a high-quality single crystal[J]. JPSJ, 2009, 78: 014705.
[20] Nakatsuji K, Sumiyama A, Oda Y, et al. nuki double superconducting transition of CePt3Si probed by susceptibility measurements[J]. JPSJ, 2006, 75: 084717.
[21] Motoyama G, Maeda K, Oda Y. Specific heat study of magnetic and superconducting transitions in CePt3Si[J]. JPSJ, 2008, 77: 044710.
[22] Mukuda H, Ohara T, Yashima T M, et al. Spin susceptibility of noncentrosymmetric heavy-fermion superconductor CeIrSi3[J]. PRL, 2010, 104: 017002.
/
| 〈 |
|
〉 |
