Differentiated roles of Lifshitz transition on thermodynamics and superconductivity in La2-xSrxCuO4
Abstract/Contents
- Abstract
- The effect of Lifshitz transition on thermodynamics and superconductivity in hole-doped cuprates has been heavily debated but remains an open question. In particular, an observed peak of electronic specific heat is proposed to originate from fluctuations of a putative quantum critical point p* (e.g. the termination of pseudogap at zero temperature), which is close to, but distinguishable from the Lifshitz transition in overdoped La-based cuprates where the Fermi surface transforms from hole-like to electron-like. Here, we report an in-situ angle-resolved photoemission spectroscopy study of three-dimensional Fermi surfaces in La2-xSrxCuO4 thin films (x = 0.06 – 0.35). With accurate kz dispersion quantification, the said Lifshitz transition is determined to happen within a finite range around x = 0.21. Normal state electronic specific heat, calculated from spectroscopy-derived band parameters, reveals a doping dependent profile with a maximum at x = 0.21 that agrees with previous thermodynamic microcalorimetry measurements. The account of the specific heat maximum by underlying band structures excludes the need for additionally dominant contribution from the quantum fluctuations at p*. A d-wave superconducting gap smoothly across the Lifshitz transition demonstrates the insensitivity of superconductivity to the dramatic density of states enhancement.
Description
| Type of resource | Dataset |
|---|---|
| Date modified | December 5, 2022 |
| Publication date | July 20, 2022; July 20, 2022 |
Creators/Contributors
| Author | Zhong, Yong |
|---|---|
| Author | Chen, Zhuoyu |
| Author | Chen, Su-Di |
| Author | Xu, Ke-Jun |
| Author | Hashimoto, Makoto |
| Author | He, Yu |
| Author | Uchida, Shin-ichi |
| Author | Lu, Donghui |
| Author | Mo, Sung-Kwan |
| Author | Shen, Zhi-Xun |
Subjects
| Subject | cuprates, superconductivity, angle-resolved photoemission spectroscopy, Lifshitz transition |
|---|---|
| Genre | Data |
| Genre | Database |
| Genre | Data sets |
| Genre | Dataset |
| Genre | Databases |
Bibliographic information
Access conditions
- Use and reproduction
- User agrees that, where applicable, content will not be used to identify or to otherwise infringe the privacy or confidentiality rights of individuals. Content distributed via the Stanford Digital Repository may be subject to additional license and use restrictions applied by the depositor.
- License
- This work is licensed under a Creative Commons Attribution 4.0 International license (CC BY).
Preferred citation
- Preferred citation
- Zhong, Y., Chen, Z., Chen, S., Xu, K., Hashimoto, M., He, Y., Uchida, S., Lu, D., Mo, S., and Shen, Z. (2022). Differentiated roles of Lifshitz transition on thermodynamics and superconductivity in La2-xSrxCuO4. Stanford Digital Repository. Available at https://purl.stanford.edu/xm139vq7575
Collection
Stanford Research Data
View other items in this collection in SearchWorksContact information
- Contact
- ylzhong@stanford.edu
Also listed in
Loading usage metrics...