DPG Phi
Verhandlungen
Verhandlungen
DPG

Berlin 2015 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

TT: Fachverband Tiefe Temperaturen

TT 17: Superconductivity: Properties and Electronic Structure

TT 17.10: Talk

Monday, March 16, 2015, 17:30–17:45, H 2053

Charge density wave fluctuations in La2−xSrxCuO4 and their competition with superconductivity — •Thomas Croft1, Christopher Lester1, Alessandro Bombardi2, Mark Senn2, and Stephen Hayden11H. H. Wills Physics Laboratory, University of Bristol, Bristol, BS8 1TL, United Kingdom — 2Diamond Light Source Ltd., Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, United Kingdom

The recent observations of charge and stripe correlations in YBa2Cu3O6+x and La2−xBaxCuO4 has reinvigorated interest in their role in influencing the superconductivity of the cuprates. However, structural complications of these systems makes it difficult to isolate the effect the lattice has in inducing the charge order.

Here, we report hard x-ray diffraction measurements on three compositions (x=0.11,0.12,0.13) of the high-temperature superconductor La2−xSrxCuO4, a canonical example of HTS with Tc≈ 35 K and a simple crystal structure. All samples show charge-density-wave (CDW) order with onset temperatures in the range 51-80 K and ordering wavevectors close to (0.23,0,0.5). We present a phase diagram of La2−xSrxCuO4 including the pseudogap phase, CDW and magnetic order.

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2015 > Berlin