Single Electron Transport in electrically tunable nanomagnets

Details Single Electron Transport in electrically tunable nanomagnets Single Electron Transport in electrically tunable nanomagnets

2006-04-19

arxiv.org/abs/cond-mat/0604437v2

Phys. Rev. Lett. 98, 106805 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4.3 pages, 3 figures. Revised version. Accepted for publication in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.98.106805

We study a single electron transistor (SET) based upon a II-VI semiconductor quantum dot doped with a single Mn ion. We present evidence that this system behaves like a quantum nanomagnet whose total spin and magnetic anisotropy depend dramatically both on the number of carriers and their orbital nature. Thereby, the magnetic properties of the nanomagnet can be controlled electrically. Conversely, the electrical properties of this SET depend on the quantum state of the Mn spin, giving rise to spin-dependent charging energies and hysteresis in the Coulomb blockade oscillations of the linear conductance.

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