Signature of superconducting states in cubic crystal without inversion symmetry
| dc.creator | Lu, Chi-Ken | |
| dc.creator | Yip, Sungkit | |
| dc.date | 2007-11-06 | |
| dc.date.accessioned | 2026-07-07T09:24:11Z | |
| dc.date.available | 2026-07-07T09:24:11Z | |
| dc.description | The effects of absence of inversion symmetry on superconducting states are investigated theoretically. In particular we focus on the noncentrosymmetric compounds which have the cubic symmetry $O$ like Li$_2$Pt$_3$B. An appropriate and isotropic spin-orbital interaction is added in the Hamiltonian and it acts like a magnetic monopole in the momentum space. The consequent pairing wavefunction has an additional triplet component in the pseudospin space, and a Zeeman magnetic field $\bf{B}$ can induce a collinear supercurrent $\bf{J}$ with a coefficient $κ(T)$. The effects of anisotropy embedded in the cubic symmetry and the nodal superconducting gap function on $κ(T)$ are also considered. From the macroscopic perspectives, the pair of mutually induced $\bf{J}$ and magnetization ${\bf{M}}$ can affect the distribution of magnetic field in such noncentrosymmetric superconductors, which is studied through solving the Maxwell equation in the Meissner geometry as well as the case of a single vortex line. In both cases, magnetic fields perpendicular to the external ones emerge as a signature of the broken symmetry. | |
| dc.description | 16 pages in pre-print format | |
| dc.identifier | https://arxiv.org/abs/0711.0800 | |
| dc.identifier | http://arxiv.org/abs/0711.0800 | |
| dc.identifier | Physical Review B 77 054515 (2008) | |
| dc.identifier | doi:10.1103/PhysRevB.77.054515 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/156004 | |
| dc.subject | Superconductivity | |
| dc.title | Signature of superconducting states in cubic crystal without inversion symmetry | |
| dc.type | text |