Correction to the Formula for the London Moment of a Rotating Superconductor

Journal Article · Fri Oct 01 04:00:00 EDT 1982 · J. Low Temp. Phys.; (United States)

DOI:https://doi.org/10.1007/BF00681758· OSTI ID:6363336

Brady, R M

This paper gives a full quantum mechanical analysis of the magnetic field (first discussed by London) that appears spontaneously when a sample of superconductor is set into rotation. It is shown that, for slow rotation velocities and using certain approximations, the field B threading a cavity within a superconductor that rotates at angular velocity ..omega.. is given by eB = 2(m/sub 0/-W/c/sup 2/)..omega.., where -e is the charge on the electron, m/sub 0/ is the free electron mass, W is the work function of the superconductor, and c is the velocity of light. In this calculation effects that are second order in the rotation velocity have been ignored, and the result is only strictly valid at the zero of temperature. The application of this result to experiments using practical, nonideal apparatus is then illustrated for a simple geometry.

• Research Organization: Electromagnetic Technology Division, National Bureau of Standards, Boulder, Colorado
• OSTI ID: 6363336
• Journal Information: J. Low Temp. Phys.; (United States), Journal Name: J. Low Temp. Phys.; (United States) Vol. 49:1; ISSN JLTPA
• Country of Publication: United States
• Language: English

Related Subjects

656102* -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
EQUATIONS
FUNCTIONS
LONDON EQUATION
MAGNETIC FIELDS
MECHANICS
MOTION
QUANTUM MECHANICS
ROTATION
SUPERCONDUCTORS
WORK FUNCTIONS