Zobrazeno 1 - 10
of 200
pro vyhledávání: '"Uzunov D."'
Autor:
Uzunov, D. I.
Publikováno v:
Phys. Rev. B 87, 026501 (2013)
In this Comment, we show that the paper by Qi Li, D. Belitz and J. Toner, published in Phys. Rev. B {\bf 79}, 054514 (2009), contains an incomplete mean-field analysis of a simple model of Ginzburg-Landau type. The latter contains a stable non-unitar
Externí odkaz:
http://arxiv.org/abs/1207.1261
Publikováno v:
J.Phys.Stud.10:330-350,2006
Classic and recent results for gauge effects on the properties of the normal-to-superconducting phase transition in bulk and thin film superconductors are reviewed. Similar problems in the description of other natural systems (liquid crystals, quantu
Externí odkaz:
http://arxiv.org/abs/cond-mat/0611354
Publikováno v:
Physica A 270 (1999) 486
The critical behaviour of thin films containing quenched random impurities and inhomogeneities is investigated by the renormalization-group method. The finite-size crossover in impure films has been considered on the basis of the fundamental relation
Externí odkaz:
http://arxiv.org/abs/cond-mat/0509720
Autor:
Shopova, D. V., Uzunov, D. I.
Publikováno v:
Phys. Lett. A 328 (2004) 232.
The authors of the paper indicated in the title derived an erroneous effective free energy of superconducting slabs (films) and this error led them to entirely wrong conclusions. Here we shall make clear the genesis of this mistake.
Comment: 4 p
Comment: 4 p
Externí odkaz:
http://arxiv.org/abs/cond-mat/0404260
Autor:
Shopova, D. V., Uzunov, D. I.
Publikováno v:
Chapter in: Progress in Ferromagnetism Research, ed. by V. N. Murray, Nova Science Publishers, N. Y., 2005 [ESBN: 1-59454-469-7].
Recent results for the coexistence of ferromagnetism and unconventional superconductivity with spin-triplet Cooper pairing are reviewed on the basis of the quasi-phenomenological Ginzburg-Landau theory. New results are reported. The results are discu
Externí odkaz:
http://arxiv.org/abs/cond-mat/0404261
Autor:
Shopova, D. V., Uzunov, D. I.
Publikováno v:
Compt.Rend.Acad.Bulg.Sci. 56 (2003) 35
Magnetic susceptibility, entropy and specific heat are calculated at the equilibrium points of phase transition to a phase of coexistence of ferromagnetic order and superconductivity in a new class of spin-triplet ferromagnetic superconductors. The r
Externí odkaz:
http://arxiv.org/abs/cond-mat/0310016
Autor:
Shopova, D. V., Uzunov, D. I.
Publikováno v:
J. Phys. Studies 4 (2003) 426.
The coexistence of a homogeneous (Meissner-like) phase of spin-triplet superconductivity and ferromagnetism is investigated within the framework of a phenomenological model of spin-triplet ferromagnetic superconductors. The results are discussed in v
Externí odkaz:
http://arxiv.org/abs/cond-mat/0305602
Autor:
Shopova, D. V., Uzunov, D. I.
Publikováno v:
Phys. Lett. A 313 (2003) 139.
We investigate thermodynamic phases, including the phase of coexistence of superconductivity and ferromagnetism, the possible phase transitions of first and second order, and the shape of the phase diagram in mean-field approximation for a phenomenol
Externí odkaz:
http://arxiv.org/abs/cond-mat/0305585
Autor:
Shopova, D. V., Uzunov, D. I.
Publikováno v:
Phys.Rep. C 379 (2003) 1-67
Several basic problems of the theory of quantum phase transitions are reviewed. The effect of the quantum correlations on the phase transition properties is considered with the help of basic models of statistical physics. The effect of quenched disor
Externí odkaz:
http://arxiv.org/abs/cond-mat/0301423
Publikováno v:
Mod. Phys. Lett. B 17 (2003) 141.
The effect of magnetic fluctuations on the free energy, the order parameter profile and the latent heat at the equilibrium point of the first order phase transition to superconducting state in thin films of type I superconductors is considered. The p
Externí odkaz:
http://arxiv.org/abs/cond-mat/0301274