Electrons in the conduction band at low temperatures are combined into a Bose-Einstein gas, which has the property of superfluidity, therefore, the so-called superconductivity is actually superfluidity of an electron gas without the resistance of the crystal structure. The ability of a substance in a special state, which occurs at temperatures close to absolute zero, to flow through narrow slits and capillaries without friction. This is superfluidity.
Can someone please elaborate more how in (30:56) magnetic field adjusts the phase? Aren't they in the same phase because it is one just one metal? Thank you!
The magnetic material has an exchange field, which will then impose a phase shift on the two electrons of a Cooper Pair as they propagate through. What that means is that there will be a boundary that the cooper pair has to cross and this will force one electron into the majority band, or spin-up, and the other into the minority band, or spin-down (Pauli's exclusion principle)
I read and talked to many ppl about these concepts, but you know how to intuitively build the picture. Hats off!
Every time I watch the lectures, I understand new things
Молодец , брат всё-таки наши специалисты наводят порядок в куче экспериментов по JJ
Electrons in the conduction band at low temperatures are combined into a Bose-Einstein gas, which has the property of superfluidity, therefore, the so-called superconductivity is actually superfluidity of an electron gas without the resistance of the crystal structure. The ability of a substance in a special state, which occurs at temperatures close to absolute zero, to flow through narrow slits and capillaries without friction. This is superfluidity.
Awesome lecture
thank you for your very clear lecture
Would a semiconductor tunneling effect occur when using a difference amplifier op-amp to detect zero crossings of a sinusoidal signal?
Thank you for such a good lecture
therefore, what's the difference between quantum tunneling and J. junction ?
Can I have the ppt file? The lecture is so nice.
Did you find the ppt slides? I'd like to have them as well :)
Very clear ..thank you!!
great explanation .. thanks!
Can someone please elaborate more how in (30:56) magnetic field adjusts the phase? Aren't they in the same phase because it is one just one metal?
Thank you!
Salamat Burj I guess it’s due to the Lorentz force. You’re welcome.
The magnetic material has an exchange field, which will then impose a phase shift on the two electrons of a Cooper Pair as they propagate through. What that means is that there will be a boundary that the cooper pair has to cross and this will force one electron into the majority band, or spin-up, and the other into the minority band, or spin-down (Pauli's exclusion principle)
Thank you!
Very good lecture. Thank you!
beast lectuer
Thank you
Great lecture, thank you !
Good lecture but poor flow compared with lecture 13 which was excellent.
thank u
good~~