The nonmetal to metal transition with alkali doping of films of molecular icosahedra

Authors

D. N. McIlroy, University of Nebraska–Lincoln
C. Waldfried, University of Nebraska–Lincoln
T. McAvoy, University of Nebraska–Lincoln
Jaewu Choi, University of Nebraska–Lincoln
P. A. Dowben, University of Nebraska–Lincoln
D. Heskett, University of Rhode Island

Document Type

Article

Date of Original Version

1-3-1997

Abstract

Using photoemission, inverse photoemission, and electron energy loss spectroscopy, we have probed the changes in the electronic structure of molecularly adsorbed closo-1,2-dicarbadodecaborane (closo-C2B10H12 or orthocarborane) films as a function of Na doping. The insulator gap of this film of molecular icosahedra closes with Na doping and both new occupied and unoccupied states are introduced. The Na-doped system resembles a Mott-Hubbard insulator, even at high doping levels, and demonstrates the defining role of correlation.

Publication Title, e.g., Journal

Chemical Physics Letters

Volume

264

Issue

1-2

Citation/Publisher Attribution

McIlroy, D. N., C. Waldfried, T. McAvoy, Jaewu Choi, P. A. Dowben, and D. Heskett. "The nonmetal to metal transition with alkali doping of films of molecular icosahedra." Chemical Physics Letters 264, 1-2 (1997): 168-173. doi: 10.1016/S0009-2614(96)01314-0.