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We address the problem of transmission of electrons between two noninteracting leads through a region where they interact (quantum dot). We use a model of spinless electrons hopping on a one-dimensional lattice and with an interaction on a…

介观与纳米尺度物理 · 物理学 2009-11-13 Abhishek Dhar , Diptiman Sen , Dibyendu Roy

We consider a single electron traveling along a strictly one-dimensional quantum wire interacting with another electron in a quantum ring capacitively coupled to the wire. We develop an exact numerical method for treating the scattering…

介观与纳米尺度物理 · 物理学 2016-11-25 M. R. Poniedziałek , B. Szafran

We propose the second-order response of metals in an electric field induced by magnetic impurities which locally break inversion symmetry. The impurities with toroidal moments scatter conduction electrons in the presence of the spin-orbit…

无序系统与神经网络 · 物理学 2022-10-04 Hiroki Isobe , Naoto Nagaosa

We demonstrate that quantum interference of electronic waves that are scattered by multiple magnetic impurities in an s-wave superconductor gives rise to novel bound states. We predict that by varying the inter-impurity distance or the…

强关联电子 · 物理学 2009-11-07 Dirk K. Morr , Nikolaos A. Stavropoulos

We investigate the effect of strong spin-orbit interaction on the electronic transport through non-magnetic impurities in one-dimensional systems. When a perpendicular magnetic field is applied, the electron spin polarization becomes…

材料科学 · 物理学 2007-05-23 R. G. Pereira , E. Miranda

Electron transport through disordered systems that include spin scatterers is studied numerically. We consider three kinds of magnetic impurities: the Ising, the XY and the Heisenberg. By extending the transfer matrix method to include the…

介观与纳米尺度物理 · 物理学 2009-11-10 J. Ohe , M. Yamamoto , T. Ohtsuki

We theoretically investigate the electron transport properties for a semiconductor quantum wire containing a single finite-size attractive impurity under an external terahertz electromagnetic field illumination in the ballistic limit.…

介观与纳米尺度物理 · 物理学 2009-11-11 Guanghui Zhou , Yuan Li , Fang Cheng , Wenfu Liao

We theoretically consider the effects of having unintentional charged impurities in laterally coupled two-dimensional double (GaAs) quantum dot systems, where each dot contains one or two electrons and a single charged impurity in the…

介观与纳米尺度物理 · 物理学 2015-05-27 Nga T. T. Nguyen , S. Das Sarma

We consider an electron magnetically interacting with a spin-1/2 impurity, embedded in an external environment whose noisy term acts only on the impurity's spin, and we find expressions for the electron transmission and reflection…

量子物理 · 物理学 2009-11-13 Alexandra M. Liguori , Giovanni Moras

Altermagnetic superconductors offer the possibility of exploring unconventional superconductivity, including topological states and finite-momentum superconductivity, with promising applications in spintronics and quantum information.…

超导电性 · 物理学 2025-07-22 Andrea Maiani , Rubén Seoane Souto

We consider a finite, disordered 1D quantum lattice with a side-attached impurity. We study theoretically the transport of a single electron from the impurity into the lattice, at zero temperature. The transport is dominated by Anderson…

介观与纳米尺度物理 · 物理学 2018-08-15 Bradley Magnetta , Gonzalo Ordonez , Savannah Garmon

We study the renormalization of a single impurity potential in one-dimensional interacting electron systems in the presence of magnetic field. Using the bosonization technique and Bethe ansatz solutions, we determine the renormalization…

强关联电子 · 物理学 2007-05-23 T. Hikihara , A. Furusaki , K. A. Matveev

A microscopic picture of electron-electron pair scattering in single mode quantum wires is introduced which includes electron spin. A new source of `excess' noise for hot carriers is presented. We show that zero magnetic field `spin'…

凝聚态物理 · 物理学 2009-10-22 Gerhard Fasol , Hiroyuki Sakaki

The existence of robust chiral edge states in a finite topologically nontrivial chern insulator is a consequence of the bulk-boundary correspondence. In this paper, we present a theoretical framework based on lattice Green's function to…

介观与纳米尺度物理 · 物理学 2020-03-25 M. Soltani , M. Amini

A theory for the effect of impurity scattering on electronic Raman scattering in unconventional superconductors is presented. The impurity dependence of the the spectra can be used to to distinguish between conventional (anisotropic…

凝聚态物理 · 物理学 2009-10-22 T. P. Devereaux

In order to probe quantitatively the effect of Kondo impurities on energy exchange between electrons in metals, we have compared measurements on two silver wires with dilute magnetic impurities (manganese) introduced in one of them. The…

介观与纳米尺度物理 · 物理学 2007-08-30 B. Huard , A. Anthore , Norman O. Birge , H. Pothier , D. Esteve

We study the effects of electron-electron interactions on the transport properties of a junction of three quantum wires enclosing a magnetic flux. The wires are modeled as single channel spin-1/2 Tomonaga-Luttinger liquids. The system…

介观与纳米尺度物理 · 物理学 2009-01-22 Chang-Yu Hou , Claudio Chamon

We consider the most energetically favorable symmetry-allowed spin-singlet and spin-triplet superconducting pairing symmetries in monolayer and few-layer graphene, and for each calculate the energy spectrum in the presence of a scalar or…

The charged and magnetic states of isolated impurities dissolved in amorphous metallic alloy are investigated. The Hamiltonian of the system under study is the generalization of Anderson impurity model. Namely, the processes of elastic and…

介观与纳米尺度物理 · 物理学 2013-10-07 G. V. Ponedilok , M. I. Klapchuk

We present a detailed analysis of the Aharonov-Bohm (AB) interference oscillations manifested through transmission of an electron in a mesoscopic ring with a magnetic impurity atom inserted in one of its arms. The spin polarization…

介观与纳米尺度物理 · 物理学 2009-11-07 Sandeep K. Joshi , Debendranath Sahoo , A. M. Jayannavar