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We study the band structure and transport properties of ferromagnetic tetragonal silicene nanoribbons by using the non-equilibrium Green's function method. The band structure and spin-dependent conductance are discussed under the combined…

介观与纳米尺度物理 · 物理学 2023-01-04 Liehong Liao , Ying Ding , Fei Wan , Jiayan Zhang , Zhihui Chen , Xinyu Cheng , Ru Bai , Gaofeng Xu , Yuan Li

Experimental realization of two-dimensional boron sheets was reported very recently by Feng et. al. using molecular beam epitaxy on silver (111) surface. These boron sheets possess promising electronic and transport properties. We performed…

介观与纳米尺度物理 · 物理学 2018-10-17 Vivekanand Shukla , Anton Grigoriev , Naresh K. Jena , Rajeev Ahuja

We study the energy spectrum and persistent current of charge carriers confined in a graphene quantum ring geometry of radius $R$ and width $w$ subjected to a magnetic flux. We consider the case where the crystal symmetry is locally…

介观与纳米尺度物理 · 物理学 2021-04-14 Abdelhadi Belouad , Ahmed Jellal , Hocine Bahlouli

The adsorption of thienylenevinylene oligomers on the Si(100) surface has been investigated using scanning tunneling microscopy. The mode of substitution of the thiophene ring exerts a strong influence on the adsorption configurations and…

The current carried by a material subject to an electric field is microscopically inhomogeneous and can be modelled using scattering theory, in which electrons undergo collisions with the microscopic objects they encounter. We herein…

材料科学 · 物理学 2018-10-16 Eleni Chatzikyriakou , Padeleimon Karafiloglou , Joseph Kioseoglou

A self-consistent method for calculating electron transport through a molecular device is proposed. It is based on density functional theory electronic structure calculations under periodic boundary conditions and implemented in the…

介观与纳米尺度物理 · 物理学 2007-05-23 San-Huang Ke , Harold U. Baranger , Weitao Yang

We study transport in three dimensional Weyl semimetals with N isotropic Weyl nodes in the presence of Coulomb interactions or disorder at temperature T. In the interacting clean limit, we determine the conductivity by solving a quantum…

强关联电子 · 物理学 2012-01-26 Pavan Hosur , S. A. Parameswaran , Ashvin Vishwanath

The effect of dephasing on electron transport through a benzene molecule is carefully examined using a phenomenological model introduced by B\"{u}ttiker. Within a tight-binding framework all the calculations are performed based on the…

介观与纳米尺度物理 · 物理学 2011-04-14 Moumita Dey , Santanu K. Maiti , S. N. karmakar

In this letter, we simulate electronic transport through a metal-ferroelectric-metal tunnel junction by use of a nonequilibrium Green's function approach. We show that quantum effects such as Friedel oscillations lead to deviations from the…

其他凝聚态物理 · 物理学 2007-05-23 K. M. Indlekofer , H. Kohlstedt

The magnetization switching of a thin ferromagnetic layer placed on top of a heavy metal (such as Pt, Ta or W) driven by an in-plane current has been observed in recent experiments. The magnetization dynamics of these processes is studied…

材料科学 · 物理学 2015-06-16 G. Finocchio , M. Carpentieri , E. Martinez , B. Azzerboni

The longitudinal transport problem (the current is applied parallel to some bias magnetic field) in type-II superconductors is analyzed theoretically. Based on analytical results for simplified configurations, and relying on numerical…

超导电性 · 物理学 2015-03-17 H. S. Ruiz , C. López , A. Badía-Majós

We examine electronic transport in a spin-blockaded double quantum dot. We show that by tuning the strength of the spin-orbit interaction the current flowing through the double dot exhibits a dip at zero magnetic field or a peak at a…

介观与纳米尺度物理 · 物理学 2015-06-15 G. Giavaras , Neill Lambert , Franco Nori

The exploring and understanding the electronic properties of molecules connected to metallic leads is a vital part of nanoscience if molecule is to have a future. This thesis documents a study for various families of organic and…

计算物理 · 物理学 2016-12-13 Oday A. Al-Owaedi

We investigate the transport of active matter system in the presence of a disordered square lattice of half-circles, which is built by removing a fraction of them from the initial full lattice. We consider no external field. We observe a…

软凝聚态物质 · 物理学 2020-02-12 A. D. Borba , J. L. C. Domingos , E. C. B. Moraes , F. Q. Potiguar , W. P. Ferreira

The interplay between Coulomb interaction and orbital symmetry produces specific transport characteristics in molecular single electron transistors (SET) that can be considered as the fingerprints of the contacted molecule. Specifically we…

介观与纳米尺度物理 · 物理学 2008-07-04 Georg Begemann , Dana Darau , Andrea Donarini , Milena Grifoni

We consider a scattering set-up with an entangler and beam splitter where the current noise exhibits bunching behavior for electronic singlet states and antibunching behavior for triplet states. We show that the entanglement of two…

介观与纳米尺度物理 · 物理学 2022-09-21 Eugene V. Sukhorukov , Daniel Loss , Guido Burkard

The combination of non-trivial topology and superconductivity opens to novel quantum devices. The discovery of intrinsic materials where such properties appear together represents a frontier in modern condensed matter physics. Trigonal…

In connection with the recent Harvard group experiment on graphene-based four-terminal Josephson junctions containing a grounded loop, we consider biasing at opposite voltages on the quartet line and establish lowest-order perturbation…

介观与纳米尺度物理 · 物理学 2021-01-04 Régis Mélin

Motivated by the demand of efficient quantum devices to engineer the energy transport, we analyze some inhomogeneous quantum spin systems, including the XXZ chains, with magnetization baths at the ends. Aimed at finding general properties,…

量子物理 · 物理学 2017-03-29 Emmanuel Pereira

We consider the tunneling current through a double point-contact Fabry-Perot interferometer such as used in recent experimental studies of the fractional quantum Hall plateau at filling fraction nu=5/2. We compare the predictions of several…

介观与纳米尺度物理 · 物理学 2009-10-05 Waheb Bishara , Parsa Bonderson , Chetan Nayak , Kirill Shtengel , J. K. Slingerland