Superconductivity without Inversion Symmetry: MnSi versus CePt3Si
Abstract
Superconductivity in materials without spatial inversion symmetry is studied. We show that in contrast to common belief, spin-triplet pairing is not entirely excluded in such systems. Moreover, paramagnetic limiting is analyzed for both spin-singlet and -triplet pairing. The lack of inversion symmetry reduces the effect of the paramagnetic limiting for spin-singlet pairing. These results are applied to MnSi and CePt3Si.
- Publication:
-
Physical Review Letters
- Pub Date:
- March 2004
- DOI:
- 10.1103/PhysRevLett.92.097001
- arXiv:
- arXiv:cond-mat/0311354
- Bibcode:
- 2004PhRvL..92i7001F
- Keywords:
-
- 74.20.-z;
- 71.18.+y;
- Theories and models of superconducting state;
- Fermi surface: calculations and measurements;
- effective mass g factor;
- Condensed Matter - Strongly Correlated Electrons;
- Condensed Matter - Superconductivity
- E-Print:
- 5 pages, 2 figures, an errata has been added to the end of the paper