ELECTRON-TRANSPORT PROBES OF ALKALI METAL-DOPED C-60 SINGLE-CRYSTALS

Authors
MARUYAMA Y INABE T OGATA M ACHIBA Y KIKUCHI K SUZUKI S IKEMOTO I
Citation
Y. Maruyama et al., ELECTRON-TRANSPORT PROBES OF ALKALI METAL-DOPED C-60 SINGLE-CRYSTALS, Materials science & engineering. B, Solid-state materials for advanced technology, 19(1-2), 1993, pp. 162-164
Citations number
15
Categorie Soggetti
Material Science","Physics, Condensed Matter
Journal title
Materials science & engineering. B, Solid-state materials for advanced technology → ACNP
ISSN journal
09215107
Volume
19
Issue
1-2
Year of publication
1993
Pages
162 - 164
Database
ISI
SICI code
0921-5107(1993)19:1-2<162:EPOAMC>2.0.ZU;2-Q
Abstract
Electrical transport properties of alkali metal-doped C60 solids were studied. Single crystals obtained from a CS2 solution show a metallic temperature dependence of the resistivity from room temperature to sup erconducting transition temperatures T(c) for samples optimally doped with potassium or rubidium. The thermoelectric power of potassium- or rubidium-doped crystals has a negative value and shows metallic behavi or in the temperature range T(c)-300 K. Based on this result we estima te the Fermi energy E(F) to be 0.30-0.35 eV for a potassium-doped crys tal and 0.19-0.20 eV for a rubidium-doped crystal, assuming a three-di mensional free electron model.