التفاصيل البيبلوغرافية
| العنوان: |
Periodic Atomic Displacements and Visualization of the Electron-Lattice Interaction in the Cuprate |
| المؤلفون: |
Zengyi Du, Hui Li, Genda Gu, Abhay N. Pasupathy, John M. Tranquada, Kazuhiro Fujita |
| المصدر: |
Physical Review X, Vol 13, Iss 2, p 021025 (2023) |
| بيانات النشر: |
American Physical Society, 2023. |
| سنة النشر: |
2023 |
| المجموعة: |
LCC:Physics |
| مصطلحات موضوعية: |
Physics, QC1-999 |
| الوصف: |
Traditionally, x-ray scattering techniques have been used to detect the breaking of the structural symmetry of the lattice, which accompanies a periodic displacement of the atoms associated with charge density wave (CDW) formation in the cuprate pseudogap states. Similarly, spectroscopic imaging scanning tunneling microscopy (STM) has visualized the short-range CDW. However, local coupling of electrons to the lattice in the form of a short-range CDW has been a challenge to visualize; thus, a link between these measurements has been missing. Here, we introduce a novel STM-based technique to visualize the local bond-length variations obtained from topographic imaging with picometer precision. Application of this technique to the high-T_{c} cuprate superconductor Bi_{2}Sr_{2}CaCu_{2}O_{8+δ} reveals a high-fidelity local lattice distortion of the BiO lattice as large as 2%. In addition, analysis of local breaking of rotational symmetry associated with the bond lengths reveals modulations around four-unit-cell periodicity in both B_{1} and E representations in the C_{4v} group of the lattice, which coincides with the unidirectional d-symmetry CDW (dCDW) previously identified within the CuO_{2} planes, thus providing direct evidence of electron-lattice coupling in the pseudogap state and a link between the x-ray scattering and STM measurements. Overall, our results suggest that the periodic lattice displacements in E representations correspond to a locally frozen version of the soft phonons identified by the x-ray scattering measurements, and a fluctuation of the bond length is reflected by the fluctuation of the dCDW formation near the quantum critical point. |
| نوع الوثيقة: |
article |
| وصف الملف: |
electronic resource |
| اللغة: |
English |
| تدمد: |
2160-3308 |
| Relation: |
https://doaj.org/toc/2160-3308 |
| DOI: |
10.1103/PhysRevX.13.021025 |
| URL الوصول: |
https://doaj.org/article/7b2aafdb80b44aafb2366e091e799a1d |
| رقم الانضمام: |
edsdoj.7b2aafdb80b44aafb2366e091e799a1d |
| قاعدة البيانات: |
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