1999/10/21 by Jong E. Han, J. E. Han, Erik Koch +3 · 3 citations
Chemistry · Decision Sciences · Materials Science · Physics and Astronomy · #Advanced Chemical Physics Studies #Condensed matter physics #Coulomb #Coupling (piping) #Economic growth #Economics #Electron #Fullerene Chemistry and Applications #Higher education #Insulator (electricity) #Ion #Jahn–Teller effect #Lattice (music) #Law #Materials science #Metal #Metal–insulator transition #Organic and Molecular Conductors Research #Pedagogy #Phonon #Physics #Political science #Public relations #Quantum mechanics #Research, Science, and Academia #Sociology #Tribe #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.84.1276
published as Phys. Rev. Lett. 84, 1276 (2000) · 4 pages, RevTeX, 3 eps figure, additional material available at http://www.mpi-stuttgart.mpg.de/docs/ANDERSEN/fullerene/
arxiv created 1999/10/21 · openalex publication_date 2007/06/08 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/04/28
We study the influence of the lattice structure, the Jahn-Teller effect, and the Hund's rule coupling on a metal-insulator transition in A(n)C60 (A = K,Rb). The difference in the lattice structure favors A3C60 (fcc) being a metal and A4C60 (bct) being an insulator, and the coupling to H(g) Jahn-Teller phonons favors A4C60 being nonmagnetic. The coupling to H(g) ( A(g)) phonons decreases (increases) the value U(c) of the Coulomb integral at which the metal-insulator transition occurs. There is an important partial cancellation between the Jahn-Teller effect and the Hund's rule coupling.