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1、OrbitalPhysicsinTransition-MetalOxidesY.TokuraandN.NagaosaScience288,462(2000);DOI:10.1126/science.288.5465.462Thiscopyisforyourpersonal,non-commercialuseonly.Ifyouwishtodistributethisarticletoothers,youcanorderhigh-qualitycopiesforyourcolleagues,clients,orcust
2、omersbyclickinghere.Permissiontorepublishorrepurposearticlesorportionsofarticlescanbeobtainedbyfollowingtheguidelineshere.Thefollowingresourcesrelatedtothisarticleareavailableonlineatwww.sciencemag.org(thisinformationiscurrentasofSeptember18,2013):Updatedinform
3、ationandservices,includinghigh-resolutionfigures,canbefoundintheonlineversionofthisarticleat:onSeptember18,2013http://www.sciencemag.org/content/288/5465/462.full.htmlThisarticlecites57articles,4ofwhichcanbeaccessedfree:http://www.sciencemag.org/content/288/546
4、5/462.full.html#ref-list-1Thisarticlehasbeencitedby784article(s)ontheISIWebofScienceThisarticlehasbeencitedby12articleshostedbyHighWirePress;see:http://www.sciencemag.org/content/288/5465/462.full.html#related-urlswww.sciencemag.orgThisarticleappearsinthefollow
5、ingsubjectcollections:Physicshttp://www.sciencemag.org/cgi/collection/physicsDownloadedfromScience(printISSN0036-8075;onlineISSN1095-9203)ispublishedweekly,exceptthelastweekinDecember,bytheAmericanAssociationfortheAdvancementofScience,1200NewYorkAvenueNW,Washin
6、gton,DC20005.Copyright2000bytheAmericanAssociationfortheAdvancementofScience;allrightsreserved.ThetitleScienceisaregisteredtrademarkofAAAS.CORRELATEDELECTRONSYSTEMSREVIEWOrbitalPhysicsinTransition-MetalOxidesY.Tokura1,2andN.Nagaosa1Anelectroninasolid,thatis,bou
7、ndtoornearlylocalizedonthespeciÞcWhenmorethantwoorbitalsareinvolved,aatomicsite,hasthreeattributes:charge,spin,andorbital.Theorbitalvarietyofsituationscanberealized,andthisrepresentstheshapeoftheelectroncloudinsolid.Intransition-metalquantummechanicalprocessdep
8、endsontheoxideswithanisotropic-shapedd-orbitalelectrons,theCoulombinterac-orbitals(4,5).Inthisway,thespinSWandthetionbetweentheelectrons(strongelectroncorrelationeffect)isof