Single Spin Transport Spectroscopy - Current Blockade and Spin Decay

Abstract

We present a theory of a single-electron transistor exchange-coupled to a localized spin. We show how to gain detailed quantitative knowledge about the attached spin such as spin size, exchange coupling strength, Landé g-factor, and spin decay time $T_1$ by utilizing a robust blockade phenomenon of DC magnetotransport with accompanying noise enhancement. Our studies are of particular relevance to spin-resolved scanning single-electron transistor microscopy, electronic transport through nanomagnets, and the effect of hyperfine interaction on transport electrons by surrounding nuclear spins.

4 pages, 2 figures, revised version

References in corpus (5)

• Single-shot read-out of an individual electron spin in a quantum dot
• Full counting statistics of super-Poissonian shot noise in multi-level quantum dots
• Preservation of Positivity by Dynamical Coarse-Graining
• A Non-Demolition Single Spin Meter
• Spin Lifetimes in Quantum Dots from Noise Measurements