Spin and charge transport in topological nodal-line semimetals
arXiv:1911.10857 · doi:10.1103/PhysRevB.101.075125
Abstract
We study transport properties of topological Weyl nodal-line semimetals(NLSs). Starting from a minimal lattice model with a single nodal loop, and by focusing on a normal-metal-NLS-normal-metal junction, we investigate the dependence of the novel transport behavior on the orientation of the nodal loop. When the loop is parallel to the junction interfaces, the transmitted current is found to be nearly fully spin-polarized. Correspondingly, there exists a spin orientation, along which the incident electrons would be totally reflected. An unusual resonance of half transmission with the participation of surface states also occurs for a pair of incident electrons with opposite spin orientations. All these phenomena have been shown to originate from the existence of a single forward-propagating mode in the NLS of the junction, and argued to survive in more generic multi-band Weyl NLSs.
12 pages, 11 figures
References in corpus (13)
- Dissipationless Quantum Spin Current at Room Temperature
- Spin Transfer Torques
- Topological Node-Line Semimetal in Three Dimensional Graphene Networks
- Spin current and polarization in impure 2D electron systems with spin-orbit coupling
- On A Proper Definition of Spin Current
- Potential ring of Dirac nodes in a new polymorph of CaP
- Line of Dirac Nodes in Hyper-Honeycomb Lattices
- Unexpected Dirac-Node Arc in the Topological Line-Node Semimetal HfSiS
- Tunable Line Node Semimetals
- Observation of Dirac-like energy band and ring-torus Fermi surface associated with the nodal line in topological insulator CaAgAs
- Spin-transfer torque and spin-polarization in topological-insulator/ferromagnet vertical heterostructures
- Equilibrium spin currents in the Rashba medium
- Electronic Transport Evidence for Topological Nodal-Line Semimetals of ZrGeSe single crystals