Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Energy dependence of quasi-particle relaxation in a disordered Fermi liquid.
AU - Schmidt, T.
AU - König, P.
AU - McCann, E.
AU - Falko, Vladimir I.
AU - Haug, R. J.
N1 - A new method of correlation function spectroscopy has been developed by McCann (and experimentally realised by the Nanostructures group of Haug at Hannover) to measure inelastic lifetime of quasi-particles in disordered conductors at very low excitation energies. RAE_import_type : Journal article RAE_uoa_type : Physics
PY - 2001/1/8
Y1 - 2001/1/8
N2 - A spectroscopic method is applied to measure the inelastic quasiparticle relaxation rate in a disordered Fermi liquid. The quasiparticle relaxation rate g is deduced from the magnitude of fluctuations in the local density of states, which are probed using resonant tunneling through a localized impurity state. We study its dependence on the excitation energy E measured from the Fermi level. In a disordered metal (heavily doped GaAs) we find that g ~ E32 within the experimentally accessible energy interval, in agreement with the Altshuler-Aronov theory for electron-electron interactions in diffusive conductors.
AB - A spectroscopic method is applied to measure the inelastic quasiparticle relaxation rate in a disordered Fermi liquid. The quasiparticle relaxation rate g is deduced from the magnitude of fluctuations in the local density of states, which are probed using resonant tunneling through a localized impurity state. We study its dependence on the excitation energy E measured from the Fermi level. In a disordered metal (heavily doped GaAs) we find that g ~ E32 within the experimentally accessible energy interval, in agreement with the Altshuler-Aronov theory for electron-electron interactions in diffusive conductors.
U2 - 10.1103/PhysRevLett.86.276
DO - 10.1103/PhysRevLett.86.276
M3 - Journal article
VL - 86
SP - 276
EP - 279
JO - Physical review letters
JF - Physical review letters
SN - 1079-7114
IS - 2
ER -