SEARCH FOR MUONIUM STATES IN BN, WS2 AND CARBON NANOTUBES

Authors
ANSALDO EJ
Citation
Ej. Ansaldo, SEARCH FOR MUONIUM STATES IN BN, WS2 AND CARBON NANOTUBES, Hyperfine interactions, 86(1-4), 1994, pp. 825-829
Citations number
9
Categorie Soggetti
Physics, Atomic, Molecular & Chemical","Physics, Nuclear","Physics, Condensed Matter
Journal title
Hyperfine interactions → ACNP
ISSN journal
03043843
Volume
86
Issue
1-4
Year of publication
1994
Pages
825 - 829
Database
ISI
SICI code
0304-3843(1994)86:1-4<825:SFMSIB>2.0.ZU;2-F
Abstract
A sizable missing fraction was found for semiconductors (cubic) BN and (hexagonal) WS2. A repolarization measurement at room temperature yie lded a high hyperfine frequency for the dominant muonium signal in BN. The missing fraction in carbon nanotubes with average 20 nm outer dia meter was less than 4% at temperatures above 5 K, with very small rela xation in transverse and longitudinal fields, indicating that such tub ulenes are microscopically (semi-)metals or small-gap semiconductors, non-magnetic and non-superconducting.