Charge density wave order in optimally doped YBCO-LCMO superlattices
Abstract
We have used resonant x-ray diffraction to investigate the emergence of a charge density wave in a heterostructure comprising optimally doped YBa2Cu3O7 and metallic ferromagnet La2/3Ca1/3MnO3. Such order has been reported in single crystals of YBCO, but thus far only evident in the underdoped regime where the pseudogap phase exists. We show that the CDW, which arises from the charge-transfer across the YBCO-LCMO interface, does not show a suppressed intensity at temperatures below Tc. Together with the lack of external magnetic field effects on the peak intensity, this indicates a full saturation of the CDW order parameter at low temperature. This behavior is discussed in comparison to YBCO single crystals with CDW order, along with the interfacial characteristics of this heterostructure.
Presently at Helmholtz Zentrum Berlin (BESSY).- Publication:
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APS March Meeting Abstracts
- Pub Date:
- March 2014
- Bibcode:
- 2014APS..MARG49006F