Recent content by Benevito

  1. Benevito

    Conduction and valence bands in semiconductors

    For example, here https://www3.nd.edu/~djena/kdotp.pdf [Broken] it is stated that "For direct-gap semiconductors, for states near the conduction-band minimum (k = 0), the Bloch lattice-function possesses the same symmetry properties as a |S> state . In other words, it has spherical symmetry. The...
  2. Benevito

    Conduction and valence bands in semiconductors

    Why is the conduction band state s-type and the corresponding valence band state p-type?
  3. Benevito

    Neutral and charged exitons (trions)

    Thank you for clarification. Another question - how can we distinguish between positively and negatively charged exitons?
  4. Benevito

    Neutral and charged exitons (trions)

    How can we distinguish between neutral and charged exitons?
  5. Benevito

    Dielectric constant in few-layer and in bulk materials

    Why is the dielectric constant smaller in few-layer materials than in bulk materials?
  6. Benevito

    Photoluminescence at a heterojunction

    Do I understand it correctly that photoluminescence at a semiconductor heterojunction occurs because of intralayer recombination? If so, why can't photoluminescence occur because of interlayer recombination? Is it because momentum cannot be conserved in such a process ( like in the indirect gap...
  7. Benevito

    Is it ok not to reply to professor's email during weekends?

    After asking a professor about undergraduate research on Friday, I received a positive reply that very evening. The professor also asked me to send him my CV. Hovewer, it would take me some time to make it. Would it be ok to send the CV on Monday, or is it rude to take more time than him to reply?
  8. Benevito

    Negative resistance

    Why does negative resistance indicate ballistic transport?
  9. Benevito

    Current and Quantum Hall Effect

    Why does the presence of an energy gap in QHE guarantee dissipationless current flow?
  10. Benevito

    Solid State Introductory book on graphene?

    Can someone recommend a good book on graphene?
  11. Benevito

    Valley degrees of freedom

    As a local minimum/maximum on the valence/conduction band in semiconductors.
  12. Benevito

    Valley degrees of freedom

    Could someone please explain what valley degrees of freedom are?
  13. Benevito

    MIT vs Harvard in experimental condensed matter physics?

    Thanks for insight! I know this question has probably been asked a lot, but which education - STEM or liberal arts - is better for research in physics?
  14. Benevito

    MIT vs Harvard in experimental condensed matter physics?

    Thank you for your answer! If I should't choose between the schools based on my current research interests, are there any other factors I should consider?
  15. Benevito

    MIT vs Harvard in experimental condensed matter physics?

    So it really doesn't matter much which one I choose as long as I do my best and explore all the opportunities in either of the schools?
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