Welcome Physics Lovers! Ask Your Questions About Electron Spin

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Discussion Overview

The discussion centers around the effects of external forces on electron spin, exploring whether it is possible to alter or influence electron spin and the implications of such changes. The scope includes theoretical considerations and references to experimental contexts.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant questions what external forces can affect electron spin, specifically whether it is possible to slow down or speed up electron spin.
  • Another participant asserts that spin is an intrinsic property of particles that cannot be changed, comparing it to mass and clarifying that it does not involve actual spinning motion.
  • A different participant notes that while the spin of an electron cannot be altered, its orientation can be influenced by external electromagnetic forces, referencing the Stern-Gerlach experiment.
  • Some participants propose the idea that it may be possible to separate or select electrons based on their specific spin states.
  • One participant suggests that the manipulation of electron spin could be used to encode binary information, with spin-up representing 0 and spin-down representing 1.

Areas of Agreement / Disagreement

Participants express differing views on the nature of electron spin, particularly regarding whether it can be altered or influenced by external forces. There is no consensus on the possibility of changing electron spin, and multiple competing perspectives remain.

Contextual Notes

Some claims depend on specific interpretations of quantum mechanics and may involve unresolved assumptions about the nature of spin and external influences.

EinsteinII
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Hello Physics Lovers,

I was working and suddenly got this question. What external forces have effects on electron spin, like slowing down/speeding up? Is that a possible thing in the first place?
 
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Spin is an intrinsic property of a particle, similar to mass. It cannot be changed at all. Note that the particle isn't actually spinning in a circle. It's just that some of the math involving certain properties behaves AS IF it were a small little ball spinning around.
 
Electron is a fermion with spin 1/2 which can't be altered. The orientation of spin can be "up" or "down" and this can be seen by an external electromagnetic force. It may be interesting to read about the Stern-Gerlach experiment: http://en.wikipedia.org/wiki/Stern–Gerlach_experiment
 
You may be interested to know that it may be possible to separate/select/confine electron with specific spin. See this.
 
manojr said:
You may be interested to know that it may be possible to separate/select/confine electron with specific spin. See this.

I think they are just flipping them to encode binary information: spin-up= 0, spin-down= 1.
 

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