Journal article · Preprint article
Distinct Nature of Static and Dynamic Magnetic Stripes in Cuprate Superconductors
University of Copenhagen1
Institut Max von Laue-Paul Langevin2
Department of Physics, Technical University of Denmark3
Neutrons and X-rays for Materials Physics, Department of Physics, Technical University of Denmark4
Department of Energy Conversion and Storage, Technical University of Denmark5
Electrofunctional materials, Department of Energy Conversion and Storage, Technical University of Denmark6
Technical University of Denmark7
University of Connecticut8
We present detailed neutron scattering studies of the static and dynamic stripes in an optimally doped high-Temperature superconductor, La2CuO4+y. We observe that the dynamic stripes do not disperse towards the static stripes in the limit of vanishing energy transfer. Therefore, the dynamic stripes observed in neutron scattering experiments are not the Goldstone modes associated with the broken symmetry of the simultaneously observed static stripes, and the signals originate from different domains in the sample.
These observations support real-space electronic phase separation in the crystal, where the static stripes in one phase are pinned versions of the dynamic stripes in the other, having slightly different periods. Our results explain earlier observations of unusual dispersions in underdoped La2-xSrxCuO4 (x=0.07) and La2-xBaxCuO4 (x=0.095).
| Language: | English |
|---|---|
| Year: | 2018 |
| Pages: | 037003 |
| ISSN: | 10797114 and 00319007 |
| Types: | Journal article and Preprint article |
| DOI: | 10.1103/PhysRevLett.120.037003 |
| ORCIDs: | Toft-Petersen, Rasmus , Grivel, Jean-Claude , 0000-0003-4118-5702 , 0000-0003-1942-3380 , 0000-0003-4719-2356 , 0000-0002-2816-6825 and 0000-0003-4282-756X |
