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We investigate the Fano-type spectroscopic lineshapes of the T-shape double quantum dot coupled between the conducting and superconducting electrodes and analyze their stability on a decoherence. Because of the proximity effect the quantum…

介观与纳米尺度物理 · 物理学 2012-06-01 J. Baranski , T. Domanski

In the presence of direct trajectories connecting source and drain contacts, the conductance of a quantum dot may exhibit resonances of the Fano type. Since Fano resonances result from the interference of two transmission pathways, their…

介观与纳米尺度物理 · 物理学 2009-10-31 A. A. Clerk , X. Waintal , P. W. Brouwer

We investigate low-temperature transport characteristics of a side-coupled double quantum dot where only one of the dots is directly connected to the leads. We observe Fano resonances, which arise from interference between discrete levels…

介观与纳米尺度物理 · 物理学 2015-05-14 S. Sasaki , H. Tamura , T. Akazaki , T. Fujisawa

We investigate a tunable Fano interferometer consisting of a quantum dot coupled via tunneling to a one-dimensional channel. In addition to Fano resonance, the channel shows strong Coulomb response to the dot, with a single electron…

介观与纳米尺度物理 · 物理学 2009-11-10 A. C. Johnson , C. M. Marcus , M. P. Hanson , A. C. Gossard

In this paper, the Coulomb-induced changes of Fano interference in electronic transport through a double quantum dot Aharonov-Bohm ring are discussed. It is found that the Coulomb interaction in the quantum dot in the reference channel can…

介观与纳米尺度物理 · 物理学 2015-05-14 Weijiang Gong , Xuefeng Xie , Guozhu Wei

We study the interference between the Fano and Kondo effects in a side-coupled double-quantum- dot system where one of the quantum dots couples to conduction electron bath while the other dot only side-couples to the first dot via…

介观与纳米尺度物理 · 物理学 2015-05-18 Chung-Hou Chung , Tsung-Han Lee

Electron transport through parallel double quantum dot system with interdot tunneling and strong on-site Coulomb interaction is studied in the Kondo regime by using the finite-$U$ slave boson technique. For a system of quantum dots with…

介观与纳米尺度物理 · 物理学 2009-11-10 Guo-Hui Ding , C. K. Kim , K. Nahm

We report a transport experiment on the Fano effect in a quantum connecting wire (QW) with a side-coupled quantum dot (QD). The Fano resonance occurs between the QD and the "T-shaped" junction in the wire, and the transport detects…

介观与纳米尺度物理 · 物理学 2009-11-10 Kensuke Kobayashi , Hisashi Aikawa , Akira Sano , Shingo Katsumoto , Yasuhiro Iye

Conductance through a system consisting of a wire with side-attached quantum dots is calculated. Such geometry of the device allows to study the coexistence of quantum interference, electron correlations and their influence on conductance.…

介观与纳米尺度物理 · 物理学 2009-11-10 Piotr Stefanski

We analyze the influence of a local pairing on the quantum interference in nanoscopic systems. As a model system we choose the double quantum dot coupled to one metallic and one superconducting electrode in the T-shape geometry. The…

介观与纳米尺度物理 · 物理学 2020-04-10 Jan Barański , Tomasz Zienkiewicz , Magdalena Barańska , Konrad Jerzy Kapcia

Electronic transport through a quantum dot strongly coupled to electrodes is studied within a model with two conduction channels. It is shown that multiple scattering and interference of transmitted waves through both channels lead to Fano…

介观与纳米尺度物理 · 物理学 2009-11-07 Bogdan R. Bulka , Piotr Stefanski

The transmission probability and phase through a few-electron quantum dot are studied within a resonance theory for the strong coupling regime to the conducting leads. We find that the interaction between overlapping resonances leads to…

介观与纳米尺度物理 · 物理学 2011-05-09 E. R. Racec

The Fano resonance in quantum dots embedded in Aharonov-Bohm rings is examined theoretically, using two models of non-interacting electrons. The first model yields an analytical expression for the conductance G. G is written in an extended…

介观与纳米尺度物理 · 物理学 2015-06-24 Akiko Ueda , Ikuo Baba , Keita Suzuki , Mikio Eto

We study the Aharonov-Bohm effect in a coupled 2$\times$2 quantum dot array with two-terminals. A striking conductance dip arising from the Fano interference is found as the energy levels of the intermediate dots are mismatched, which is…

介观与纳米尺度物理 · 物理学 2009-11-07 Z. Y. Zeng , F. Claro , Alejandro Pérez

We study the zero-bias conductance through the system of two quantum dots, one of which is embedded directly between the source and drain electrodes, while the second dot is side-coupled to the first one through a tunneling junction.…

介观与纳米尺度物理 · 物理学 2010-08-10 Rok Zitko

We investigate the Fano-Kondo interplay in an Aharonov-Bohm ring with an embedded non-interacting quantum dot and a Coulomb interacting quantum dot. Using a slave-boson mean-field approximation we diagonalize the Hamiltonian via scattering…

介观与纳米尺度物理 · 物理学 2015-06-12 R. R. Agundez , J. Verduijn , S. Rogge , M. Blaauboer

We analyze a quantum dot strongly coupled to the conducting leads via quantum point contacts - Fano regime of transport - and report a variety of resonant states which demonstrate the dominance of the interacting resonances in the…

介观与纳米尺度物理 · 物理学 2010-08-18 E. R. Racec , U. Wulf , P. N. Racec

The Fano effect, which occurs through the quantum-mechanical cooperation between resonance and interference, can be observed in electron transport through a hybrid system of a quantum dot and an Aharonov-Bohm ring. While a clear correlation…

介观与纳米尺度物理 · 物理学 2016-08-31 Kensuke Kobayashi , Hisashi Aikawa , Shingo Katsumoto , Yasuhiro Iye

We investigate a lateral semiconductor quantum dot with a large number of electrons in the semi-open Fano regime. In transport measurements we observe three stable series of Fano resonances with similar lineshapes. We present a simple model…

介观与纳米尺度物理 · 物理学 2007-05-23 C. Fuhner , U. F. Keyser , R. J. Haug , D. Reuter , A. D. Wieck

Fano lineshapes in resonant transmission in a quantum dot imply interference between localized and extended states. The influence of the charge accumulated at the localized levels, which screens the external gate voltage acting on the…

介观与纳米尺度物理 · 物理学 2009-11-11 Piotr Stefanski , Arturo Tagliacozzo , Bogdan R. Bulka
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