TY - JOUR
T1 - Role of the chemical bonding for the time-dependent electron transport through an interacting quantum dot
AU - Goker, Ali
AU - Zhu, Zhiyong
AU - Manchon, Aurelien
AU - Schwingenschlögl, Udo
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2011/6
Y1 - 2011/6
N2 - A combination of ab initio and many-body calculations is utilized to determine the effects of the bonding in Au electrodes on the time dependent current through a quantum dot suddenly shifted into the Kondo regime by a gate voltage. For an asymmetrically coupled system the instantaneous conductance exhibits fluctuations. The frequencies of the fluctuations turn out to be proportional to the energetic separation between the dominating peaks in the density of states and the Fermi level. The chemical bonding in the electrodes, thus, drastically alters the transient current, which can be accessed by ultrafast pump-probe techniques. © 2011 Elsevier B.V. All rights reserved.
AB - A combination of ab initio and many-body calculations is utilized to determine the effects of the bonding in Au electrodes on the time dependent current through a quantum dot suddenly shifted into the Kondo regime by a gate voltage. For an asymmetrically coupled system the instantaneous conductance exhibits fluctuations. The frequencies of the fluctuations turn out to be proportional to the energetic separation between the dominating peaks in the density of states and the Fermi level. The chemical bonding in the electrodes, thus, drastically alters the transient current, which can be accessed by ultrafast pump-probe techniques. © 2011 Elsevier B.V. All rights reserved.
UR - http://hdl.handle.net/10754/561789
UR - https://linkinghub.elsevier.com/retrieve/pii/S0009261411005306
UR - http://www.scopus.com/inward/record.url?scp=79957756365&partnerID=8YFLogxK
U2 - 10.1016/j.cplett.2011.04.086
DO - 10.1016/j.cplett.2011.04.086
M3 - Article
SN - 0009-2614
VL - 509
SP - 48
EP - 50
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 1-3
ER -