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We study localization effects in Josephson junctions with two superconductors connected by a strongly disordered metallic wire of length $L$. The conventional description of the Josephson effect in such systems, based on the quasiclassical…

介观与纳米尺度物理 · 物理学 2025-03-21 Mustafa E. Ismagambetov , Aleksey V. Lunkin , Pavel M. Ostrovsky

Impurities and defects are ubiquitous in topological insulators (TIs) and thus understanding the effects of disorder on electronic transport is important. We calculate the distribution of the random conductance fluctuations $P(G)$ of…

介观与纳米尺度物理 · 物理学 2018-03-14 Hsiu-Chuan Hsu , Ioannis Kleftogiannis , Guang-Yu Guo , Victor A. Gopar

We report an unconventional temperature dependence of the resistivity in several strongly correlated systems approaching a localized to itinerant electronic transition from the itinerant electron side. The observed resistivity, proportioanl…

强关联电子 · 物理学 2009-11-10 F. Rivadulla , J. -S. Zhou , J. B. Goodenough

Electronic transport properties of the disordered quantum wires are considered. The disorder is introduced via impurities (point scatterers), distributed uniformly over the two-dimensional strip, which represents a model quantum wire.…

介观与纳米尺度物理 · 物理学 2014-12-31 Robert Gębarowski

We study the hopping transport of a quantum particle through randomly diluted percolation clusters in two dimensions realized both on the square and triangular lattices. We investigate the nature of localization of the particle by…

无序系统与神经网络 · 物理学 2007-09-27 Md Fhokrul Islam , Hisao Nakanishi

London penetration depth, $\lambda(T)$, was measured in single crystals of SrFe$_2$(As$_{1-x}$P$_x$)$_2$ ($x=$0.35) iron - based superconductor. The influence of disorder on the transition temperature, $T_c$, and on $\lambda(T)$ was…

We theoretically investigate the magnitude and range of the photon-mediated interaction between two quantum dots embedded in a photonic crystal waveguide, including fabrication disorder both in the crystal and in the dot positioning. We…

介观与纳米尺度物理 · 物理学 2013-08-20 Momchil Minkov , Vincenzo Savona

In this work we theoretically study steady state thermoelectric transport through a single-molecule junction with a long chain-like bridge. Electron transmission through the system is computed using a tight-binding model for the bridge. We…

介观与纳米尺度物理 · 物理学 2018-03-02 Natalya A. Zimbovskaya , Abraham Nitzan

We study the thermoelectric transport properties in the three-dimensional Anderson model of localization near the metal-insulator transition [MIT]. In particular, we investigate the dependence of the thermoelectric power S, the thermal…

无序系统与神经网络 · 物理学 2009-10-31 C. Villagonzalo , R. A. Roemer , M. Schreiber

We examined the characteristics of a metal-insulator transition on a two-dimensional non-bipartite lattice when both disorders and electron interactions are present. Using a real-space renormalization group method and finite-size scaling…

强关联电子 · 物理学 2007-05-23 Jiaxiang Wang , Sabre Kais

We compute both electron- and phonon transmissions in thin disordered silicon nanowires. Our atomistic approach is based on tight-binding and empirical potential descriptions of the electronic and phononic systems, respectively. Surface…

介观与纳米尺度物理 · 物理学 2009-11-13 Troels Markussen , Antti-Pekka Jauho , Mads Brandbyge

A novel feature of electron transport is explored through a thin film of varying impurity density with the distance from its surface. The film, attached to two metallic electrodes, is described by simple tight-binding model and its coupling…

介观与纳米尺度物理 · 物理学 2009-09-15 Santanu K. Maiti

Motivated by recent advances in the realization of Truchet-tiling structures in molecular networks and metal-organic frameworks, we investigate the wave localization issue in this kind of structure. We introduce an electron model based on…

无序系统与神经网络 · 物理学 2025-05-08 Junmo Jeon , Shiro Sakai

We study the spreading of initially localized excitations in 1D disordered granular crystals. We thereby investigate localization phenomena in strongly nonlinear systems, which we demonstrate to be fundamentally different from localization…

无序系统与神经网络 · 物理学 2016-02-17 Alejandro J. Martínez , P. G. Kevrekidis , Mason A. Porter

We investigate theoretically the simultaneous tunneling of two electrons from a superconductor into a normal metal at low temperatures and voltages. Such an emission process is shown to be equivalent to the Andreev reflection of an incident…

介观与纳米尺度物理 · 物理学 2009-11-10 E. Prada , F. Sols

We develop a linear theory of electron transport for a system of two identical quantum wires in a wide range of the wire length L, unifying both the ballistic and diffusive transport regimes. The microscopic model, involving the interaction…

介观与纳米尺度物理 · 物理学 2009-10-31 O. E. Raichev , P. Vasilopoulos

We present computational data on the thermal conductivity of nonlinear waves in disordered chains. Disorder induces Anderson localization for linear waves and results in a vanishing conductivity. Cubic nonlinearity restores normal…

统计力学 · 物理学 2015-05-27 Sergej Flach , Mikhail Ivanchenko , Nianbei Li

Quantum transport properties through some multilevel quantum dots sandwiched between two metallic contacts are investigated by the use of Green's function technique. Here we do parametric calculations, based on the tight-binding model, to…

介观与纳米尺度物理 · 物理学 2009-11-06 Santanu K. Maiti

In a tight binding framework, we analyze the characteristics of electronic states in strongly disordered materials (hopping sites are placed randomly with no local order) with tunneling matrix elements decaying exponentially in the atomic…

材料科学 · 物理学 2012-02-01 D. J. Priour

We compute the transport properties of one dimensional interacting electrons, also known as a Luttinger liquid. We show that a renormalization group study allows to obtain the temperature dependence of the conductivity in an intermediate…

强关联电子 · 物理学 2015-06-24 T. Giamarchi , T. Nattermann , P. Le Doussal