Stability of the polaron form of charge carrier localization in misfit titanium disulfide compounds / Titov A. N. // PHYSICS OF THE SOLID STATE. - 2008. - V. 50, l. 6. - P. 1144-1149.

ISSN/EISSN:

1063-7834 / нет данных

Type:

Article

Abstract:

The behavior of the thermodynamic functions of the silver-intercalated isostructural misfit compounds AgxPbTi2S5 and AgxGdTi2S5 is studied. The region of instability of the homogeneous state, which is typical of materials with less than half-filled polaron band, is revealed in the phase diagram of AgxPbTi2S5. It is shown that the substitution of GdS for PbS gives rise to charge transfer to the TiS2 sublattice, which fills the polaron band above the critical level and suppresses this instability. The behavior of the entropy of silver in both materials fits well the proposed polaron band filling model. It is demonstrated that the peak of the entropy near the boundary of stability of the homogeneous state is universal in character for materials with polaron-type carriers and that it can be associated with a strong variation in the density of states at the Fermi level upon polaron band filling.

Author keywords:

INTERCALATION COMPOUNDS; ELECTRICAL-PROPERTIES; SEMIMETAL TRANSITION; LAYER COMPOUNDS; HIGH-PRESSURE; SEMICONDUCTOR; DISELENIDE; CRYSTALS; SHIFT; TIS2

DOI:

10.1134/S1063783408060243

Web of Science ID:

ISI:000256779300024

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JUN
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Keywords-Plus	INTERCALATION COMPOUNDS; ELECTRICAL-PROPERTIES; SEMIMETAL TRANSITION; LAYER COMPOUNDS; HIGH-PRESSURE; SEMICONDUCTOR; DISELENIDE; CRYSTALS; SHIFT; TIS2
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
Author-Email	alexander.titov@usu.ru
ResearcherID-Numbers	Titov, Alexander/K-4328-2013
ORCID-Numbers	Titov, Alexander/0000-0003-3636-2604
Number-of-Cited-References	20
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	8
Journal-ISO	Phys. Solid State
Doc-Delivery-Number	313ZU