Fully Tunable Fano Resonances in Chiral Electronic Transport
arXiv:2404.13597 · doi:10.1103/PhysRevB.110.195407
Abstract
Fano resonance is believed to arise when a direct path interferes with a resonant path. We demonstrate that this is not true for chiral electronic transmission without additional direct paths. To address the Fano effect in chiral electronic transport, we suggest an electronic Mach-Zehnder-Fano interferometer (MZFI), which combines a quantum dot with an electronic Mach-Zehnder interferometer. Backscattering is completely suppressed in chiral electronic transport, yielding perfect Fano profiles that can be fully adjusted by an external magnetic flux in the transmission, linear conductance, and differential spectra. Even the current and shot noise for a symmetric interferometer with two arms of the same length exhibit fully controllable resonances and distinct Fano resonance characteristics. Along with the profiles, all of the transport spectra follow the same evolution pattern in a cycle that is resistant to changes in the device's defining parameters.
arXiv comment16 pages, 4 ifgures
References in corpus (30)
- Fano resonances in nanoscale structures
- Shot Noise in Mesoscopic Conductors
- An Electronic Mach-Zehnder Interferometer
- Tuning of the Fano Effect through a Quantum Dot in an Aharonov-Bohm Interferometer
- Fano Resonances in Electronic Transport through a Single Electron Transistor
- Kondo Correlations and the Fano Effect in Closed AB-Interferometers
- Fano Resonance in a Quantum Wire with a Side-coupled Quantum Dot
- Fano and Kondo resonance in electronic current through nanodevices
- Coulomb-Modified Fano Resonance in a One-Lead Quantum Dot
- Energy Relaxation in the Integer Quantum Hall Regime
- Fano resonances as a probe of phase coherence in quantum dots
- Mesoscopic Fano Effect in a Quantum Dot Embedded in an Aharonov-Bohm Ring
- Resonance Lineshapes in Quasi-One-Dimensional Scattering
- Dephasing in the electronic Mach-Zehnder interferometer at filling factor 2
- Finite bias visibility of the electronic Mach-Zehnder interferometer
- Observation of the Fano-Kondo Anti-Resonance in a Quantum Wire with a Side-Coupled Quantum Dot
- Decoherence and single electron charging in an electronic Mach-Zehnder interferometer
- Anti-Kondo resonance in transport through a quantum wire with a side-coupled quantum dot
- Controlled Dephasing of Electrons by Non-Gaussian Shot Noise
- Unexpected finite-bias visibility dependence in an electronic Mach Zehnder interferometer
- Resonant dephasing in the electronic Mach-Zehnder interferometer
- Decoherence and interactions in an electronic Mach-Zehnder interferometer
- Kondo resonances and Fano antiresonances in transport through quantum dots
- Visibility of current and shot noise in electrical Mach-Zehnder and Hanbury Brown Twiss interferometers
- Fano effect in a ring-dot system with tunable coupling
- Kondo and anti-Kondo resonances in transport through nanoscale devices
- Breakdown of `phase rigidity' and variations of the Fano effect in closed Aharonov-Bohm interferometers
- Robust quantum coherence above the Fermi sea
- Controlled dephasing of an electron interferometer with a path detector at equilibrium
- Dephasing in Mach-Zehnder interferometer by an Ohmic contact