半導(dǎo)體納米結(jié)構(gòu)體系的彈道電子輸運.pdf

1、湘潭大學(xué)碩士學(xué)位論文半導(dǎo)體納米結(jié)構(gòu)體系的彈道電子輸運姓名：王如志申請學(xué)位級別：碩士專業(yè)：凝聚態(tài)物理指導(dǎo)教師：顏曉紅鐘建新20000401墾：圣!!!g望!!!!塑!!!垡竺竺塑!：!!!g!!!!!BallistictransportofnanostructuredsemiconductorAbstractDuetothefavorableexperimentalenvironmentsupplyingwiththeinventiono

2、fsemiconductorheterostruclllreresandthedevelopmentofullrasmallfabricationtechnologyitmakesnanoelectronics，whichiSbasedonthequantumtheorybecomeoneoftheprecedinghotpotswithmicroelectronicssufferingfromaclassicallimitationI

3、nthispaperbydevelopingaWansfermethod，weinvestigatethepropertiesofelectrontransportfornanostrucanedsystemsofsemiconductorsuperlatticesandevenforquantumwiresystems，anddiSCUSStheballistictransportfor2DEGsandtheHallconductiv

4、ityforthelongquantumwirethroughbothelectricmodulationsandmagneticmodulationsTheresultsshowthatthereexisttherulesforballistictunnelingandresonantsplittingThethesisconsistsoftheintroductionandtheotherfivechaptersIntheintro

5、duction，itpointsouttheevolutionandimportanceoftheresearchproblem，anditalSOsummarizesboththeoricandexperimentalprogressofthisinvestigationChapter1iSforthefundamentaltheorieswhichintroducesconciselytheLaudauerBtittikertheo

6、ryanddevelopsatransfermethodtoadapttotheposteriorchaptersInchapter2andchapter3一Wrestudymainlythetunnelingandtheresonantpeaksplittingofballistictransportina2DEGwithelectromagneticmodulationsItshowsthatthecourseofballistic

7、transportunderelectromagneticmodulationsiSconsistentwiththeoneonlythroughelectricmodulationsormaKneticmodulationsinsubstance，besidestheoscillationsoftransportimproverapidlyforelectromagneticmodulations，suchasthetunneling

8、oscillations，theballisticconductance，thesymmetryoftransmissionaboutthevectorplanWeinvestigatedtheH射lconductivityofalongquantumwireunderrealmagneticbarriersinchapter4ItisfoundthatthestepHmlconductivitycarlbeobserved，andwi