The theory of the "0.7 anomaly" in quantum point contacts

Abstract

The phenomenology of the "0.7 anomaly" in quantum point contacts is fully explained in terms of a quasi-localized state, which forms as the point contact opens up. Detailed numerical calculations within spin-density functional theory indeed con rm the emergence of such a state. Quantitative calculations of the conductance and the noise are obtained using a model based on these observations, and are in excellent agreement with existing experimental observations.

A summary paper, to be included in JPCM Special Issue on 0.7 Feature

References in corpus (2)

• Magnetic impurity formation in quantum point contacts
• Suppression of Shot Noise in Quantum Point Contacts in the "0.7" Regime

Cited by in corpus (2)

• Ferromagnetic Spin Coupling as the Origin of 0.7 Anomaly in Quantum Point Contacts
• Functional Renormalization Group Approach for Inhomogeneous One-Dimensional Fermi Systems with Finite-Ranged Interactions