Cascading transitions toward unconventional charge density wave states in the quasi-two-dimensional monophosphate tungsten bronze P4W16O56 - Publication - MOST Wiedzy

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Cascading transitions toward unconventional charge density wave states in the quasi-two-dimensional monophosphate tungsten bronze P4W16O56

Abstract

Single crystals of the m = 8 member of the low-dimensional monophosphate tungsten bronzes (PO2)4(WO3)2m family were grown by chemical vapour transport technique and the high crystalline quality obtained allowed a reinvestigation of the physical and structural properties. Resistivity measurements revealed three anomalies at TC1 = 258 K, TC2 = 245 K and TC3 = 140 K, never observed until now. Parallel X-ray diffraction investigations showed a specific signature associated with three structural transitions, i.e. the appearance of different sets of satellite reflections below TC1, TC2 and TC3. Several harmonics of intense satellite reflections were observed, reflecting the non-sinusoidal nature of the structural modulations and a strong electron–phonon coupling in the material. These transitions could be associated with the formation of three successive unconventional charge density wave states.

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Details

Category:
Articles
Type:
artykuły w czasopismach
Published in:
IUCrJ no. 7, pages 184 - 192,
ISSN: 2052-2525
Language:
English
Publication year:
2020
Bibliographic description:
Duverger-Nédellec E., Pautrat A., Kolincio K., Hervé L., Pérez O.: Cascading transitions toward unconventional charge density wave states in the quasi-two-dimensional monophosphate tungsten bronze P4W16O56// IUCrJ -Vol. 7,iss. 2 (2020), s.184-192
DOI:
Digital Object Identifier (open in new tab) 10.1107/s2052252519016695
Verified by:
Gdańsk University of Technology

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