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相关论文: Possible Manipulation of Kondo Effect by Transitio…

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We investigate the effects induced by spin polarization in the contacts attached to a serial double quantum dot. The polarization generates effective magnetic fields and suppresses the Kondo effect in each dot. The super-exchange…

介观与纳米尺度物理 · 物理学 2012-06-14 Rok Žitko , Jong Soo Lim , Rosa Lopez , Jan Martinek , Pascal Simon

We propose that a simple device of three laterally-coupled quantum dots, the central one contacted by metal leads, can realize the ferromagnetic Kondo model, which is characterized by interesting properties like a non-analytic inverted…

强关联电子 · 物理学 2013-07-25 Pier Paolo Baruselli , Ryan Requist , Michele Fabrizio , Erio Tosatti

We present a careful and thorough microscopic derivation of the Kondo Hamiltonian for single-molecule magnets (SMMs) transistors. When the molecule is strongly coupled to metallic leads, we show that by applying a transverse magnetic field…

强关联电子 · 物理学 2009-11-13 Gabriel Gonzalez , Michael N. Leuenberger , Eduardo R. Mucciolo

The Kondo effect originates from the spin exchange scattering of itinerant electrons with a localized magnetic impurity. Here, we consider generalization of Weyl-type electrons with their spin locked on a spherical Fermi surface in an…

介观与纳米尺度物理 · 物理学 2025-12-19 Kinari Goto , Yusuke Nishida

We investigate the Kondo effect of a spin-3/2 Fermi gas and give a detailed calculation of the impurity resistance and ground state energy based on the s-d exchange model. It is found that the impurity resistance increases logarithmically…

量子气体 · 物理学 2026-03-16 Bei Xu , Shoufa Sun , Qiang Gu

We study the T=0 Kondo physics of a spin-1/2 impurity in a non-centrosymmetric metal with spin-orbit interaction. Within a simple variational approach we compute ground state properties of the system for an {\it arbitrary} form of…

强关联电子 · 物理学 2012-02-23 L. Isaev , D. F. Agterberg , I. Vekhter

We study the spin-resolved transport through single-level quantum dots strongly coupled to ferromagnetic leads in the Kondo regime, with a focus on contact and material asymmetry-related effects. By using the numerical renormalization group…

介观与纳米尺度物理 · 物理学 2015-06-12 K. P. Wojcik , I. Weymann , J. Barnas

The Kondo effect arises from many-body interactions between localized magnetic impurities and conduction electrons, affecting electronic properties at low temperatures. In this study, we investigate the Kondo effect within a two-dimensional…

强关联电子 · 物理学 2025-09-30 T. O. Puel , M. A. Manya , G. S. Diniz , E. Vernek , G. B. Martins

Using a state-of-the art combination of density functional theory and impurity solver techniques we present a complete and parameter-free picture of the Kondo effect in the high-spin ($S=3/2$) coordination complex known as Manganese…

介观与纳米尺度物理 · 物理学 2015-06-17 D. Jacob , M. Soriano , J. J. Palacios

We study the fate of a spin-1/2 impurity in the itinerant antiferromagnetic metallic phase via a renormalization group analysis and a variational calculation. The local moment - conduction electron interaction hamiltonian in an…

强关联电子 · 物理学 2008-06-05 Vivek Aji , Chandra Varma , Ilya Vekhter

We consider a band of fermions in two space dimensions with a flux phase (relativistic) dispersion relation coupled to a local magnetic impurity via an $ s-d$ interaction. This model describes spinons of a flux phase and it is also a…

凝聚态物理 · 物理学 2009-10-28 Carlos R. Cassanello , Eduardo Fradkin

Motivated by recent theoretical and experimental advances in quantum simulations using alkaline earth(AE) atoms, we put forward a proposal to detect the Kondo physics in a cold atomic system. It has been demonstrated that the intrinsic…

量子气体 · 物理学 2021-08-10 Yanting Cheng , Xin Chen , Ren Zhang

Magnetic and charge susceptibilities in the Kondo lattice are derived by the continuous-time quantum Monte Carlo (CT-QMC) method combined with the dynamical mean-field theory. For a weak exchange coupling J and near half filling of the…

强关联电子 · 物理学 2009-03-18 Junya Otsuki , Hiroaki Kusunose , Yoshio Kuramoto

The interplay between the Kondo effect and the inter-dot magnetic interaction in a coupled-dot system is studied. An exact result for the transport properties at zero temperature is obtained by diagonalizing a cluster, composed by the…

强关联电子 · 物理学 2009-10-31 C. A. Büsser , E. V. Anda , A. L Lima , Maria A. Davidovich , G. Chiappe

The magnetic coupling between single Co atoms adsorbed on a copper surface is determined by probing the Kondo resonance using low-temperature scanning tunneling spectroscopy. The Kondo resonance, which is due to magnetic correlation effects…

强关联电子 · 物理学 2007-05-23 P. Wahl , P. Simon , L. Diekhoener , V. S. Stepanyuk , P. Bruno , M. A. Schneider , K. Kern

The Kondo effect is a striking consequence of the coupling of itinerant electrons to a quantum spin with degenerate energy levels. While degeneracies are commonly thought to arise from symmetries or fine-tuning of parameters, the recent…

介观与纳米尺度物理 · 物理学 2012-10-11 B. Béri , N. R. Cooper

The breakdown of the Kondo effect may be the origin of the anomalous properties of the heavy-fermion compounds at low temperatures. We study the dynamics of one impurity embedded in an antiferromagnetic host at the quantum critical point…

强关联电子 · 物理学 2009-10-31 D. Controzzi

We study the Kondo effect in a quantum dot which is coupled to ferromagnetic leads and analyse its properties as a function of the spin polarization of the leads. Based on a scaling approach we predict that for parallel alignment of the…

介观与纳米尺度物理 · 物理学 2007-05-23 J. Martinek , Y. Utsumi , H. Imamura , J. Barnas , S. Maekawa , J. König , G. Schön

The Kondo effect in coupled quantum dots is investigated theoretically under magnetic fields. We show that the magnetoconductance (MC) illustrates peak structures of the Kondo resonant spectra. When the dot-dot tunneling coupling $V_C$ is…

介观与纳米尺度物理 · 物理学 2007-05-23 Tomosuke Aono , Mikio Eto

We consider the transport properties in an applied magnetic field of the spin S=1/2 Kondo model with ferromagnetic exchange coupling to electronic reservoirs, a description relevant for the strong coupling limit of underscreened spin S=1…

介观与纳米尺度物理 · 物理学 2013-07-15 Mathias Cabrera Cano , Serge Florens
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