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Related Experiment Video

Updated: May 31, 2026

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

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Published on: August 2, 2019

The missing angular momentum of superconductors.

¹Department of Physics, University of California, San Diego, La Jolla, CA 92093-0319, USA.

Journal of Physics. Condensed Matter : an Institute of Physics Journal

|June 23, 2011

Summary

The Meissner effect in superconductors challenges conventional theory due to angular momentum concerns. An unconventional hole superconductivity model offers a consistent explanation, resolving this anomaly.

Area of Science:

Condensed Matter Physics
Quantum Mechanics

Background:

The Meissner effect, expelling magnetic fields from superconductors, is a key phenomenon.
Conventional superconductivity theories, like the London-Bardeen-Cooper-Schrieffer framework, face challenges explaining the Meissner effect without apparent angular momentum non-conservation.

Purpose of the Study:

To investigate the theoretical inconsistencies of the Meissner effect within conventional superconductivity frameworks.
To explore an alternative explanation for the Meissner effect using principles of hole superconductivity.

Main Methods:

Theoretical analysis of the Meissner effect within established and unconventional superconductivity models.
Examination of angular momentum conservation in relation to magnetic field expulsion.

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Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride

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Published on: July 8, 2021

Main Results:

The conventional London-Bardeen-Cooper-Schrieffer theory presents difficulties in consistently explaining the Meissner effect, potentially indicating angular momentum non-conservation.
An unconventional theory incorporating macroscopic charge inhomogeneity, mesoscopic electron orbits (radius 2λ(L)), and spin-orbit coupling provides a consistent explanation for the Meissner effect.

Conclusions:

The Meissner effect poses a significant anomaly for conventional superconductivity theories.
Hole superconductivity offers a viable theoretical framework that resolves the Meissner effect puzzle through specific electronic and spin properties.