Shift of the Fermi level during cointercalation of copper and iron into TiSe(2) / Titov A. A.,Titov A. N.,Bushkova O. V.,Tsurin V. A. // PHYSICS OF THE SOLID STATE. - 2010. - V. 52, l. 8. - P. 1577-1584.

ISSN/EISSN:

1063-7834 / нет данных

Type:

Article

Abstract:

The influence of copper intercalation into the TiSe(2) compound on the Fermi energy has been investigated using two independent methods. The first method is based on the analysis of the amplitude of the deformation (induced by impurity intercalation and providing the formation of polarons) as a function of the binding energy of the band of polaron states. For this purpose, the Fe (x) Cu (y) TiSe(2) system has been synthesized for the first time by cointercalation of copper and iron into the TiSe(2) lattice and studied. The second method consists in measuring the electromotive force of an open-circuit electrochemical cell with respect to a metal reference electrode. Both methods lead to consistent results in the range of moderate copper contents. However, considerable discrepancies have been observed in the copper concentration range that corresponds to the beginning of filling of Cu/Ti hybrid states. These discrepancies are explained by the softening of the lattice due to an increase in the density of states at the Fermi level.

Author keywords:

POLARON BAND COLLAPSE; TITANIUM DICHALCOGENIDES; INTERCALATION COMPOUNDS

DOI:

10.1134/S1063783410080032

Web of Science ID:

ISI:000280701600003

Соавторы в МНС:

Другие поля

Поле	Значение
Month	AUG
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Keywords-Plus	POLARON BAND COLLAPSE; TITANIUM DICHALCOGENIDES; INTERCALATION COMPOUNDS
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
Author-Email	A.A.Titov@mail.ru
ResearcherID-Numbers	Titov, Alexander/K-4328-2013 Titov, Alexey/K-8693-2013
ORCID-Numbers	Titov, Alexander/0000-0003-3636-2604 Titov, Alexey/0000-0001-5643-1975 Bushkova, Olga/0000-0003-2230-5705
Funding-Acknowledgement	Russian Foundation for Basic Research {[}09-03-00053-a, 09-08-00073-a]; Russian Science Support Foundation; Ural Branch of the Russian Academy of Sciences {[}36]
Funding-Text	This study was supported by the Russian Foundation for Basic Research (project nos. 09-03-00053-a, 09-08-00073-a), the Russian Science Support Foundation, and the Ural Branch of the Russian Academy of Sciences within the State Target Program for Support of Interdisciplinary Projects (project no. 36).
Number-of-Cited-References	18
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	8
Journal-ISO	Phys. Solid State
Doc-Delivery-Number	636BB