| Title | Doping-dependent phonon anomaly and charge-order phenomena in the HgBa2CuO4+delta and HgBa2CaCu2O6+delta superconductors |
| Authors | Wang, Lichen Yu, Biqiong Jing, Ran Luo, Xiangpeng Zeng, Junbang Li, Jiarui Bialo, Izabela Bluschke, Martin Tang, Yang Freyermuth, Jacob Yu, Guichuan Sutarto, Ronny He, Feizhou Weschke, Eugen Tabis, Wojciech Greven, Martin Li, Yuan |
| Affiliation | Peking Univ, Int Ctr Quantum Mat, Sch Phys, Beijing 100871, Peoples R China Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, PL-30059 Krakow, Poland TU Wien, Inst Solid State Phys, A-1040 Vienna, Austria Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany Helmholtz Zentrum Berlin Mat & Energie, Wilhelm Conrad Rontgen Campus BESSY 2, D-12489 Berlin, Germany Canadian Light Source, Saskatoon, SK S7N 2V3, Canada Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China Columbia Univ, Dept Phys, New York, NY 10027 USA Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA MIT, Dept Phys, Cambridge, MA 02139 USA |
| Keywords | DENSITY-WAVE ORDER PHASE-DIAGRAM SCATTERING FLUCTUATIONS PSEUDOGAP ENERGY |
| Issue Date | 19-Jun-2020 |
| Publisher | PHYSICAL REVIEW B |
| Abstract | Using resonant x-ray diffraction and Raman spectroscopy, we study charge correlations and lattice dynamics in two model cuprates, HgBa2CuO4+delta and HgBa2CaCu2O6+delta. We observe a maximum of the characteristic charge order temperature around the same hole concentration (p approximate to 0.09) in both compounds, and concomitant pronounced anomalies in the lattice dynamics that involve the motion of atoms in and/or adjacent to the CuO2 layers. These anomalies are already present at room temperature, and therefore precede the formation of the static charge correlations, and we attribute them to an instability of the CuO2 layers. Our finding implies that the charge order in the cuprates is an emergent phenomenon, driven by a fundamental variation in both lattice and electronic properties as a function of doping. |
| URI | http://hdl.handle.net/20.500.11897/589931 |
| ISSN | 2469-9950 |
| DOI | 10.1103/PhysRevB.101.220509 |
| Indexed | SCI(E) |
| Appears in Collections: | 量子材料科学中心 |
