Rashba效應(yīng)對量子點(diǎn)中磁極化子性質(zhì)的影響.pdf

1、內(nèi)蒙古民族大學(xué)碩士學(xué)位論文Rashba效應(yīng)對量子點(diǎn)中磁極化子性質(zhì)的影響姓名：王娜申請學(xué)位級別：碩士專業(yè)：理論物理指導(dǎo)教師：肖景林20080401ThePropertiesoftheMagnetopolaroninSemiconductorQuantumDotsInducedbyInfluenceofRashbaSpin—OrbitInteraction^bstractInthispaperinfluenceofRashbaspinorb

2、itinteractioninInAs／GaAsselforganizationquantumdotisinvestigatedb)rconsideringtheRashbaspinorbitinteractionwithintermediatecouplingmethodOurnumericalresultsshowthattheRashbaspinorbitinteractionhavemoreeffecttopolaron’Sgr

3、oundstateenergy11圮electronvectordependenceoftheratioofspinorbitintemctiontothetotalgroundstateenergy01“otherenergycompositionisobviousandthespUttingenergyhasthesamemagnitudeasthecontributionofthepolaronSOitcannotbeneglec

4、tedOnecans∞thatevenwithoutanyexternalmagneticfieldthegroundstateenergycanbesplitbytheRashbaspinorbitinteractionandthisspⅡtisnotasinglebutacomplexoneSincethepresentofthephonons，whoseenergygivesnegativecontributiontothepol

5、aron’s，thespinsplittingstatesofthepolaronarcmorestablethanelectron’SRashbainteractioncannotbeneglectedInthenextchapterthepropertiesofstrongcouplingmagnetopolaroninsemiconductorquantumdotsinducedbyinfluenceofRashbaspinorb

6、itinteractionarcsmdiedThenwestudiedthepropertiesofweakcouplingboundmagnetopolaronmsemiconductorquantumdotsinducedbyinfluenceofRashbaspinorbitinteraction1f1圮relationsofthevibrationfrequencythegroundstateenergy，theinteract

7、ionenergyandtheeffectivemassofthepolaronintheelectronLOphononstrongcouplingregioninaparabolicquantumdotonthestrengthofconfinementisderivedbyusingimprovedlinercombinationoperatormethodNumericalcalculatiomforRbClcrystala他p

8、erformedandtheresultsshowthattheRashbaspinorbitinteractionmakesthegroundstateenergyandtheeffectivemassofpolaronsplitintotwobranches，andbecauseofthemagneticfieldthissplitisnotevidentlyAndthissplitisnotasimplebutacomplexon

9、eInconclusionthevibrationfrequency，theeffectivem弱sandtheinteraction。energyofthestrongcouplingmagnetopolaroninaparabolicquantmndotwillincreasequicklywithanincreaseintheconfinementstrengthofthequantumdotandtheywillreducewi

10、thallincreaseinthecyclotronfiequencyKeywords“Rashbaspinorb豇interaction“Semiconductorquantumdot；Polaron；Magnetopolaron；EffectivemassDirectedby“ProfXiaoJinglin^ppIioantforMasterdegree：gangNa印搬鵬酬P(guān)l聊si=)(ColggoofPhysicsandEl