Danyon
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Does a superconductor experience any forces acting upon it when it is passed through a magnetic field?
Superconductors in magnetic fields
- Context: Undergrad
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Hornbein
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Danyon said:
Yes, as evidenced by those videos of levitating superconductors.
PhiowPhi
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Adding to that, if type II superconductors would have some of the flux lines passing through the material:
Let's assume there is current flowing within the conductor will it experience a Lorentz force(##F_L##)? Is it equal to(##IL \times B##)?
Let's assume there is current flowing within the conductor will it experience a Lorentz force(##F_L##)? Is it equal to(##IL \times B##)?
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The magnetic field will be expelled from the superconductor. It can only propagate within a distance called the London penetration depth. This is the meissner effect. The applied field in the interior is canceled by surface currents. In this sense, an sc is a perfect diamagnet, but the diamagnetism is different from ordinary materials.