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A theory of the Kondo effect in quantum dots at zero temperature in the presence of arbitrary intense AC potentials is presented.We generalize the Friedel-Langreth sum rule to take care of charge conservation and propose a consistent…

Strongly Correlated Electrons · Physics 2009-10-31 Rosa Lopez , Ramon Aguado , Gloria Platero , Carlos Tejedor

We propose a model of the Kondo effect based on the Anti-de Sitter/Conformal Field Theory (AdS/CFT) correspondence, also known as holography. The Kondo effect is the screening of a magnetic impurity coupled anti-ferromagnetically to a bath…

High Energy Physics - Theory · Physics 2015-06-17 Johanna Erdmenger , Carlos Hoyos , Andy O'Bannon , Jackson Wu

We study the Kondo effect in a CNT(left lead)-CNT(QD)-CNT(right lead) structure. Here CNT is a single-wall metallic carbon nanotube, for which 1) the valence and conduction bands of electrons with zero orbital angular momentum ($m=0$)…

Strongly Correlated Electrons · Physics 2014-05-14 Igor Kuzmenko , Yshai Avishai

The Kondo zero bias anomaly of Co adatoms probed by scanning tunneling microscopy is known to depend on the height of the tip above the surface, and this dependence is different on different low index Cu surfaces. On the (100) surface, the…

Strongly Correlated Electrons · Physics 2019-07-24 P. P. Baruselli , R. Requist , A. Smogunov , M. Fabrizio , E. Tosatti

We present a theoretical study for the scanning tunneling microscopy (STM) spectra of surface-supported magnetic nanostructures, incorporating strong correlation effects. As concrete examples, we study Co and Mn adatoms on the Cu(111)…

Strongly Correlated Electrons · Physics 2016-03-22 Hung T. Dang , Manuel dos Santos Dias , Ansgar Liebsch , Samir Lounis

The Anderson impurity model is studied by means of the self-consistent hybridization expansions in its non-crossing (NCA) and one-crossing (OCA) approximations. We have found that for the one-channel spin-$1/2$ particle-hole symmetric…

Strongly Correlated Electrons · Physics 2016-09-21 C. N. Sposetti , L. O. Manuel , P. Roura-Bas

We discuss the physics of a of a spin-1 quantum dot, coupled to two metallic leads and develop a simple model for the temperature dependence of its conductance. Such quantum dots are described by a two-channel Kondo model with asymmetric…

Strongly Correlated Electrons · Physics 2007-08-15 Anna Posazhennikova , Babak Bayani , P. Coleman

Quantum scattering calculations for strongly interacting molecular systems are computationally demanding due to the large number of molecular states coupled by the anisotropy of atom - molecule interactions. We demonstrate that thermal rate…

Chemical Physics · Physics 2026-01-06 Xuyang Guo , Kirk W. Madison , James L. Booth , Roman V. Krems

Based on the experimental observation, that only the close vicinity of a magnetic impurity at metal surfaces determines its Kondo behaviour, we introduce a simple model which explains the Kondo temperatures observed for cobalt adatoms at…

Strongly Correlated Electrons · Physics 2009-11-10 P. Wahl , L. Diekhöner , M. A. Schneider , L. Vitali , G. Wittich , K. Kern

Neutralization probabilities are presented for hyperthermal energy Na+ ions scattered from a Cu(001) crystal as a function of surface temperature and scattered velocity. A large enhancement in neutralization is observed as the temperature…

Condensed Matter · Physics 2009-11-07 C. E. Sosolik , J. R. Hampton , A. C. Lavery , B. H. Cooper , J. B. Marston

The Kondo effect describes the scattering of conduction electrons by magnetic impurities, manifesting as an electronic resonance at the Fermi energy with a distinctive temperature evolution. In this letter, we present a critical evaluation…

The effects of finite temperature in transport through nanoscopic systems exhibiting uniaxial magnetic anisotropy D, such as molecular magnets, adatoms, or quantum dots side-coupled to a large spin are analyzed in the Kondo regime. The…

Mesoscale and Nanoscale Physics · Physics 2015-06-05 Maciej Misiorny , Ireneusz Weymann , Józef Barnaś

The topological Kondo effect arises when conduction electrons in metallic leads are coupled to a mesoscopic superconducting island with Majorana fermions. Working with its minimal setup, we study the lead electron local tunneling density of…

Mesoscale and Nanoscale Physics · Physics 2018-12-03 A. Latief , B. Béri

The effect of surface atom vibrations for H$_2$ scattering from a Cu(111) surface at different temperatures is being investigated for hydrogen molecules in their rovibrational ground state ($v$=0, $j$=0). We assume weakly correlated…

Other Condensed Matter · Physics 2021-05-04 Joy Dutta , Souvik Mandal , Satrajit Adhikari , Paul Spiering , Jörg Meyer , Mark F. Somers

Accurate numerical results are derived for transport properties of Kondo impurity systems with potential scattering and orbital degeneracy. Using the continuous-time quantum Monte Carlo (CT-QMC) method, static and dynamic physical…

Strongly Correlated Electrons · Physics 2015-07-30 Annamaria Kiss , Yoshio Kuramoto , Shintaro Hoshino

We investigate the Kondo effect in a quantum dot with almost degenerate spin-singlet and triplet states for an even number of electrons. We show that the Kondo temperature as a function of the energy difference between the states Delta…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Mikio Eto , Yuli V. Nazarov

The Kondo effect is a many-body phenomenon allowing insight into the electronic and atomistic structure of spin-polarized adsorbates on metal surfaces. Its chemical control is intriguing because it deepens such insight, but the underlying…

Strongly Correlated Electrons · Physics 2019-05-01 Marc Philipp Bahlke , Peter Wahl , Lars Diekhöner , Carmen Herrmann

A quantum Monte Carlo simulation method has been developed and applied to study the critical behavior of a single Kondo impurity in a Luttinger liquid. This numerically exact method has no finite-size limitations and allows to simulate the…

Strongly Correlated Electrons · Physics 2009-10-30 Reinhold Egger , Andrei Komnik

Electron scattering off an Anderson impurity immersed in the bulk of a 3D topological insulator is studied in the strong coupling regime, where the temperature $T$ is lower than the Kondo temperature $T_K$. The system displays either a…

Strongly Correlated Electrons · Physics 2016-03-04 Igor Kuzmenko , Tetyana Kuzmenko , Yshai Avishai , Tai Kai Ng

In this work high-dimensional (21D) quantum dynamics calculations on mode-specific surface scattering of a carbon monoxide molecule on a copper (100) surface with lattice effects of a five-atom surface cell are performed through the…

Chemical Physics · Physics 2021-03-10 Qingyong Meng , Markus Schroeder , Hans-Dieter Meyer