Autor: Komanicky, V. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Enhanced Superconductivity in Nanosized Tips of Scanning Tunnelling Microscope
Autorzy:: Samuely, T.
Szabó, P.
Komanický, V.
Rodrigo, J.
Vieira, S.
Samuely, P.
Powiązania:: https://bibliotekanauki.pl/articles/1535399.pdf
Data publikacji:: 2010-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 74.55.+v
61.46.-w
Opis:: Nanosized Pb junctions exhibit superconducting correlations at magnetic fields more than an order of magnitude higher than the zero-temperature critical field of the bulk Pb. The strongly enhanced critical field is a spectacular demonstration of nanosize effect where the Meissner screening currents become ineffective for junction's tip smaller than the London penetration depth (32 nm for Pb). From the enhanced critical field we characterize the geometry of a particular junction using the variable radius pair breaking theoretical model of Suderow et al.
Źródło:: Acta Physica Polonica A; 2010, 118, 5; 1038-1039
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Specific Heat Study of Superconductivity in $Cu_{0.061}TiSe_{2}$
Autorzy:: Kačmarčík, J.
Pribulová, Z.
Pal'uchová, V.
Husaníková, P.
Karapetrov, G.
Komanický, V.
Samuely, P.
Powiązania:: https://bibliotekanauki.pl/articles/1371314.pdf
Data publikacji:: 2014-07
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 72.80.Ga
74.25.Bt
71.45.Lr
Opis:: In $TiSe_{2}$ a charge-density-waves order is continuously suppressed by copper doping and superconductivity appears. We report a calorimetric study performed on the superconducting single crystal of $Cu_{0.061}TiSe_{2}$ with $T_{c}$=2.8 K, measured by the ac technique at low temperatures down to 0.6 K and magnetic fields up to 2 T. Sharp specific heat anomaly at the superconducting transition is found. The temperature dependence of the electronic specific heat and the angular dependence of the critical temperature, measured at a fixed magnetic field, consistently indicate on the existence of a single s-wave superconducting gap with a coupling strength of 2Δ/$k_{B}T_{c}$=3.6, close to BCS limit.
Źródło:: Acta Physica Polonica A; 2014, 126, 1; 322-323
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Local Magnetometry of $Cu_{0.064}TiSe_{2}$
Autorzy:: Pribulová, Z.
Medvecká, Z.
Kačmarčík, J.
Komanický, V.
Klein, T.
Husaníková, P.
Cambel, V.
Šoltýs, J.
Karapetrov, G.
Samuely, P.
Powiązania:: https://bibliotekanauki.pl/articles/1372336.pdf
Data publikacji:: 2014-07
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 74.25.Ha
74.25.Wx
Opis:: Local magnetometry using miniature Hall-probe array was used to study vortex distribution in superconducting single crystal of $Cu_{x}TiSe_{2}$, with x=0.064 and $T_{c}$=3.2 K. We show that vortices after penetration into the sample move towards the center, resulting into a dome-shape field profile. Such a profile is a signature of relatively low pinning. We show that these measured profiles are consistent with a model proposed for the samples in the absence of bulk pinning. Modifications necessary to obtain quantitative agreement between the model and the data are presented.
Źródło:: Acta Physica Polonica A; 2014, 126, 1; 370-371
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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