5 papers
Effects of strain, electric, and magnetic fields on lateral electron spin transport in semiconductor epilayers
M. Hruska, S. Kos, S. A. Crooker +2
We construct a spin-drift-diffusion model to describe spin-polarized electron transport in zincblende semiconductors in the presence of magnetic fields, electric fields, and off-di…
Different regimes of Forster energy transfer between an epitaxial quantum well and a proximal monolayer of semiconductor nanocrystals
S. Kos, M. Achermann, V. I. Klimov +1
We calculate the rate of non-radiative, Forster-type energy transfer (ET) from an excited epitaxial quantum well (QW) to a proximal monolayer of semiconductor nanocrystal quantum d…
Broken particle-hole symmetry at atomically flat a-axis YBa2Cu3O7-d interfaces
Bruce A. Davidson, Revaz Ramazashvili, Simon Kos +1
We have studied quasiparticle tunneling into atomically flat a-axis films of YBa2Cu3O7-d and DyBa2Cu3O7-d through epitaxial CaTiO3 barriers. The junction heterostructures were grow…
Specific heat at the transition in a superconductor with fluctuating magnetic moments
Simon Kos, Ivar Martin, C. M. Varma
In the heavy-fermion materials CeCoIn and UBe, the superconducting order parameter is coupled to flucutating magnetization of the uncompensated part of the localized …
Gaussian fluctuation corrections to the BCS mean field gap amplitude at zero temperature
S. Kos, A. J. Millis, A. I. Larkin
The leading (Gaussian) fluctuation correction to the weak coupling zero temperature BCS superconducting gap equation is computed. We find that the dominant contribution comes from…