Commensurability oscillations and smectic vortex phase transition in YBa2Cu3Oy single crystals

Authors
Zhukov, AA Kupfer, H Perkins, GK Caplin, AD Wolf, T Kugel, KI Rakhmanov, AL Mikheev, MG Voronkova, VI Klaser, M Wuhl, H
Citation
Aa. Zhukov et al., Commensurability oscillations and smectic vortex phase transition in YBa2Cu3Oy single crystals, PHYS REV B, 59(17), 1999, pp. 11213-11216
Citations number
19
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B-CONDENSED MATTER
ISSN journal
01631829 → ACNP
Volume
59
Issue
17
Year of publication
1999
Pages
11213 - 11216
Database
ISI
SICI code
0163-1829(19990501)59:17<11213:COASVP>2.0.ZU;2-4
Abstract
We have studied the oscillations of the magnetization induced by commensura bility between intervortex and CuO plane distances in YBa2Cu3Oy (y = 6.97 /- 0.02) single crystals using high angular resolution magnetometry. A shar p peak in the temperature dependence of the amplitude of oscillations was f ound at T-f similar to 60 K. It is followed by other changes in the behavio r of the amplitude and irreversible magnetization. We suggest that T-f refl ects the vortex freezing transition from smectic to solid phase; the angula r phase diagram is constructed. [S0163-1829(99)08517-3].