Photocurrent and photoconductance of an helical edge state
arXiv:1904.07815 · doi:10.1103/PhysRevB.100.245412
Abstract
We consider the helical edge state of a Quantum Spin Hall insulator, connected between two leads, and irradiated by a monochromatic and circularly polarized electromagnetic wave. The photocurrent generated within the helical edge state is studied as function of the characteristics of the electromagnetic radiation and electronic doping of the edge state. We focus on the effect of the leads on the photocurrent. We also investigate the photoconductance of the helical edge state in presence of a voltage bias between the leads.
9 pages, 7 figures
References in corpus (15)
- Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
- Quantum Spin Hall Insulator State in HgTe Quantum Wells
- Classification of topological insulators and superconductors in three spatial dimensions
- Quantum Spin Hall Effect and Topological Field Effect Transistor in Two-Dimensional Transition Metal Dichalcogenides
- Photovoltaic Hall effect in graphene
- Topological characterization of periodically-driven quantum systems
- Observation of the Quantum Spin Hall Effect up to 100 Kelvin in a Monolayer Crystal
- Quantum Spin Hall Effect in Inverted Type II Semiconductors
- The Helical Liquid and the Edge of Quantum Spin Hall Systems
- Irradiated graphene as a tunable Floquet topological insulator
- Multiterminal Conductance of a Floquet Topological Insulator
- Topological index for periodically driven time-reversal invariant 2D systems
- The chiral anomaly in real space
- Photoexcitation of electron wave packets in quantum spin Hall edge states: effects of chiral anomaly from a localised electric pulse
- Ballistic transport through irradiated graphene