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12EE5209NanoelectronicsElectron,spin,photonMagneticmaterials(PartI-Lecture2)IntroductionConstraint,interactionSemiconductortosolidstateandconsequencesphysicsMetalquantumwells(excludingFreeelectrontopicswhichFermisurfaceofarenotElectroninaslab,metalrelatedtowire,boxandthismodule)periodicpotentialMetal,semiconductorandinsulatorDensityofstate,YihongWuFermienergy,LatticestructureAssociateProfessorDepartmentofElectricalandComputerEngineeringFermi-DiracEnergybandsdistributionNationalUniversityofSingaporeRoom:E4-5-19EE5209NanoelectronicsYihongWu,ECE,NUS2006EE5209NanoelectronicsYihongWu,ECE,NUS200634Metal-FermisurfaceMetal-FermisurfaceFermisurfaceofrealmetalsAtT=0,theFermisurfaceseparatestheunfilledorbitsfromthefilledorbits.TheelectricalpropertiesofthemetalaredeterminedbytheshapeoftheTofindtheFerm