Electronic spin states in fullerides and endohedral fullerenes [Elektronische Ressource] / vorgelegt von Jürgen Rahmer

Electronic Spin States in Fullerides andEndohedral FullerenesVon der Fakulatt Mathematik und Physik der Universit at Stuttgartzur Erlangung der Wurde eines Doktors derNaturwissenschaften (Dr. rer. nat.) genehmigte AbhandlungVorgelegt vonJur gen Rahmeraus BoblingenHauptberichter: Prof. Dr. M. MehringMitberichter: Prof. Dr. D. SchweitzerEingereicht am: 12. Mai 2003Tag der mundlic hen Prufung: 16. Juli 20032. Physikalisches Institut der Universit at Stuttgart20032PrefaceThe proposal of a spherical shape for the carbon cluster C in the middle of the601980s triggered a number of fundamental discoveries. At the outset, these were theclari cation of the singular structural and electronic properties of the “Buckminsterfullerene” C and the larger members of the family of carbon cage molecules. With60theavailabilityofgreateramounts offullerenesthankstotheKratsc hmerarcburningsynthesis, the interest shifted from molecular to solid state properties of C . Crys-60talline C , also referred to as “fullerite”, exhibited new astonishing phenomena, like60the three-dimensional rotation of C within the crystalline structure and the light-60or pressure-induced formation of one- and two-dimensional intra-crystalline fullerenepolymers.TheincorporationofalkaliatomsintothelargeinterstitialspacesinsolidC brought60yet another new discovery: the formation of fullerene charge-transfer salts, so-called“fullerides”.