ThephononHamiltoniantakesthequadraticformH=Xk;!k;b+k;bk;(4.2.1)(we - PPT Presentation
3D432whereNisthetotalnumberofatomsinthecrystalThespecicheatofonebosonicmodewithenergycanbefoundascVE
T
T1
eT12
T2eT
eT124332
Figure16aAnsatzforphintheDebyet ID: 138637