THE ELECTRODYNAMIC RESPONSE OF THE ICOSAHEDRAL QUASI-CRYSTAL AL70MN9PD21

Authors
DEGIORGI L CHERNIKOV MA BEELI C OTT HR
Citation
L. Degiorgi et al., THE ELECTRODYNAMIC RESPONSE OF THE ICOSAHEDRAL QUASI-CRYSTAL AL70MN9PD21, Solid state communications, 87(8), 1993, pp. 721-726
Citations number
19
Categorie Soggetti
Physics, Condensed Matter
Journal title
Solid state communications → ACNP
ISSN journal
00381098
Volume
87
Issue
8
Year of publication
1993
Pages
721 - 726
Database
ISI
SICI code
0038-1098(1993)87:8<721:TEROTI>2.0.ZU;2-I
Abstract
We report an optical investigation of single-phase icosahedral Al70Mn9 Pd21 in a very broad frequency range between 14 and 10(5) cm-1. The el ectrodynamic response of this material is characterized by a very low optical conductivity in the infrared and a prominent absorption in the visible frequency range. These unusual optical properties are compati ble with the presence of pseudogaps in the electronic density of state s of quasi-crystalline materials. The implication of the results of ou r ac-response experiments with respect to the thermodynamic and dc-tra nsport results, obtained on the same specimen, are also discussed.