Multitip scanning gate microscopy for ballistic transport studies in systems with two-dimensional electron gas
arXiv:1503.01908 · doi:10.1103/PhysRevB.91.205314
Abstract
We consider conductance mapping of systems based on the two-dimensional electron gas with scanning gate microscopy using two and more tips of the atomic force microscope. The paper contains results of numerical simulations for a model tip potential with a proposal of a few procedures for extraction and manipulation the ballistic transport properties. In particular, we demonstrate that the multi-tip techniques can be used for readout of the Fermi wavelength, detection of potential defects, filtering specific transverse modes, tuning the system into resonant conditions under which a stable map of a local density of states can be extracted from conductance maps using a third tip.
9 pages, 12 figures
References in corpus (27)
- Kwant: a software package for quantum transport
- Coherent Branched Flow in a Two-Dimensional Electron Gas
- Imaging Magnetic Focusing of Coherent Electron Waves
- Spatially resolved manipulation of single electrons in quantum dots using a scanned probe
- On the imaging of electron transport in semiconductor quantum structures by scanning-gate microscopy: successes and limitations
- Imaging a Single-Electron Quantum Dot
- Imaging Electron Wave Functions Inside Open Quantum Rings
- Imaging Coulomb Islands in a Quantum Hall Interferometer
- Electron interferometer formed with a scanning probe tip and quantum point contact
- Transport inefficiency in branched-out mesoscopic networks: An analog of the Braess paradox
- Local Density of States in Mesoscopic Samples from Scanning Gate Microscopy
- What is measured in the scanning gate microscopy of a quantum point contact?
- Theory of scanning gate microscopy
- Measurement of the Tip-Induced Potential in Scanning Gate Experiments
- Imaging a 1-electron InAs quantum dot in an InAs/InP nanowire
- Imaging and manipulating electrons in a 1D quantum dot with Coulomb blockade microscopy
- Persistent enhancement of the carrier density in electron irradiated InAs nanowires
- Simulations of imaging of the local density of states by charged probe technique for resonant cavities
- Scanning Gate Spectroscopy of transport across a Quantum Hall Nano-Island
- Braess paradox at the mesoscopic scale
- Scanning-gate-induced effects and spatial mapping of a cavity
- Scanned gate microscopy of a one-dimensional quantum dot
- Resonant electron tunneling in a tip-controlled potential landscape
- Locally induced quantum interference in scanning gate experiments
- Imaging of double slit interference by scanning gate microscopy
- Wave function description of conductance mapping for quantum Hall electron interferometer
- Conductance microscopy of quantum dots weakly or strongly coupled to the conducting channel