正常金屬-半導(dǎo)體-d波超導(dǎo)結(jié)中的隧穿譜和散粒噪聲.pdf

1、河北師范大學(xué)碩士學(xué)位論文正常金屬半導(dǎo)體d波超導(dǎo)結(jié)中的隧穿譜和散粒噪聲姓名：劉計紅申請學(xué)位級別：碩士專業(yè)：凝聚態(tài)物理指導(dǎo)教師：李玉現(xiàn)20080401AbstractTheshotnoiseisaconsequenceofthediscretenatureofthechargecarriersThemeasurementoftheshotnoisec鋤provideinformationontheconductionprocessnotco

2、ntainedinconductanceInthelastfewyears，muchattentionhasbeenpaidtothestudyofshotnoiseinthemesoscopicsystemsOuxmodelconsideredinthisworkisanormalmetal／semiconductor／dwavesupercon—dueturtunneljunctionsystemThelettelectrodeis

3、thenormalmetal，therightoneisthedwavesuperconductorandthemiddlepartisthes刪。Dndud[orBasedontheBogolinbovdeGenner(BdG)equationandBlonderTinkhanrKlapwijk(BTK)theorythetunnelingspectrumandtheshotnoisewerestudiedthroughN／SM／Ss

4、tructurewith1andauerBiittikerformulaAswesimulatethatthesemiconductorisconsidered器acertainthicknessbarriertheresultswillbemorereason曲leTheresultsareasfollows：1UnderacertainRashbaspinorbitcouplingparametertherelationbetwee

5、ntheshotnoisethetunnelingspectrumandthebiaSWaSdiscussedTheresultindicatedthattheeleetroninjectionangleanddwavesuperconductivitypairpotentialmayaffecttheshotnoisemidthetunnelingspectnnnAsizablearealdensityofmidgapstatesex

6、istson110嗣Ⅱ赫ofdwavesuperconductorTheAndrcevreflectionconductanceistwotimesasthenormaltunnelingconductanceTheshotnoisespectroscopyisseriouslyinfluencedbythe叫l(wèi)faceelectronicsmtesofthedwavesuperconductorWhenthewidthofsemico

7、nductorisintegralmultiplesof3毛，thebehaviorsoftunnelingspemnma∞qualitativelydifferentfromthatofshotnoisewhenthewidthofsemiconductorisnotintegralmultiplesof3毛2Weconsideredtheeffectofsemiconductorwidthonshotnoiseandtunnelin

8、gspectrumunderacertainR孤shbaspinorbitcofiplingparameterWhenthewidthofthesemiconductorincress鋁，thenumberoftheresonancepeaksoftheshotnoisespectrumchangeThecurrentdependsontheelectroninjectionangleThep髓I【softhecurrentappear