Spontaneous spin polarization in quantum point contacts
arXiv:cond-mat/0509448 · doi:10.1103/PhysRevLett.96.156602
Abstract
We use spatial spin separation by a magnetic focusing technique to probe the polarization of quantum point contacts. The point contacts are fabricated from p-type GaAs/AlGaAs heterostructures. A finite polarization is measured in the low-density regime, when the conductance of a point contact is tuned to <2e^2/h. Polarization is stronger in samples with a well defined ``0.7 structure''
revised discussion and data analysis, accepted to PRL
References in corpus (1)
Cited by in corpus (74)
- Observation of the fractional ac Josephson effect: the signature of Majorana particles
- 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
- Quantized conductance in an AlAs 2D electron system quantum point contact
- Transition from a one-dimensional to a quasi-one-dimensional state in interacting quantum wires
- Electrical generation of pure spin currents in a two-dimensional electron gas
- Exploring Topological Superconductivity in Topological Materials
- Effects of short-range interactions on transport through quantum point contacts: A numerical approach
- Topologically non-trivial valley states in bilayer graphene quantum point contacts
- Probing the microscopic structure of bound states in quantum point contacts
- Transport properties of partially equilibrated quantum wires
- Spin coupling in zigzag Wigner crystals
- Anomalous spin-resolved point-contact transmission of holes due to cubic Rashba spin-orbit coupling
- Localization in an Inhomogeneous Quantum Wire
- Possible origin of the 0.5 plateau in the ballistic conductance of quantum point contacts
- Detection of spin polarized currents in quantum point contacts via transverse electron focusing
- Controlled spatial separation of spins and coherent dynamics in spin-orbit-coupled nanostructures
- Phase and amplitude response of "0.7 feature" caused by holes in silicon one-dimensional wires and rings
- Magnetic focusing of charge carriers from spin-split bands: Semiclassics of a Zitterbewegung effect
- Energy-level pinning and the 0.7 spin state in one dimension: GaAs quantum wires studied using finite-bias spectroscopy
- All-electrical injection and detection of a spin polarized current using 1D conductors
- Conductance of a quantum point contact based on spin-density-functional theory
- Conductance of fully equilibrated quantum wires
- Cyclotron motion and magnetic focusing in semiconductor quantum wells with spin-orbit coupling
- Observation of the Kondo Effect in a Spin-3/2 Hole Quantum Dot
- Bosonization of strongly interacting electrons
- 0.7 Structure and Zero Bias Anomaly in Ballistic Hole Quantum Wires
- Deformed Wigner crystal in a one-dimensional quantum dot
- Transport in partially equilibrated inhomogeneous quantum wires
- Evidence for localization and 0.7 anomaly in hole quantum point contacts
- Conductance Anomaly and Fano Factor Reduction in Quantum Point Contacts
- Equilibrium edge spin currents in two-dimensional electron systems with spin-orbit interaction
- Quantum phase transition in quantum wires controlled by an external gate
- Origins of conductance anomalies in a p-type GaAs quantum point contact
- Interaction-induced corrections to conductance and thermopower in quantum wires
- Interference as a Probe of Spin Incoherence in Strongly Interacting Quantum Wires
- Spin current source based on a quantum point contact with local spin-orbit interaction
- Magnetic breakdown of cyclotron orbits in systems with Rashba and Dresselhaus spin-orbit coupling
- Ferromagnetically coupled magnetic impurities in a quantum point contact
- Electronic transport in inhomogeneous quantum wires
- Direct observation of exchange-driven spin interactions in one-dimensional system
- Magnetic Focussing of Electrons and Holes in the presence of spin orbit interactions
- Fractional quantization of ballistic conductance in 1D hole systems
- Tunable 0.7 conductance plateau in quantum dots
- Signature of spin-resolved quantum point contact in p-type trilayer WSe van der Waals heterostructure
- Temperature Dependence of Spin-Split Peaks in Transverse Electron Focusing
- Magnetic Field Inducing Zeeman Splitting and Anomalous Conductance Reduction of Half-integer Quantized Plateaus in InAs Quantum Wires
- Nanostructures in p-GaAs with improved tunability
- Coherent Spin Amplification Using a Beam Splitter
- Scanning Gate Imaging of quantum point contacts and the origin of the 0.7 Anomaly
- Interference effects and Huygens' principle in transverse magnetic focusing of electrons and holes
- Spin-current quantization in a quantum point contact with spin-orbit interaction
- Gate voltage dependent Rashba spin splitting in hole transverse magnetic focussing
- Temperature Modulation of the Transmission Barrier in Quantum Point Contacts
- Quantised conductance of one-dimensional strongly-correlated electrons in an oxide heterostructure
- Spin polarisation and spin dependent scattering of holes in transverse magnetic focussing
- Majorana fermions in charge carrier hole quantum wires
- Coherent magnetotransport and time-dependent transport through split-gated quantum constrictions
- Conductance quantization and shot noise of a double-layer quantum point contact
- Charge and spin transport in nanoscopic structures with spin-orbit coupling
- Interference in spin-orbit coupled transverse magnetic focusing; emergent phase due to in-plane magnetic fields
- Finite-thickness effect and spin polarization of the even-denominator fractional quantum Hall states
- Dephasing in a quantum dot coupled to a quantum point contact
- Mode-filtered electron injection into a waveguide interferometer
- 0.7-anomaly and magnetotransport of disordered quantum wires
- Nuclear magnetic resonance probes for the Kondo scenario for the 0.7 feature in semiconductor quantum point contact devices
- Detection of spin injection into a double quantum dot: Violation of magnetic-field-inversion symmetry of nuclear polarization instabilities
- Imaging spin-resolved cyclotron trajectories in the InSb two-dimensional electron gas
- Brownian scattering of a spinon in a Luttinger liquid
- Conductance matrix of multi terminal semiconductor devices with edge channels
- Charge transport by modulating spin-orbit gauge fields for quasi-onedimensional holes
- Fractional quantum conductance staircase of edge hole channels in silicon quantum wells
- Spin-valley 0.7 anomaly in bilayer graphene/WSe quantum point contacts
- On-chip quantum sensing of Kondo spins in a high-mobility quasi-one-dimensional nanoconstriction