I am doing my project on energy gap of semiconductors. For that i have an doubt that what will happen to the energy gap of diode if it is exposed to magnetic field intensity? Is it possible to place diode circuit in the magnetic field? If yes what is the relationship between enrgy gap and magnetic field. How can it calculated?


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Charge carriers in a semiconductor exposed to a magnetic field are influenced by the Hall effect, but the effects on a typical diode are negligible. The effect can only be practically detected with specially designed Hall effect sensors; even then, powerful amplifiers are required.

  • \$\begingroup\$ What is relation between energy gap and magnetic field? \$\endgroup\$
    – Dhayalan A
    Commented Jan 5, 2018 at 17:11
  • \$\begingroup\$ @Dhayalan As duskwuff sayed it is determined by the hall-effect. read up on hall-effect and it will make sense. \$\endgroup\$
    – user173292
    Commented Jan 5, 2018 at 17:17
  • \$\begingroup\$ @Vinzent The Hall Effect relates to the curved (rather than straight) path that electrons follow in the presence of a magnetic field oriented to cause that effect. It's not a panacea explanation of the effect of magnetic fields -- and certainly not an explanation of the effect -- on the energy gap. (It may matter at very low temps, though.) That subject would be based far more upon different physical principles; Fermi surface, Shroedinger equation, Landau quantizations, and perhaps others. But Hall Effect would be low on my list, anyway. \$\endgroup\$
    – jonk
    Commented Jan 5, 2018 at 18:24

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