94 citations · 481 across the 26 of their papers we have counts for
5 papers · 1 filter
Anisotropic spin relaxation in -GaAs from strong inhomogeneous hyperfine fields produced by the dynamical polarization of nuclei
N. J. Harmon, T. A. Peterson, C. C. Geppert +4
The hyperfine field from dynamically polarized nuclei in n-GaAs is very spatially inhomogeneous, as the nu- clear polarization process is most efficient near the randomly-distribut…
Spin Relaxation in Materials Lacking Coherent Charge Transport
Nicholas J. Harmon, Michael E. Flatté
We describe a broadly-applicable theory of spin relaxation in materials with incoherent charge transport; examples include amorphous inorganic semiconductors, organic semiconductor…
The effects of spin-spin interactions on magnetoresistance in disordered organic semiconductors
N. J. Harmon, M. E. Flatté
A recent theory of magnetoresistance in positionally disordered organic semiconductors is extended to include exchange and dipolar couplings between polarons. Analytic results are…
Semiclassical theory of magnetoresistance in positionally-disordered organic semiconductors
N. J. Harmon, M. E. Flatté
A recently introduced percolative theory of unipolar organic magnetoresistance is generalized by treating the hyperfine interaction semiclassically for an arbitrary hopping rate. C…
Spin-flip induced magnetoresistance in positionally disordered organic solids
N. J. Harmon, M. E. Flatté
A model for magnetoresistance in positionally disordered organic materials is presented and solved using percolation theory. The model describes the effects of spin flips on hoppin…