Magnetic field controlled charge density wave coupling in underdoped YBa2Cu3O6+x

被引：133

作者：

Chang, J. ^{[1
]}

Blackburn, E. ^{[2
]}

Ivashko, O. ^{[1
]}

Holmes, A. T. ^{[3
]}

Christensen, N. B. ^{[4
]}

Huecker, M. ^{[5
]}

Liang, Ruixing ^{[6
,7
]}

Bonn, D. A. ^{[6
,7
]}

Hardy, W. N. ^{[6
,7
]}

Ruett, U. ^{[8
]}

Zimmermann, M. v. ^{[8
]}

Forgan, E. M. ^{[2
]}

Hayden, S. M. ^{[9
]}

机构：

[1] Univ Zurich, Inst Phys, Winterthurerstr 190, CH-8057 Zurich, Switzerland

[2] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England

[3] European Spallat Source ERIC, Box 176, SE-22100 Lund, Sweden

[4] Tech Univ Denmark, Dept Phys, DK-2800 Lyngby, Denmark

[5] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA

[6] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada

[7] Canadian Inst Adv Res, Toronto, ON M5G 1Z8, Canada

[8] Deutsch Elektronen Synchrotron DESY, D-22603 Hamburg, Germany

[9] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England

来源：

NATURE COMMUNICATIONS | 2016年 / 7卷

基金：

英国工程与自然科学研究理事会; 瑞士国家科学基金会;

关键词：

FERMI-SURFACE; STRIPE ORDER; STATE; FLUCTUATIONS; PSEUDOGAP;

D O I：

10.1038/ncomms11494

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The application of magnetic fields to layered cuprates suppresses their high-temperature superconducting behaviour and reveals competing ground states. In widely studied underdoped YBa2Cu3O6+x (YBCO), the microscopic nature of field-induced electronic and structural changes at low temperatures remains unclear. Here we report an X-ray study of the high-field charge density wave (CDW) in YBCO. For hole dopings similar to 0.123, we find that a field (B similar to 10 T) induces additional CDW correlations along the CuO chain (b-direction) only, leading to a three-dimensional (3D) ordered state along this direction at B similar to 15 T. The CDW signal along the a-direction is also enhanced by field, but does not develop an additional pattern of correlations. Magnetic field modifies the coupling between the CuO2 bilayers in the YBCO structure, and causes the sudden appearance of the 3D CDW order. The mirror symmetry of individual bilayers is broken by the CDW at low and high fields, allowing Fermi surface reconstruction, as recently suggested.

引用

页数：7

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