Ferromagnetic correlations in quasi-one-dimensional conducting channels

Abstract

We propose a model which explains the experimental observation of spontaneous spin polarization of conducting electrons in quasi- one-dimensional GaAs/AlGaAs channels. We show that a ferromagnetic order is a generic property of a quasi-one-dimensional conducting channel embedded in a Wigner crystal. We also discuss gate voltage, magnetic field and temperature dependences of the channel's conductance.

18 pages, 3 figures included

References in corpus (3)

• Electronic Liquid Crystal Phases of a Doped Mott Insulator
• Interaction Effects in a One-Dimensional Constriction
• Temperature dependence of the ``0.7'' 2(e^2)/h quasi plateau in strongly confined quantum point contacts

Cited by in corpus (34)

• The Low-Temperature Fate of the 0.7 Structure in a Point Contact: A Kondo-like Correlated State in an Open System
• Bias and temperature dependence of the 0.7 conductance anomaly in Quantum Point Contacts
• Density dependent spin polarisation in ultra low-disorder quantum wires
• Spontaneous spin polarization in quantum point contacts
• Conductance of a quantum wire at low electron density
• Local moment formation in quantum point contacts
• Wigner crystal physics in quantum wires
• What lurks below the last plateau: Experimental studies of the 0.7 x 2e^2/h conductance anomaly in one-dimensional systems
• The anomalous 0.5 and 0.7 conductance plateaus in quantum point contacts
• Wigner and Kondo physics in quantum point contacts revealed by scanning gate microscopy
• Conductance anomalies in a one-dimensional quantum contact
• Electron-phonon scattering in quantum point contacts
• Transport properties of partially equilibrated quantum wires
• Spin coupling in zigzag Wigner crystals
• Spontaneous Spin Polarization in Quantum Wires
• Energy-level pinning and the 0.7 spin state in one dimension: GaAs quantum wires studied using finite-bias spectroscopy
• Spin Depolarization in Quantum Wires Polarized Spontaneously in a Zero Magnetic Field
• Resistivity of inhomogeneous quantum wires
• Non-Kondo zero-bias anomaly in quantum wires
• 0.7 Structure and Zero Bias Anomaly in Ballistic Hole Quantum Wires
• Restricted and unrestricted Hartree-Fock calculations of conductance for a quantum point contact
• Transport in partially equilibrated inhomogeneous quantum wires
• Ferromagnetic Spin Coupling as the Origin of 0.7 Anomaly in Quantum Point Contacts
• Conductance quantization in etched Si/SiGe quantum point contacts
• 1/N-expansion for the Dicke model and the decoherence program
• Equilibration of Luttinger liquid and conductance of quantum wires
• Interstitial-induced ferromagnetism in a two-dimensional Wigner crystal
• Electronic transport in inhomogeneous quantum wires
• Charge rearrangement and screening in a quantum point contact
• Quantum LC circuits with charge discreteness: normal and anomalous spectrum
• Theory of NMR in semiconductor quantum point contact devices
• Enhancement mechanism of the electron g-factor in quantum point contacts
• Nuclear magnetic resonance probes for the Kondo scenario for the 0.7 feature in semiconductor quantum point contact devices
• Transmission-phase of an electron in a quantum point contact