英语翻译
AsshowninFig.9(a),foracontrolsampleofp-typePbTedopedwith1%Na2Te,thecarriermobilityatroomtemperatureisx02350cm2Vx031sx031.Thecorrespondingcarriermobilityforasamplecontaining
1%(and2%)SrTeisx02340cm2Vx031sx031(forthesamecarrierconcentrationofx025.6x041019cmx033).Thegrowthof
endotaxialSrTenanocrystalsinthePbTematrixdoesnotappeartoaffecttheholescattering.Thisisbelievedtooccurby(1)endotaxialalignmentofSrTeandPbTewithcoherent/semicoherent
interfaces,and(2)thealignmentoftheenergiesofthevalencebandsinthetwomaterialswherethebandoffsetisverysmallat>300K.ThefavorablevalencebandtopalignmentofthePbTeandSrTephasesisalsosuggestedbyfirst-principlesbandcalculations.AscanbeseenfromFig.9(b)thealignment
ofthevalencebandtopisfavorableandindeedp-typeNadopinginthePbTe–SrTesystemdoesresultinnegligiblereductionofthecarriermobilityrelativetopurePbTe.14