In situ electrical conductivity and Raman study of C-60 tetragonal polymer at high pressures up to 30 GPa / Mases Mattias,You Shujie,Weir Samuel T.,Evans William J.,Volkova Yana,Tebenkov Alexander,Babushkin Alexey N.,Vohra Yogesh K.,Samudrala G.,Soldatov Alexander V. // PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS. - 2010. - V. 247, l. 11-12. - P. 3068-3071.

ISSN/EISSN:

0370-1972 / нет данных

Type:

Article; Proceedings Paper

Abstract:

Theory predicts that tetragonal polymeric C-60 will undergo a phase transition into a metallic phase at pressures around 20 GPa. Raman and structural experiments at high pressures confirmed formation of a new phase above 20 GPa although the question about its electrical properties was still open. We report on the first simultaneous in situ study of vibrational and electrical properties of two-dimensional (2D) tetragonal C-60 polymer at pressures up to 30 GPa in a diamond anvil cell (DAC) specially designed for this purpose. Our results reveal an anomaly in Raman spectra and a drop in electrical resistance of the sample at 20-25 GPa. We tentatively associate this anomalous behaviour with a phase transition into the conductive phase although its metallic character is yet to be proven. At high pressures the Raman spectra exhibit a high degree of disorder. Upon pressure release the order was partially restored and, more importantly, a significant amount of the initial 2D polymeric phase was recovered. (C) 2010 WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim

Author keywords:

conductivity; C-60 polymer; high pressure; Raman spectroscopy SOLID C-60; AMORPHIZATION; FULLERITE; CARBON

DOI:

10.1002/pssb.201000298

Web of Science ID:

ISI:000285798400102

Соавторы в МНС:

Другие поля

Поле	Значение
Month	DEC
Note	24th International WinterSchool on Electronic Properties of Novel Materials - Molecular Nanostructures (IWEPNM 2010), Kirchberg/Tirol, AUSTRIA, MAR 06-13, 2010
Organization	Appl Nanofluorescence; Bruker Opt; Graphene Ind Ltd; HORIBA Jobin Yvon GmbH; NACALAI TESQUE, INC; SINEUROP Nanotech GmbH; Wiley-VCH Verlag GmbH \& Co.
Publisher	WILEY-BLACKWELL
Address	COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA
Language	English
Keywords-Plus	SOLID C-60; AMORPHIZATION; FULLERITE; CARBON
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
Author-Email	alexander.soldatov@ltu.se
ResearcherID-Numbers	Tebenkov, Alexander/M-7667-2016 Weir, Samuel/H-5046-2012 Babushkin, Alexey/M-8198-2016
ORCID-Numbers	Tebenkov, Alexander/0000-0001-9721-0095 Soldatov, Alexander/0000-0002-5145-1560
Number-of-Cited-References	11
Usage-Count-Since-2013	19
Journal-ISO	Phys. Status Solidi B-Basic Solid State Phys.
Doc-Delivery-Number	701EZ