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1.
Adv Mater ; 26(13): 2034-40, 2014 Apr 02.
Artigo em Inglês | MEDLINE | ID: mdl-24343908

RESUMO

Strong granularity-correlated and intragrain modulations of the superconducting order parameter are demonstrated in heavily boron-doped diamond situated not yet in the vicinity of the metal-insulator transition. These modulations at the superconducting state (SC) and at the global normal state (NS) above the resistive superconducting transition, reveal that local Cooper pairing sets in prior to the global phase coherence.

2.
Phys Rev Lett ; 105(23): 236403, 2010 Dec 03.
Artigo em Inglês | MEDLINE | ID: mdl-21231488

RESUMO

The heat capacity of MnSi at B = 0 and B = 4 T was measured in the temperature range 2.5-100 K. To analyze the data, calculations of the phonon spectrum and phonon density of states in MnSi were performed. The calculated phonon frequencies were confirmed by means of inelastic neutron scattering. The analysis of the data suggests the existence of negative contributions to the heat capacity and entropy of MnSi at T > T(c) that may imply a specific ordering in the spin subsystem in the paramagnetic phase of MnSi.

3.
Phys Rev E Stat Nonlin Soft Matter Phys ; 67(1 Pt 1): 010201, 2003 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-12636475

RESUMO

In the framework of the perturbation theory for fluids we study the model with the isotropic repulsive step potential which in addition to the hard core has a repulsive soft core of a larger radius. It is shown that this purely repulsive potential is sufficient to explain a liquid-liquid phase transition and liquid anomalies.

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