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Abstract
We report hard (14 keV) x-ray diffraction measurements on three compositions (x=0.11,0.12,0.13) of the high-temperature superconductor La2−xSrxCuO4.
All samples show charge density wave (CDW) order with onset
temperatures in the range 51–80 K and ordering wave vectors close to
(0.23,0,0.5). The CDW is strongest with the longest in-plane correlation
length near 1/8 doping. On entering the superconducting state the CDW
is suppressed, demonstrating the strong competition between the charge
order and superconductivity. CDW order coexists with incommensurate
magnetic order and the wave vectors of the two modulations have the
simple relationship δcharge=2δspin.
The intensity of the CDW Bragg peak tracks the intensity of the
low-energy (quasielastic) spin fluctuations. We present a phase diagram
of La2−xSrxCuO4 including the pseudogap phase, CDW, and magnetic order.
Original language | English |
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Article number | 224513 |
Number of pages | 8 |
Journal | Physical Review B: Condensed Matter and Materials Physics |
Volume | 89 |
Issue number | 22 |
Early online date | 19 Jun 2014 |
DOIs | |
Publication status | Published - Jun 2014 |
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Dive into the research topics of 'Charge density wave fluctuations in La2-x Srx CuO4 and their competition with superconductivity'. Together they form a unique fingerprint.Projects
- 1 Finished
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Electronic Nematic Phases in Correlated Electron Systems.
Hayden, S. M. (Principal Investigator)
22/06/12 → 22/06/16
Project: Research