Results 41 to 50 of about 190,120 (192)

Laser-irradiated Kondo insulators: Controlling the Kondo effect and topological phases [PDF]

Physical Review B, 2017
We theoretically investigate the nature of laser-irradiated Kondo insulators. Using Floquet theory and slave boson approach, we study a periodic Anderson model and derive an effective model which describes the laser-irradiated Kondo insulators. In this model, we find two generic effects induced by laser light.
Takasan, Kazuaki, Nakagawa, Masaya, Kawakami, Norio   +2 more
openaire   +2 more sources

Breakdown of the scaling relation of anomalous Hall effect in Kondo lattice ferromagnet USbTe

Nature Communications, 2023
The interaction between strong correlation and Berry curvature is an open territory of in the field of quantum materials. Here we report large anomalous Hall conductivity in a Kondo lattice ferromagnet USbTe which is dominated by intrinsic Berry ...
Hasan Siddiquee, Christopher Broyles, Erica Kotta, Shouzheng Liu, Shiyu Peng, Tai Kong, Byungkyun Kang, Qiang Zhu, Yongbin Lee, Liqin Ke, Hongming Weng, Jonathan D. Denlinger, L. Andrew Wray, Sheng Ran   +13 more
doaj   +1 more source

Engineering the Kondo and Fano effects in double quantum dots

, 2009
We demonstrate delicate control over the Kondo effect and its interplay with quantum interference in an Aharonov-Bohm interferometer containing one Kondo dot and one noninteracting dot.
A. C. Hewson, Hong-Gang Luo, L. Kouwenhoven, M. Grobis, Tie-Feng Fang   +4 more
core   +1 more source

Tunable Kondo screening length at a Y-junction of three inhomogeneous spin chains

Nuclear Physics B, 2020
We derive the topological Kondo Hamiltonian describing a Y junction of three XX-spin chains connected to outer quantum Ising chains with different tilting angles for the Ising axis.
Domenico Giuliano, Andrea Nava, Pasquale Sodano   +2 more
doaj   +1 more source

Nonequilibrium Kondo effect by equilibrium numerical renormalization group method: The hybrid Anderson model subject to a finite spin bias

, 2018
We investigate Kondo correlations in a quantum dot with normal and superconducting electrodes, where a spin bias voltage is applied across the device and the local interaction $U$ is either attractive or repulsive.
Fang, Tie-Feng, Guo, Ai-Min, Sun, Qing-Feng   +2 more
core   +1 more source

Kondo Effect in Dirac Systems [PDF]

Journal of the Physical Society of Japan, 2015
We investigate the Kondo effect in Dirac systems, where Dirac electrons interact with the localized spin via the s-d exchange coupling. The Dirac electron in solid state has the linear dispersion and is described typically by the Hamiltonian such as $H_k= v{\bf k}\cdot $ for the wave number ${\bf k}$ where $ _j$ are Pauli matrices.
openaire   +2 more sources

Kondo effect in crossed Luttinger liquids

, 1999
We study the Kondo effect in two crossed Luttinger liquids, using Boundary Conformal Field Theory. We predict two types of critical behaviors: either a two-channel Kondo fixed point with a nonuniversal Wilson ratio, or a new theory with an anomalous ...
A. Furusaki, A. Komnik, A. Thess, A. Yacoby, A.M. Sengupta, A.M. Tsvelik, D.G. Clarke, D.H. Lee, F.D.M. Haldane, H.J. Schulz, I. Affleck, I. Affleck, I. Affleck, I. Affleck, I. Affleck, J. Voit, J. Ye, K. Le Hur, K. Totsuka, Karyn Le Hur, M. Fabrizio, M. Fabrizio, M. Granath, M. Granath, N. Andrei, P. Durganandini, P. Fröjdh, P. Fröjdh, P. Goddard, P. Goddard, Ph. Nozières, S. Iijima, S. Tarucha, V.A. Fateev, V.J. Emery, Y. Wang   +35 more
core   +1 more source

Analysis of the Kondo effect in ferromagnetic atomic-sized contacts [PDF]

, 2012
Atomic contacts made of ferromagnetic metals present zero-bias anomalies in the differential conductance due to the Kondo effect. These systems provide a unique opportunity to perform a statistical analysis of the Kondo parameters in nanostructures since
A. A. Abrikosov, A. C. Hewson, C. Untiedt, D. Jacob, H. Suhl, M. R. Calvo   +5 more
core   +3 more sources

Self-Doping and the Mott-Kondo Scenario for Infinite-Layer Nickelate Superconductors

Frontiers in Physics, 2022
We give a brief review of the Mott-Kondo scenario and its consequence in the recently-discovered infinite-layer nickelate superconductors. We argue that the parent state is a self-doped Mott insulator and propose an effective t- J-K model to account for ...
Yi-feng Yang, Yi-feng Yang, Yi-feng Yang, Guang-Ming Zhang, Guang-Ming Zhang   +4 more
doaj   +1 more source

SU(4) and SU(2) Kondo Effects in Carbon Nanotube Quantum Dots

, 2007
We study the SU(4) Kondo effect in carbon nanotube quantum dots, where doubly degenerate orbitals form 4-electron ``shells''. The SU(4) Kondo behavior is investigated for one, two and three electrons in the topmost shell.
A. C. Hewson, A. Makarovski, A. Zhukov, D. V. Averin, G. Finkelstein, J. Liu, J. Schmid, L. P. Kouwenhoven, L. P. Kouwenhoven   +8 more
core   +1 more source