TY - JOUR
T1 - Coulomb drag in coherent mesoscopic systems
AU - Mortensen, Niels Asger
AU - Flensberg, Karsten
AU - Jauho, Antti-Pekka
N1 - Paper id:: http://dx.doi.org/10.1103/PhysRevLett.86.1841
PY - 2001
Y1 - 2001
N2 - We present a theory for Coulomb drag between two mesoscopic systems. Our formalism expresses the drag in terms of scattering matrices and wave functions, and its range of validity covers both ballistic and disordered systems. The consequences can be worked out either by analytic means, such as the random matrix theory, or by numerical simulations. We show that Coulomb drag is sensitive to localized states, which usual transport measurements do not probe. For chaotic 2D systems we find a vanishing average drag, with a nonzero variance. Disordered 1D wires show a finite drag, with a large variance, giving rise to a possible sign change of the induced current.
AB - We present a theory for Coulomb drag between two mesoscopic systems. Our formalism expresses the drag in terms of scattering matrices and wave functions, and its range of validity covers both ballistic and disordered systems. The consequences can be worked out either by analytic means, such as the random matrix theory, or by numerical simulations. We show that Coulomb drag is sensitive to localized states, which usual transport measurements do not probe. For chaotic 2D systems we find a vanishing average drag, with a nonzero variance. Disordered 1D wires show a finite drag, with a large variance, giving rise to a possible sign change of the induced current.
M3 - Journal article
SN - 0031-9007
VL - 86
SP - 1841
EP - 1844
JO - Physical Review Letters
JF - Physical Review Letters
IS - 9
ER -