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pro vyhledávání: '"Kos, Simon"'
We disclose a serious deficiency of the Baym-Kadanoff construction of thermodynamically consistent conserving approximations. There are two vertices in this scheme: dynamical and conserving. The divergence of each indicates a phase instability. We sh
Externí odkaz:
http://arxiv.org/abs/2309.07699
Publikováno v:
In Surface & Coatings Technology 15 February 2024 477
Publikováno v:
In Surface & Coatings Technology 30 January 2024 476
Autor:
Kaufman, Michal, Vlček, Jaroslav, Houška, Jiří, Čerstvý, Radomír, Farrukh, Sadoon, Chargaoui, Mohamed, Haviar, Stanislav, Jiang, Jiechao, Meletis, Efstathios I., Kos, Šimon
Publikováno v:
In Solar Energy Materials and Solar Cells December 2023 263
Akademický článek
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We develop a theory of spin noise spectroscopy of itinerant, noninteracting, spin-carrying fermions in different regimes of temperature and disorder. We use kinetic equations for the density matrix in spin variables. We find a general result with a c
Externí odkaz:
http://arxiv.org/abs/0911.4578
Publikováno v:
Phys. Rev. Lett. 93, 107004 (2004)
We have studied quasiparticle tunneling into atomically flat a-axis films of YBa2Cu3O7-d and DyBa2Cu3O7-d through epitaxial CaTiO3 barriers. The junction heterostructures were grown by oxide molecular beam epitaxy and were carefully optimized using i
Externí odkaz:
http://arxiv.org/abs/cond-mat/0407306
In the heavy-fermion materials CeCoIn$_5$ and UBe$_{13}$, the superconducting order parameter is coupled to flucutating magnetization of the uncompensated part of the localized $f$-moments. We find that this coupling decreases the superconducting tra
Externí odkaz:
http://arxiv.org/abs/cond-mat/0302089
Autor:
Kos, Simon
We study the physical mechanism of the surface d->d+is transition proposed as the interpretation of results of tunneling experiments into ab planes. We base our argument on first-order perturbation theory and show that the zero-bias states drive the
Externí odkaz:
http://arxiv.org/abs/cond-mat/0008410
Autor:
Kos, Simon
We discuss the basic physical mechanism of the d->d+is transition, which is the currently accepted explanation for the results of tunneling experiments into $ab$ planes. Using the first-order perturbation theory, we show that the zero-bias states dri
Externí odkaz:
http://arxiv.org/abs/cond-mat/0006047