欢迎来到天天文库
浏览记录
ID:39906836
大小:269.65 KB
页数:5页
时间:2019-07-14
《Topological insulators》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、Feature:Topologicalinsulatorsphysicsworld.comTopologicalinsulatorsThisnewlydiscoveredphaseofmatterhasbecomeoneofthehottesttopicsincondensed-matterphysics.Itishardtounderstand–thereisnodenyingit–buttakeadeepbreath,asCharlesKaneandJoelMooreareheretoexplainwhatallthefussisaboutCharlesKaneisaAsanyone
2、withahealthyfearofstickingtheirfingerscelebratedbythe2010Nobelprize–thatinspiredtheseprofessorofphysicsintoaplugsocketwillknow,thebehaviourofelectronsnewideasabouttopology.attheUniversityofindifferentmaterialsvariesdramatically.ThefirstButonlywhentopologicalinsulatorswerediscov-Pennsylvania.“elec
3、tronicphases”ofmattertobedefinedweretheeredexperimentallyin2007didtheattentionoftheJoelMooreisanelectricalconductorandinsulator,andthencamethecondensed-matter-physicscommunitybecomefirmlyassociateprofessorsemiconductor,themagnetandmoreexoticphasesfocusedonthisnewclassofmaterials.Arelatedtopo-ofph
4、ysicsatsuchasthesuperconductor.Recentworkhas,how-logicalpropertyknownasthequantumHalleffecthadUniversityofever,nowuncoveredanewelectronicphasecalledaalreadybeenfoundin2Dribbonsintheearly1980s,California,Berkeleyandafacultyscientisttopologicalinsulator.Puttingthenametoonesideforbutthediscoveryofth
5、efirstexampleofa3Dtopologi-attheLawrencenow,themeaningofwhichwillbecomeclearlater,calphasereignitedthatearlierinterest.GiventhattheBerkeleyNationalwhatisreallygettingeveryoneexcitedisthebehaviour3Dtopologicalinsulatorsarefairlystandardbulksemi-Laboratory,ofmaterialsinthisphase.Strangely,theycanin
6、sulateconductorsandtheirtopologicalcharacteristicscane-mailjemoore@ontheinsidebutconductontheoutside–actinglikeasurvivetohightemperatures,theirnovelpropertiesberkeley.edu.thickplasticcablecoveredwithalayerofmetal,exceptcouldleadtosomeexcitingapplications.thatthematerialisactuallythesamethroughout
7、.Whatismore,theconductingelectronsarrangethem-Howtheyworkselvesintospin-upelectronstravellinginonedirec-Manyofthemostremarkablephenomenaincon-tion,andspin-downelectronstravellingintheother;densed-matterphysicsareconseq
此文档下载收益归作者所有