TY - JOUR
T1 - Transmission through quantum dots
T2 - Focus on phase lapses
AU - Golosov, D. I.
AU - Gefen, Yuval
PY - 2006
Y1 - 2006
N2 - Measurements of the transmission phase in transport through a quantum dot embedded in an Aharonov-Bohm interferometer show systematic sequences of phase lapses separated by Coulomb peaks. Using a two-level quantum dot as an example we show that this phenomenon can be accounted for by the combined effect of asymmetric dot-lead coupling and interaction-induced "population switching" of the levels, rendering this behavior generic. In addition, we use the notion of spectral shift function to analyze the relationship between transmission phase lapses and the Friedel sum rule.
AB - Measurements of the transmission phase in transport through a quantum dot embedded in an Aharonov-Bohm interferometer show systematic sequences of phase lapses separated by Coulomb peaks. Using a two-level quantum dot as an example we show that this phenomenon can be accounted for by the combined effect of asymmetric dot-lead coupling and interaction-induced "population switching" of the levels, rendering this behavior generic. In addition, we use the notion of spectral shift function to analyze the relationship between transmission phase lapses and the Friedel sum rule.
UR - http://www.scopus.com/inward/record.url?scp=33750992445&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.74.205316
DO - 10.1103/PhysRevB.74.205316
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:33750992445
SN - 1098-0121
VL - 74
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 20
M1 - 205316
ER -