2 papers
cond-mat.dis-nn2003
'Taxonomy' of Electron Glasses
N. P. Armitage, E. Helgren, G. Gruner
We report measurements of the real and imaginary parts of the AC conductivity in the quantum limit, \hbar ω> k_B T of insulating nominally uncompensated n-type silicon. The observe…
cond-mat.dis-nn2001
Electrons on the double helix: optical experiments on native DNA
E. Helgren, G. Gruner, A. Omerzu +3
Optical experiments on calf thymus DNA films subjected to different buffer environments are reported. The optical conductivity is that of a disordered or lightly doped semiconducto…