Friday, June 16, 2017

quantum mechanics - Quantization of magnetic coupling instead of quantization of angular momentum?


In quantum mechanics - e.g. the Bohr model - would it be possible to replace the quantization of angular momentum with quantization of the magnetic properties of the orbiting electrons?


E.g. also the spin property of an electron is essentially a magnetic property and it's quantization may be understood as a quantization of that magnetic property.


EDIT: According to Emilio Pisanty (see his answer) this is a misconception.
However. The Einstein-de Haas demonstrates that spin angular momentum is of the same nature as classical angular momentum (which I btw did not disagree on), but also that the magnetism of the material is related to a certain angular momentum. And that is one reason why I am asking this question (the other reason being orbital angular momentum).
Maybe saying spin is essentially a magnetic property is misleading. It was not my intention to contradict that spin represents angular momentum, but I tried to stress that its angular momentum is always connected to magnetism.
Or perhaps better: spin and magnetism are both connected to angular momentum in such a way that you will never have spin without magnetism.


I never heard of a neutral particle orbiting anything. Were that the case, then indeed quantization of angular momentum would be leading.


Otherwise it seems to me that it must be equivalent to speak of quantization of magnetism instead of quantization of angular momentum?


A possible advantage would be that by not stressing the angular momentum, it becomes more easy to let go of the naive popular picture of a model similar to the structure of the solar system.



Do you know of any arguments against this opinion?




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