journal article·2025-10-01Open access

Spectroscopic ellipsometry research on the composition-spread La2−xCexCuO4 (0.1 ≤ x ≤ 0.19) film

Yujun Shi, Zhongpei Feng, Mingyang Qin, Zhongxu Wei, Mingyang Wei, Yueming Wang, Yue Chen, Jie Yuan, Kui Jin, Jie Lian

APL Materials· Volume 13· Issue 10

Abstract

In recent decades, the application of high-throughput experimentation has significantly shortened the research period for materials science. However, there remains a critical gap in non-destructive, high-throughput characterization techniques. Spectroscopic ellipsometry (SE) is well-suitable to address this issue, allowing for a focused light spot. In this work, we employ SE to investigate the dielectric properties of an electron-doped cuprate superconductor, La2−xCexCuO4, with continuously varying Ce compositions from 0.1 to 0.19. The Drude fitting parameters from the ordinary part of dielectric tensor εo demonstrate that the free carrier concentration does not linearly increase with Ce doping, while the scattering rate does. In addition, the normalized resistivity values calculated by the Drude parameters are similar to those of the transport results. This work extremely broadens the SE horizon in high-throughput new tracks.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Physics of Superconductivity and Magnetism · ZnO doping and properties · Gas Sensing Nanomaterials and Sensors

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Science, Tianjin University of Commerce 1 , Tianjin 300134,

School of Information Science and Engineering, Shandong University 2 , Qingdao 266237,

Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences 3 , Beijing 100190,

Songshan Lake Materials Laboratory 4 , Dongguan, Guangdong 523808,

Department of Materials Science and Engineering, Southern University of Science and Technology 5 , Shenzhen 518055,

School of Physical Sciences, University of Chinese Academy of Sciences 6 , Beijing 100049,

Funding

National Key Research and Development Program of China · National Natural Science Foundation of China · Young Team of Basic Research of Chinese Academy of Sciences

References (23)

Show source-provided references
1. Fulfilling the promise of the materials genome initiative with high-throughput experimental methodologies10.1063/1.4977487 ↗
2. Accelerating materials discovery: Combinatorial synthesis, high-throughput characterization, and computational advances10.1080/27660400.2023.2292486 ↗
3. Discovery of new materials using combinatorial synthesis and high-throughput characterization of thin-film materials libraries combined with computational methods10.1038/s41524-019-0205-0 ↗
4. Manipulating composition gradient in cuprate superconducting thin films10.1007/s11433-017-9036-x ↗
5. Investigating the impact of growth temperature on the direct integration of pure phase 2H-MoTe2 with Si(1 1 1) using molecular beam epitaxy10.1016/j.apsusc.2024.159832 ↗
6. Microsphere-assisted hyperspectral imaging: Super-resolution, non-destructive metrology for semiconductor devices10.1038/s41377-024-01469-3 ↗
7. Broadband optical properties of Ti3C2 MXene revisited10.1364/ol.503636 ↗
8. Electron-doped superconductor La2−xCexCuO4: Preparation of thin films and modified doping range for superconductivity10.1103/physrevb.66.014531 ↗
9. Phase diagrams on composition-spread FeyTe1−xSex films10.1016/j.scib.2022.06.015 ↗
10. Scaling of the strange-metal scattering in unconventional superconductors10.1038/s41586-021-04305-5 ↗
11. Transport properties of electron-doped La2−xCexCuO4 cuprate thin films10.1103/physrevb.73.104512 ↗
12. Ellipsometric measurement of the dielectric tensor of Nd2−xCexCuO4-δ10.1103/PhysRevB.55.3216 ↗
13. Ellipsometric determination of anisotropic optical constants of single phase Ga2O3 thin films in its orthorhombic and monoclinic phases10.1016/j.optmat.2020.109807 ↗
14. Polarization-dependent optical parameters of arbitrarily anisotropic homogeneous layered systems10.1103/physrevb.53.4265 ↗
15. Anisotropy of optical properties of conjugated polymer thin films by spectroscopic ellipsometry10.1063/1.1610236 ↗
16. Optical properties of bulk and thin-film SrTiO3 on Si and Pt10.1116/1.1303741 ↗
17. Research trends in electron-doped cuprate superconductors10.1007/s11433-015-5701-8 ↗
18. Doping dependence of the ellipsometric spectra of Nd2−xCexCuO4−δ single crystals10.1016/S0921-4534(97)01896-0 ↗
19. Evolution of the pseudogap across the magnet-superconductor phase boundary of Nd2−xCexCuO410.1103/physrevb.75.224514 ↗
20. Quantum critical scaling at the edge of Fermi liquid stability in a cuprate superconductor10.1073/pnas.1120273109 ↗
21. Strange metal electrodynamics across the phase diagram of Bi2−xPbxSr2−yLayCuO6+δ cuprates10.1103/physrevb.106.054515 ↗
22. Doping dependence of scattering rate for linear-in-temperature resistivity in cuprate superconductors10.1103/physrevresearch.6.023194 ↗
23. Counterexample to the conjectured Planckian bound on transport10.1103/physrevb.104.235138 ↗