Preco s

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Preco sú supravodice SUPER
Peter Ballo
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Kelvin (1824-1907)?
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Objav supravodivosti
Heike Kamerlingh Onnes

• 1908 skvapalnil hélium
• (4 K - 452F )?
• 1911- meral vodivost ortute
• 1913 Nobelova cena za fyziku

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Vodice a supravodice

• Normálny vodic
• ??0 at T0
• Supravodic
• ?? at TltTc
• (supravodivý stav)?

Tc kritická teplota
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Vývoj kritickej teploty
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História v rokoch
Meissnerov Efekt (1933)?
Bardeen, Cooper, Schrieffer Teória (1957)?
Vysokoteplotná supravodivost (1985)?
Müller Bednorz
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BCS THEORY
BCS Theory deals with the behaviour of electrons
in superconducting materials at very low
temperatures
Low temperatures minimize the vibrational energy
of individual atoms in the crystal lattice
An electron moving freely through the material
encounters less impedance due to vibrational
distortions of the lattice at low temperatures
The Coulomb attraction between the passing
electron and the positive ion distorts the
crystal structure
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APPLICATIONS Power
The cable configuration features a conductor made
from HTS wires wound around a flexible hollow
core. Liquid nitrogen flows through the core,
cooling the HTS wire to the zero resistance
state. The conductor is surrounded by
conventional dielectric insulation. The
efficiency of this design reduces losses.
Superconducting Transmission Cable From American
Superconductor