Timeline for Why energy bands are flat at the edges of the 1BZ?
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 22, 2022 at 12:16 | vote | accept | NotAnotherSystem | ||
| Jun 22, 2022 at 12:15 | vote | accept | NotAnotherSystem | ||
| Jun 22, 2022 at 12:15 | |||||
| Jun 22, 2022 at 10:55 | comment | added | Emilio Pisanty | This captures the nontrivial physics well. On the other hand, it's important to emphasize that the choice of how to cut up quasimomentum space into Brillouin zones is ultimately arbitrary, and the physics will work out equally well if (in this example) the 1BZ is chosen as $[-\pi/a,\pi/a]$ or as $[0,2\pi/a]$. This means that "the edge of the 1BZ" is not a well-defined concept. But, of course, in the context of Bragg reflection, there is a natural choice in putting the edge of the BZ at the flat spots where the Bragg reflection happens (i.e. where the nontrivial physics is). | |
| Jun 22, 2022 at 10:14 | history | edited | Niall | CC BY-SA 4.0 |
added 284 characters in body
|
| Jun 22, 2022 at 10:06 | history | answered | Niall | CC BY-SA 4.0 |