Zobrazeno 1 - 10
of 193
pro vyhledávání: '"Dubi Y"'
Motivated by recent success of local electron tunneling into heavy fermion materials, we study the local electronic structure around a single Kondo hole in an Anderson lattice model and the Fano interference pattern relevant to STM experiments. Withi
Externí odkaz:
http://arxiv.org/abs/1110.4381
Publikováno v:
Phys. Rev. B 84, 214410 (2011)
Through an analysis and modeling of data from various experimental techniques, we present clear evidence for the presence of a hidden order pseudogap in \U in the temperature range between 25 K and 17.5 K. Considering fluctuations of the hidden order
Externí odkaz:
http://arxiv.org/abs/1104.2931
Autor:
Dubi, Y., Balatsky, Alexander V.
Publikováno v:
Phys. Rev. Lett. 106, 086401 (2011)
A phenomenological model for the 'hidden order' transition in the heavy Fermion material URu$_2$Si$_2$ is introduced. The 'hidden order' is identified as an incommensurate, momentum-carrying hybridization between the light hole band and the heavy ele
Externí odkaz:
http://arxiv.org/abs/1011.5315
Publikováno v:
Phys. Rev. Lett. 105, 246401 (2010)
Recently observed tunneling spectra on clean heavy fermion compounds show a lattice periodic Fano lineshape similar to what is observed in the case of tunneling to a Kondo ion adsorbed at the surface. We show that the translation symmetry of a clean
Externí odkaz:
http://arxiv.org/abs/1008.4923
Phase fluctuations in finite thickness layered superconducting films are studied theoretically. The model consists of a set of layers, coupled to each other via a gradient-like term in the phase-only action. It is shown that the effective phase stiff
Externí odkaz:
http://arxiv.org/abs/1002.4203
Autor:
Dubi, Y., Balatsky, A. V.
Publikováno v:
Phys. Rev. Lett.104, 166802 (2010)
The effect of impurities which induce local interlayer tunneling in bilayer exciton condensates is discussed. We show that a localized single fermion bound state emerges inside the gap for any strength of impurity scattering and calculate the depende
Externí odkaz:
http://arxiv.org/abs/0912.3201
Autor:
Dubi, Y., Di Ventra, M.
Publikováno v:
Phys. Rev. E 79, 042101 (2009)
The onset of Fourier's law in a one-dimensional quantum system is addressed via a simple model of weakly coupled quantum systems in contact with thermal baths at their edges. Using analytical arguments we show that the crossover from the ballistic (i
Externí odkaz:
http://arxiv.org/abs/0812.4774
Autor:
Dubi, Y., Di Ventra, M.
Publikováno v:
Phys. Rev. B. 79, 081302(R) (2009)
We study a system composed of a quantum dot in contact with ferromagnetic leads, held at different temperatures. Spin analogues to the thermopower and thermoelectric figures of merit are defined and studied as a function of junction parameters. It is
Externí odkaz:
http://arxiv.org/abs/0811.3265
Publikováno v:
Phys. Rev. B 79, 235110 (2009)
We have performed first order reversal curve measurements of the temperature-driven metal-insulator transition in VO$_2$ thin films, which enable quantitative analysis of the hysteresis behavior. An unexpected tail-like feature in the contour plot of
Externí odkaz:
http://arxiv.org/abs/0811.2206
Autor:
Dubi, Y., Di Ventra, Y.
Publikováno v:
Phys. Rev. B 79, 115415 (2009)
The theory of open quantum systems is used to study the local temperature and heat currents in metallic nanowires connected to leads at different temperatures. We show that for ballistic wires the local temperature is almost uniform along the wire an
Externí odkaz:
http://arxiv.org/abs/0810.0247