Přístupnostní navigace
E-přihláška
Vyhledávání Vyhledat Zavřít
Detail publikace
SINGER, A. PATEL, S. UHLÍŘ, V. KUKREJA, R. ULVESTAD, A. DUFRESNE, E. SANDY, A. FULLERTON, E. SHPYRKO, O.
Originální název
Phase coexistence and pinning of charge density waves by interfaces in chromium
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
We study the temperature dependence of the charge density wave (CDW) in a chromium thin film using x-ray diffraction. We exploit the interference between the CDW satellite peaks and Laue oscillations to determine the amplitude, the phase, and the period of the CDW. We find discrete half-integer periods of CDW in the film and switching of the number of periods by one upon cooling/heating with a thermal hysteresis of 20 K. The transition between different CDW periods occurs over a temperature range of 30 K, slightly larger than the width of the thermal hysteresis. A comparison with simulations shows that the phase transition occurs as a variation of the volume fraction of two distinct phases with well-defined periodicities. The phase of the CDW is constant for all temperatures, and we attribute it to strong pinning of the CDW by the mismatch-induced strain at the film-substrate interface.
Klíčová slova
Charge density waves; Chromium; Phase transition; Thin Films; X-ray diffraction
Autoři
SINGER, A.; PATEL, S.; UHLÍŘ, V.; KUKREJA, R.; ULVESTAD, A.; DUFRESNE, E.; SANDY, A.; FULLERTON, E.; SHPYRKO, O.
Vydáno
16. 11. 2016
ISSN
1098-0121
Periodikum
PHYSICAL REVIEW B
Ročník
94
Číslo
17
Stát
Spojené státy americké
Strany od
174110-1
Strany do
174110-5
Strany počet
5
URL
http://doi.org/10.1103/PhysRevB.94.174110