Instability induced by exchange forces in a 2-D electron gas in a magnetic field with uniform gradient.

@article{Hoodbhoy2020InstabilityIB,
  title={Instability induced by exchange forces in a 2-D electron gas in a magnetic field with uniform gradient.},
  author={Pervez Hoodbhoy},
  journal={Journal of physics. Condensed matter : an Institute of Physics journal},
  year={2020}
}
  • P. Hoodbhoy
  • Published 1 July 2020
  • Physics, Medicine
  • Journal of physics. Condensed matter : an Institute of Physics journal
The exchange interaction is investigated theoretically for electrons confined to a 2-D sample placed in a linearly varying magnetic field perpendicular to the plane. Unusual and interesting behavior is predicted: starting from zero, as one adds electrons to the system, its size will increase continuously but then collapse. However this collapse will be reversed as the number crosses another critical value, which we estimate here. For electron parameters typical for 2DEG's, the instability could… Expand

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