Long Range Coherent Manipulation of Nuclear Spins in Quantum Hall Ferromagnet

Details Long Range Coherent Manipulation of Nuclear Spins in Quantum Hall Ferromagnet Long Range Coherent Manipulation of Nuclear Spins in Quantum Hall Ferromagnet

2003-03-19

arxiv.org/abs/cond-mat/0303394v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 1 figure

Scientific paper

A coherent superposition of many nuclear spin states can be prepared and manipulated via the hyperfine interaction with the electronic spins by varying the Landau level filling factor through the gate voltage in appropriately designed Quantum Hall Ferromagnet. During the manipulation periods the 2D electron system forms spatially large Skyrmionic spin textures, where many nuclear spins follow locally the electron spin polarization. It is shown that the collective spin rotation of a single spin texture is gapless in the limit of zero Zeeman splitting, and may dominate the nuclear spins relaxation and decoherence processes in the quantum well.

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