Exact electronic bands for a periodic Poschl-Teller potential
  We show that supersymmetry is a simple but powerful tool to exactly solve quantum mechanics problems. Here, the supersymmetric approach is used to analyse a quantum system with periodic P\"oschl-Teller potential, and to find out the exact energy spectra and the corresponding band structure. 
Francesco Di Filippo and Canio Noce
quant-ph