Coulomb Blockade Resonances in Quantum Wires
arXiv:cond-mat/9910399 · doi:10.1103/PhysRevB.62.12985
Abstract
The conductance through a quantum wire of cylindrical cross section and a weak bulge is solved exactly for two electrons within the Landauer-Buettiker formalism. We show that this 'open' quantum dot exhibits spin-dependent Coulomb blockade resonances resulting in two anomalous structure on the rising edge to the first conductance plateau, one near 0.25(2e^2/h), related to a singlet resonance, and one near 0.7(2e^2/h), related to a triplet resonance. These resonances are generic and robust, occurring for other types of quantum wire and surviving to temperatures of a few degrees.
5 pages, 3 postscript files with figures; uses REVTeX
References in corpus (2)
Cited by in corpus (23)
- The Low-Temperature Fate of the 0.7 Structure in a Point Contact: A Kondo-like Correlated State in an Open System
- Many-body spin related phenomena in ultra-low-disorder quantum wires
- Conductance of a quantum wire at low electron density
- Local moment formation in quantum point contacts
- What lurks below the last plateau: Experimental studies of the 0.7 x 2e^2/h conductance anomaly in one-dimensional systems
- Spin-dependent thermoelectric transport coefficients in near-perfect quantum wires
- Conductance anomalies in a one-dimensional quantum contact
- Electron-phonon scattering in quantum point contacts
- Spin coupling in zigzag Wigner crystals
- Entanglement between static and flying qubits in a semiconducting carbon nanotube
- Restricted and unrestricted Hartree-Fock calculations of conductance for a quantum point contact
- Entanglement between static and flying qubits in quantum wires
- Ferromagnetic Spin Coupling as the Origin of 0.7 Anomaly in Quantum Point Contacts
- Conductance anomalies and the extended Anderson model for nearly perfect quantum wires
- Evidence for localization and 0.7 anomaly in hole quantum point contacts
- Quantum entanglement generation with surface acoustic waves
- Origins of conductance anomalies in a p-type GaAs quantum point contact
- Shot noise reduction in quantum wires with "0.7 structure"
- Analyzing the measured phase in the multichannel Aharonov-Bohm interferometer
- Influence of Magnetic Moment Formation on the Conductance of Coupled Quantum Wires
- Entanglement and transport anomalies in nanowires
- Large Zeeman Splitting in Out-of-Plane Magnetic Field in a Double-Layer Quantum Point Contact
- Electron Dynamics in a Coupled Quantum Point Contact Structure with a Local Magnetic Moment