Microscopic dynamics of electron hopping in a semiconductor quantum well probed by spin-dependent photon echoes
arXiv:1907.12811 · doi:10.1103/PhysRevB.100.121401
Abstract
Spin-dependent photon echoes in combination with pump-probe Kerr rotation are used to study the microscopic electron spin transport in a CdTe/(Cd,Mg)Te quantum well in the hopping regime. We demonstrate that independent of the particular spin relaxation mechanism, hopping of resident electrons leads to a shortening of the photon echo decay time, while the transverse spin relaxation time evaluated from pump-probe transients increases due to motional narrowing of spin dynamics in the fluctuating effective magnetic field of the lattice nuclei.
11 pages, 8 figures
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