Zobrazeno 1 - 10
of 494
pro vyhledávání: '"Rau I"'
Autor:
Baumann, S., Donati, F., Stepanow, S., Rusponi, S., Paul, W., Gangopadhyay, S., Rau, I. G., Pacchioni, G. E., Gragnaniello, L., Pivetta, M., Dreiser, J., Piamonteze, C., Lutz, C. P., Macfarlane, R. M., Jones, B. A., Gambardella, P., Heinrich, A. J., Brune, H.
We combine density functional theory, x-ray magnetic circular dichroism, multiplet calculations, and scanning tunneling spectroscopy to assess the magnetic properties of Fe atoms adsorbed on a thin layer of MgO(100) on Ag(100). Despite the strong axi
Externí odkaz:
http://arxiv.org/abs/1506.07807
Publikováno v:
published in "Understanding Quantum Phase Transitions" (series: Condensed Matter Physics, Nov. 2 2010) by CRC Press
This review article describes theoretical and experimental advances in using quantum dots as a system for studying impurity quantum phase transitions and the non-Fermi liquid behavior at the quantum critical point.
Comment: 33 pages and 6 figure
Comment: 33 pages and 6 figure
Externí odkaz:
http://arxiv.org/abs/1309.7737
Autor:
Keller, A. J., Amasha, S., Weymann, I., Moca, C. P., Rau, I. G., Katine, J. A., Shtrikman, Hadas, Zaránd, G., Goldhaber-Gordon, D.
Publikováno v:
Nature Phys. 10 (2014) 145-150
Central to condensed matter physics are quantum impurity models, which describe how a local degree of freedom interacts with a continuum. Surprisingly, these models are often universal in that they can quantitatively describe many outwardly unrelated
Externí odkaz:
http://arxiv.org/abs/1306.6326
We report measurements of the electron dephasing time extracted from the weak localization (WL) correction to the average conductance in an open AlGaAs/GaAs quantum dot from 1 K to 13 mK. In agreement with theoretical predictions but in contrast with
Externí odkaz:
http://arxiv.org/abs/1210.0087
Autor:
Amasha, S., Keller, A. J., Rau, I. G., Carmi, A., Katine, J. A., Shtrikman, H., Oreg, Y., Goldhaber-Gordon, D.
We report measurements of the Kondo effect in a double quantum dot (DQD), where the orbital states act as pseudospin states whose degeneracy contributes to Kondo screening. Standard transport spectroscopy as a function of the bias voltage on both dot
Externí odkaz:
http://arxiv.org/abs/1207.0526
Publikováno v:
Phys. Rev. Lett. 107 216804 (2011)
We report the observation of Coulomb blockade in a quantum dot contacted by two quantum point contacts each with a single fully-transmitting mode, a system previously thought to be well described without invoking Coulomb interactions. At temperatures
Externí odkaz:
http://arxiv.org/abs/1009.5348
Scaling laws and universality play an important role in our understanding of critical phenomena and the Kondo effect. Here we present measurements of non-equilibrium transport through a single-channel Kondo quantum dot at low temperature and bias. We
Externí odkaz:
http://arxiv.org/abs/0710.3211
A dilute concentration of magnetic impurities can dramatically affect the transport properties of an otherwise pure metal. This phenomenon, known as the Kondo effect, originates from the interactions of individual magnetic impurities with the conduct
Externí odkaz:
http://arxiv.org/abs/cond-mat/0611480
Some of the most intriguing problems in solid state physics arise when the motion of one electron dramatically affects the motion of surrounding electrons. Traditionally, such highly-correlated electron systems have been studied mainly in materials w
Externí odkaz:
http://arxiv.org/abs/cond-mat/0610721
This document provides detailed descriptions of data acquisition and data analysis in support of the accompanying Article, cond-mat/0610721: Observation of the two-channel Kondo effect. Some of the most intriguing problems in solid state physics aris
Externí odkaz:
http://arxiv.org/abs/cond-mat/0610723