Controlling Collective Electronic States in Cuprates and Nickelates by Martin Bluschke

Author:Martin Bluschke
Language: eng
Format: epub
ISBN: 9783030479022
Publisher: Springer International Publishing

In the family the intensity of the CDW signal is suppressed upon cooling through , evidencing a competition between the CDW and superconducting phases, consistent with the results of experiments performed on YBaCuO [36]. Similarly, the in-plane correlation length increases with decreasing temperature exhibiting a plateau or slight suppression below . In contrast, the competition between CDW and superconductivity is somewhat reduced for the family, especially with respect to the correlation length (Fig. 4.14). This behaviour is similar to that observed in cuprates such as BiSrLaCuO [42], HgBaCuO [39], and electron-doped NdCeCuO [41] where CDW correlations were observed to be significantly weaker than in YBCO, and little or no competition was observed. By capturing both strong and weak competition in two smoothly connectable cuprate structures (CLBLCO and ), we demonstrate that the reduced competition in the three former compounds may be an inherent feature of weaker CDW correlations rather than some compound specific phenomenology. Possibly for the same reason, the competition between CDW and superconductivity in YBCO is most pronounced in the doping range where CDW order is strongest [36].

Fig. 4.12The charge order rod is measured using -polarized x-rays resonant with the Cu absorption edge. The colour plots are produced by subtracting data measured at 300 K from the same scans performed at 10 K. The panels to the right of the colour plots show the integrated intensity of the map between the dashed white lines (open circles), and a Lorentzian fit to this profile (solid red line). a Data measured on the sample with and . b Data measured on the sample with and . The red dashed lines in the cartoon phase diagrams indicate the approximate position of the two samples with respect to the charge order and superconducting domes

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.