scholarly journals Linear and non-linear transport properties of quantum-dot devices

2021 ◽  
Author(s):  
Luiz Henrique Bugatti Guessi
Keyword(s):  
Quantum Dot ◽  
Transport Properties ◽  
Linear Transport ◽  
Non Linear

Non-linear transport properties of the PbTeGeTe system

1987 ◽  
Vol 62 (7) ◽  
pp. 503-507
Author(s):  
O Valassiades ◽  
E Pavlidou ◽  
N.A Economou
Keyword(s):  
Transport Properties ◽  
Linear Transport ◽  
Non Linear

Transport Properties of Coupled Semiconductor Quantum Dots

2006 ◽  
Vol 6 (11) ◽  
pp. 3329-3332 ◽  
Author(s):  
Heejun Jeong
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Transport Properties ◽  
Electronic Transport ◽  
Low Temperatures ◽  
Spin Interaction ◽  
Many Body ◽  
Conductance Measurement ◽  
Spin Configuration ◽  
Non Linear

We have measured the electronic transport properties of the coupled quantum dot devices at low temperatures. The interplay between the strong many body spin interaction and the molecular states are probed in linear and non-linear transport regime. We observe the formation of strong coherent molecular states clearly visible in the double dot conductance phase diagram. In our study, the spin configuration in multiply coupled quantum dots could be identified using Kondo phenomenon. In addition, the characteristics of the spin dependent molecular states and phase dependant tunneling have been also observed using non-linear conductance measurement of the double dots. The results suggest the importance of the diverse spin related physical issues in artificial quantum dot devices.

scholarly journals RPA APPROACH TO NON-LINEAR TRANSPORT IN QUANTUM DOTS

2009 ◽  
Vol 23 (20n21) ◽  
pp. 4414-4421
Author(s):  
B. TANATAR ◽  
V. MOLDOVEANU
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Random Phase ◽  
Tight Binding ◽  
Polarization Operator ◽  
Approximation Schemes ◽  
Theoretical Treatment ◽  
Gw Approximation ◽  
Linear Transport ◽  
Non Linear

An accurate theoretical treatment of electron-electron interactions in mesoscopic systems is available in very few cases and approximation schemes are developed in most of the applications, especially for many-level quantum dots. Here we present transport calculations within the random-phase approximation for the Coulomb interaction using the Keldysh Green's functions formalism. We describe the quantum dot systems by a tight-binding Hamiltonian. Our method is similar to the one used by Faleev and Stockman [Phys. Rev. B 66 085318 (2002)] in their study of the equilibrium properties of a homogeneous 2D electron gas. The important extension at the formal level is that we combine the RPA and the Keldysh formalism for studying non-linear transport properties of open quantum dots. Within the Keldysh formalism the polarization operator becomes a contour-ordered quantity that should be computed either from the non-interacting Green functions of the coupled quantum dot (the so-called G0W approximation) either self-consistently (GW approximation). We performed both non-selfconsistent and self-consistent calculations and compare the results. In particular we recover the Coulomb diamonds for interacting quantum dots and we discuss the charge sensing effects in parallel quantum dots.

scholarly journals Non linear transport properties of an insulating YBCO nano-bridge

2010 ◽  
Vol 73 (3) ◽  
pp. 361-365 ◽  
Author(s):  
L. Fruchter ◽  
A. Yu Kasumov ◽  
J. Briatico ◽  
A. A. Ivanov ◽  
V. Nicholaichik
Keyword(s):  
Transport Properties ◽  
Linear Transport ◽  
Non Linear

Non-linear transport through a strongly correlated quantum dot

2012 ◽  
Author(s):  
Martin Nuss ◽  
Enrico Arrigoni ◽  
Wolfgang von der Linden
Keyword(s):  
Quantum Dot ◽  
Strongly Correlated ◽  
Linear Transport ◽  
Non Linear

Effects of temperature and Nd composition on non-linear transport properties in substituted Ce1−xNdxO2−δ cerium dioxides

2004 ◽  
Vol 177 (3) ◽  
pp. 856-865 ◽  
Author(s):  
Latifa Aneflous ◽  
Jean A. Musso ◽  
Sylvie Villain ◽  
Jean-Raymond Gavarri ◽  
Houria Benyaich
Keyword(s):  
Transport Properties ◽  
Linear Transport ◽  
Non Linear ◽  
Effects Of Temperature
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