Results 81 to 90 of about 190,473 (189)

Kondo effect in nanostructures [PDF]

physica status solidi (a), 2006
AbstractKondo effect arises whenever a coupling to the Fermi gas induces transitions within the otherwise degenerate ground state multiplet of an interacting system. Both coupling to the Fermi gas and interactions are naturally present in any nanoscale transport experiment.
openaire   +2 more sources

Holographic mean field theory and Kondo lattice

Journal of High Energy Physics
We first study a non-relativistic field theory model for the Kondo lattice by introducing the Kondo condensation, whose main effect is the hybridization of the flat band of the localized electron with dispersive one of the itinerant electron. The problem
Young-Kwon Han, Debabrata Ghorai, Taewon Yuk, Sang-Jin Sin   +3 more
doaj   +1 more source

Size Dependence In The Disordered Kondo Problem

, 1996
We study here the role randomly-placed non-magnetic scatterers play on the Kondo effect. We show that spin relaxation effects (with time $\tau_s^o$)in the vertex corrections to the Kondo self-energy lead to an exact cancellation of the singular ...
A. A. Abrikosov, B. L. Altshuler, D. Korn, E. Abrahams, F. J. Ohkawa, F. J. Ohkawa, H. U. Everts, Ivar Martin, J. F. Di Tusa, J. Kondo, K. Vladar, K.-P. Bohnen, M. A. Blachly, O. Ujsaghy, P. W. Anderson, Philip Phillips, S. Suga, V. A. Volkov, V. Chandrasekhar, Yi Wan   +19 more
core   +2 more sources

Inducing Kondo screening of vacancy magnetic moments in graphene with gating and local curvature

Nature Communications, 2018
Observing and tuning the Kondo effect in graphene is experimentally challenging. Here, the authors identify the spectroscopic signature of Kondo screening in graphene, along with a quantum phase transition between screened and unscreened phases of ...
Yuhang Jiang, Po-Wei Lo, Daniel May, Guohong Li, Guang-Yu Guo, Frithjof B. Anders, Takashi Taniguchi, Kenji Watanabe, Jinhai Mao, Eva Y. Andrei   +9 more
doaj   +1 more source

Theory of Charge Kondo Effect on Pair Hopping Mechanism

, 2012
A new microscopic model of the charge Kondo effect is proposed, and is studied on the basis of a numerical renormalization group calculations. It is shown that the charge Kondo effect is caused by a pair hopping interaction between the conduction band ...
Matsuura, Hiroyasu, Miyake, Kazumasa
core   +1 more source

Evolution of the Kondo Effect in a Quantum Dot Probed by the Shot Noise

, 2011
We measure the current and shot noise in a quantum dot (QD) in the Kondo regime to address the non-equilibrium properties of the Kondo effect. By systematically tuning the temperature and gate voltages to define the level positions in the QD, we observe ...
Arakawa, Tomonori, Chida, Kensaku, Fujii, Tatsuya, Kobayashi, Kensuke, Nakamura, Shuji, Ono, Teruo, Sakano, Rui, Sekiguchi, Koji, Yamauchi, Yoshiaki   +8 more
core   +1 more source

Electric Dipolar Kondo Effect Emerging from Vibrating Magnetic Ion

, 2012
When a magnetic ion vibrates in a metal, it inevitably introduces a new channel of hybridization with conduction electrons and in general, the vibrating ion induces electric dipole moment. In such a situation, we find that magnetic and non-magnetic Kondo
Hotta, Takashi, Ueda, Kazuo
core   +1 more source

The Kondo effect of an adatom in graphene and its scanning tunneling spectroscopy

New Journal of Physics, 2013
We study the Kondo effect of a single magnetic adatom on the surface of graphene. The unique linear dispersion relation near the Dirac points in graphene makes it easier for the magnetic atom to form a local magnetic moment, which simply means that the ...
Lin Li, Yang-Yang Ni, Yin Zhong, Tie-Feng Fang, Hong-Gang Luo   +4 more
doaj   +1 more source

Disordered Kondo Nanoclusters: Effect of Energy Spacing

, 2003
Exact diagonalization results for Kondo nanoclusters alloyed with mixed valence impurities show that tuning the {\it energy spacing}, $\Delta$, drives the system from the Kondo to the RKKY regime.
A. C. Hewson, A. H. Castro Neto, C. Verdozzi, Nicholas Kioussis, P. Fulde, P. S. Riseborough, Y. Luo   +6 more
core   +1 more source

Selective Spin Injection Controlled by Electrical way in Ferromagnet/Quantum Dot/Semiconductor system

, 2008
Selective and large polarization of current injected into semiconductor (SC) is predicted in Ferromagnet (FM)/Quantum Dot (QD)/SC system by varying the gate voltage above the Kondo temperature.
Alvarado, Bloomfield, Datta, Fujisawa, Gruber, Guéret, Hanbicki, Hanbicki, Hanson, Haug, Isakovic, Jauho, Jia, Jiang, Khaetskii, Koga, Kreuzer, Manago, Martinek, Meir, Motsnyi, Ng, Ng, Ono, Pasupathy, Pasupathy, Platero, Rashba, Rontani, Sasakl, Schmidt, Schrieffer, Sergueev, Slobodskyy, Sun, Sun, Tarucha, Tarucha, van Dijken, van Dijken, van Dijken, Wingreen, Wolf, Yakimenko, Zhen-Gang Zhu, Zhu, Zhu   +46 more
core   +1 more source