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We analyze the anomalies of superconducting state (s and d-wave pairing) in a simple model of pseudogap state, induced by fluctuations of short - range order (e.g. antiferromagnetic), based on the model Fermi surface with "hot patches". We…

超导电性 · 物理学 2009-10-31 E. Z. Kuchinskii , M. V. Sadovskii

Electron spectrum of 2D and 3D antiferromagnetic metals is calculated with account of spin-fluctuation corrections within perturbation theory in the s-f exchange model. Effects of the interaction of conduction electrons with spin waves in…

强关联电子 · 物理学 2009-10-31 V. Yu. Irkhin , M. I. Katsnelson

We performed measurements at helium temperatures of the electronic transport in an InAs quantum wire ($R_{wire} \sim 30$\,k$\Omega$) in the presence of a charged tip of an atomic force microscope serving as a mobile gate. The period and the…

介观与纳米尺度物理 · 物理学 2013-09-17 A. A. Zhukov , Ch. Volk , A. Winden , H. Hardtdegen , Th. Schaepers

Molecular electronics is a fascinating area of research with the ability to tune device properties by a chemical tailoring of organic molecules. However, molecular electronics devices often suffer from dispersion and lack of reproducibility…

介观与纳米尺度物理 · 物理学 2013-02-11 Nicolas Clement , David Guerin , Stephane Pleutin , Sylvie Godey , Dominique Vuillaume

Charge migration along DNA molecules has attracted scientific interest for over half a century. Reports on possible high rates of charge transfer between donor and acceptor through the DNA, obtained in the last decade from solution…

材料科学 · 物理学 2009-11-10 Danny Porath , Gianaurelio Cuniberti , Rosa Di Felice

We study the electrical and transport properties of monoatomic Mo wires with different structural characteristics. We consider first periodic wires with inter-atomic distances ranging between the dimerized wire to that formed by equidistant…

介观与纳米尺度物理 · 物理学 2010-02-09 A. García-Fuente , A. Vega , V. M. García-Suárez , J. Ferrer

Electron interactions are pivotal for defining the electronic structure of quantum materials. In particular, the strong electron Coulomb repulsion is considered the keystone for describing the emergence of exotic and/or ordered phases of…

We report a detailed analytic and numerical study of electronic thermal conductivity in d-wave superconductors. We compare theory of the cross over at low temperatures from T-dependence to T^3-dependence for increasing temperature with…

超导电性 · 物理学 2009-11-11 Tomas Lofwander , Mikael Fogelstrom

We establish the dominant effect of anisotropic weak localization (WL) in three dimensions associated with a propagative Fermi surface, on the conductivity correction in heavily nitrogen doped ultrananocrystalline diamond (UNCD) films based…

介观与纳米尺度物理 · 物理学 2010-11-25 Kunjal V Shah , Dmitry Churochkin , Zivayi Chiguvare , Somnath Bhattacharyya

We describe here a minimal theory of tight binding electrons moving on the square planar Cu lattice of the hole-doped cuprates and mixed quantum mechanically with pairs of them (Cooper pairs). Superconductivity occurring at the transition…

强关联电子 · 物理学 2013-05-29 Sumilan Banerjee , T V Ramakrishnan , C Dasgupta

Temperature dependent transport of disordered electronic systems is examined in the presence of strong correlations. In contrast to what is assumed in Fermi liquid approaches, finite temperature behavior in this regime proves largely…

强关联电子 · 物理学 2007-05-23 M. C. O. Aguiar , E. Miranda , V. Dobrosavljevic , E. Abrahams , G. Kotliar

In this work we investigate the electronic transport along model DNA molecules using an effective tight-binding approach that includes the backbone on site energies. The localization length and participation number are examined as a…

介观与纳米尺度物理 · 物理学 2015-06-11 C. J. Páez , P. A. Schulz

In-situ transmission electron microscopy (TEM) has become an important technique to study dynamic processes at highest spatial resolution and one branch is the investigation of phenomena related with electrical currents. Here, we present…

介观与纳米尺度物理 · 物理学 2025-11-13 Simon Hettler , Raul Arenal

Where, and how, does energy dissipation of electrical energy take place in a ballistic wire? Fully two decades after the advent of the transmissive phenomenology of electrical conductance, this deceptively simple query remains unanswered.…

介观与纳米尺度物理 · 物理学 2009-01-06 Mukunda P. Das , Frederick Green

Physics based numerical simulation has been carried out to probe the sub-gap density of states (DOS) and underlying electron transport properties of amorphous oxide based thin film transistors (TFTs). The DOS model of TFTs consists of…

应用物理 · 物理学 2024-02-15 D. Saha , Sachin Kulkarni

We study the dynamics of the quantum phase distribution associated with the reduced density matrix of a system for a number of situations of practical importance, as the system evolves under the influence of its environment, interacting via…

量子物理 · 物理学 2009-11-13 Subhashish Banerjee , R. Srikanth

The electron transport through the parabolic quantum wire placed in longitudinal magnetic field in the presence of the system of short-range impurities inside the wire is investigated. Using approach based on the zero-range potential theory…

介观与纳米尺度物理 · 物理学 2008-01-03 I. A. Kokurin , V. A. Margulis

Linear temperature dependence of transport coefficients in metals is often ascribed to non-Fermi-liquid physics. Here we demonstrate the $T$-linear behavior of nonlocal conductivity in a clean 2D electron fluid, where carrier collisions…

介观与纳米尺度物理 · 物理学 2025-02-11 Serhii Kryhin , Qiantan Hong , Leonid Levitov

We study the electronic transport in a molecular junction in which each site is coupled to a local phonon bath using the non-equilibrium Green's function method. We observe the length period of the oscillatory conductance in odd-numbered…

强关联电子 · 物理学 2011-08-12 Ya-Lin Lo , Shih-Jye Sun , Ying-Jer Kao

Results on the superconductor to insulator transition in two-dimensional films are analyzed in terms of coupling of the system to a dissipative bath. Upon lowering the temperature the parameter that controls this coupling becomes relevant…

超导电性 · 物理学 2009-10-31 N. Mason , A. Kapitulnik