Theory of NMR in semiconductor quantum point contact devices
arXiv:0710.4302 · doi:10.1103/PhysRevB.77.245324
Abstract
We describe how a local non-equilibrium nuclear polarisation can be generated and detected by electrical means in a semiconductor quantum point contact device. We show that measurements of the nuclear spin relaxation rate will provide clear signatures of the interaction mechanism underlying the "0.7" conductance anomaly. Our analysis illustrates how nuclear magnetic resonance methods, which are used extensively to study strongly-correlated electron phases in bulk materials, can be made to play a similarly important role in nanoscale devices.
References in corpus (18)
- Kondo Physics in a Single Electron Transistor
- Possible Spin Polarization in a One-Dimensional Electron Gas
- Landauer Conductance of Luttinger Liquids with Leads
- The Low-Temperature Fate of the 0.7 Structure in a Point Contact: A Kondo-like Correlated State in an Open System
- Spin-charge separation and localization in one-dimension
- Kondo model for the "0.7 anomaly" in transport through a quantum point contact
- Critical Properties of gapped spin-1/2 chains and ladders in a magnetic field
- Conductance of a quantum wire in the Wigner crystal regime
- Density dependent spin polarisation in ultra low-disorder quantum wires
- Magnetic impurity formation in quantum point contacts
- The spin-incoherent Luttinger liquid
- Dynamic nuclear polarization at the edge of a two-dimensional electron gas
- Phenomenological model for the 0.7 conductance feature in quantum wires
- The anomalous 0.5 and 0.7 conductance plateaus in quantum point contacts
- Ferromagnetic correlations in quasi-one-dimensional conducting channels
- Effects of short-range interactions on transport through quantum point contacts: A numerical approach
- Dynamic nuclear polarisation in biased quantum wires with spin-orbit interaction
- Nuclear magnetic resonance probes for the Kondo scenario for the 0.7 feature in semiconductor quantum point contact devices
Cited by in corpus (6)
- Electronic magnetization of a quantum point contact measured by nuclear magnetic resonance
- Nuclear Polarization in Quantum Point Contacts in an In-Plane Magnetic Field
- Dynamic nuclear polarisation in biased quantum wires with spin-orbit interaction
- Dynamic nuclear polarization at high Landau levels in a quantum point contact
- Dipole-like dynamical nuclear spin polarization around a quantum point contact
- Kondo Lattice Scenario in Disordered Semiconductor Heterostructures