Atomic configuration controlled photocurrent in van der Waals homostructures
arXiv:2011.08864 · doi:10.1088/2053-1583/abe762
Abstract
Conventional photocurrents at a p-n junction depend on macroscopic built-in fields and are typically insensitive to the microscopic details of a crystal's atomic configuration. Here we demonstrate how atomic configuration can control photocurrent in van der Waals (vdW) materials. In particular, we find bulk shift photocurrents (SPC) can display a rich (atomic) configuration dependent phenomenology that range from contrasting SPC currents for different stacking arrangements in a vdW homostructure (e.g., AB vs BA stacking) to a strong light polarization dependence for SPC that align with crystallographic axes. Strikingly, we find that SPC in vdW homostructures can be directed by modest strain, yielding sizeable photocurrent magnitudes under unpolarized light irradiation and manifesting even in the absence of p-n junctions. These demonstrate that SPC are intimately linked to how the Bloch wavefunctions are embedded in real space, and enables a new macroscopic transport probe (photocurrent) of lattice-scale registration in vdW materials.
References in corpus (38)
- Van der Waals heterostructures
- Magic-angle graphene superlattices: a new platform for unconventional superconductivity
- Correlated Insulator Behaviour at Half-Filling in Magic Angle Graphene Superlattices
- Bandgap Engineering of Strained Monolayer and Bilayer MoS2
- Landau level degeneracy and quantum Hall effect in a graphite bilayer
- Moiré Excitons in Van der Waals Heterostructures
- Observation of Moiré Excitons in WSe2/WS2 Heterostructure Superlattices
- The electronic properties of bilayer graphene
- Hot Carrier-Assisted Intrinsic Photoresponse in Graphene
- Resonantly hybridised excitons in moiré superlattices in van der Waals heterostructures
- Atomic and electronic reconstruction at van der Waals interface in twisted bilayer graphene
- Determination of band alignment in the single layer MoS2/WSe2 heterojunction
- First principles calculations of the Shift Current Bulk Photovoltaic Effect in Ferroelectrics
- Large and tunable photo-thermoelectric effect in single-layer MoS2
- Moiré excitons: from programmable quantum emitter arrays to spin-orbit coupled artificial lattices
- Strain Solitons and Topological Defects in Bilayer Graphene
- Topological nature of nonlinear optical effects in solids
- Ab Initio Theory of Gate Induced Gaps in Graphene Bilayers
- Photoconductivity of biased graphene
- Dual-gated bilayer graphene hot electron bolometer
- Electronic properties of the MoS2-WS2 heterojunction
- Electronic structures and optical properties of realistic transition metal dichalcogenide heterostructures from first principles
- Gate-activated photoresponse in a graphene p-n junction
- Valley Chern Numbers and Boundary Modes in Gapped Bilayer Graphene
- Photonic crystals for nano-light in moiré graphene superlattices
- Probing the Electronic Structure of Bilayer Graphene by Raman Scattering
- Determination of the gate-tunable bandgap and tight-binding parameters in bilayer graphene using infrared spectroscopy
- Topological mosaic in Moiré superlattices of van der Waals heterobilayers
- Existence and topological stability of Fermi points in multilayered graphene
- Photo-thermoelectric and photoelectric contributions to light detection in metal-graphene-metal photodetectors
- Strained bilayer graphene: Band structure topology and Landau level spectrum
- Topological Bloch Bands in Graphene Superlattices
- Near-field photocurrent nanoscopy on bare and encapsulated graphene
- Electron quantum metamaterials in van der Waals heterostructures
- Parity and valley degeneracy in multilayer graphene
- Nonlinear photocurrents in two-dimensional systems based on graphene and boron nitride
- Nano-photocurrent mapping of local electronic structure in twisted bilayer graphene
- Engineering of the topological magnetic moment of electrons in bilayer graphene using strain and electrical bias
Cited by in corpus (8)
- Photocurrent as a multi-physics diagnostic of quantum materials
- Roadmap for Photonics with 2D Materials
- Higher vortexability: zero field realization of higher Landau levels
- Nonlinear optical responses and quantum geometry in rhombohedral trilayer graphene
- Unveiling the Miniband Structure of Graphene Moiré Superlattices via Gate-dependent Terahertz Photocurrent Spectroscopy
- Nonlinear bulk photocurrent probe Z2 topological phase transition
- Giant Shift Current in Electrically-Tunable Superlattice Bilayer Graphene
- Enabling the bulk photovoltaic effect in centrosymmetric materials through an external electric field