Possibility of Coexistence of Ferromagnetism and Superconductivity in an Anisotropic Quasi-Two-Dimensional System
ZHOU Yuan1, LI Jun1, GONG Chang-De1,2
1National Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093
2CCAST (World Laboratory), PO Box 8730, Beijing 100080
Possibility of Coexistence of Ferromagnetism and Superconductivity in an Anisotropic Quasi-Two-Dimensional System
ZHOU Yuan1;LI Jun1;GONG Chang-De1,2
1National Key Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093
2CCAST (World Laboratory), PO Box 8730, Beijing 100080
Abstract： Possibility of coexistence of ferromagnetism (FM) and superconductivity (SC) in UGe2 based on a two-parameter model in an anisotropic quasi-two-dimensional system is discussed with both singlet s-wave and triplet p-wave SCs. It is emphasized that the coexistence of FM and singlet s-wave SC is energetically high among all possible states, while the coexistence of FM and triplet p-wave SC is energetically favourable among all possible states. Furthermore, we find that the magnetization dependence of the SC energy gap is nonmonotonic, which may explain the experimental result discovered in UGe2 .
(Inhomogeneous superconductors and superconducting systems, including electronic inhomogeneities)
引用本文:
ZHOU Yuan;LI Jun;GONG Chang-De;. Possibility of Coexistence of Ferromagnetism and Superconductivity in an Anisotropic Quasi-Two-Dimensional System[J]. 中国物理快报, 2004, 21(9): 1805-1807.
ZHOU Yuan, LI Jun, GONG Chang-De,. Possibility of Coexistence of Ferromagnetism and Superconductivity in an Anisotropic Quasi-Two-Dimensional System. Chin. Phys. Lett., 2004, 21(9): 1805-1807.
2004, Vol. 21 
