| Autor: |
Smit, S., Mauri, E., Bawden, L., Heringa, F., Gerritsen, F., van Heumen, E., Huang, Y. K., Kondo, T., Takeuchi, T., Hussey, N. E., Kim, T. K., Cacho, C., Krikun, A., Schalm, K., Stoof, H. T. C., Golden, M. S. |
| Rok vydání: |
2021 |
| Předmět: |
|
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1038/s41467-024-48594-6 |
| Popis: |
The anomalous strange metal phase found in high-$T_c$ cuprates does not follow the conventional condensed-matter principles enshrined in the Fermi liquid and presents a great challenge for theory. Highly precise experimental determination of the electronic self-energy can provide a test bed for theoretical models of strange metals, and angle-resolved photoemission can provide this as a function of frequency, momentum, temperature and doping. Here we show that constant energy cuts through the nodal spectral function in (Pb,Bi)$_{2}$Sr$_{2-x}$La$_x$CuO$_{6+\delta}$ have a non-Lorentzian lineshape, meaning the nodal self-energy is $k$ dependent. We show that the experimental data are captured remarkably well by a power law with a $k$-dependent scaling exponent smoothly evolving with doping, a description that emerges naturally from AdS/CFT-based semi-holography. This puts a spotlight on holographic methods for the quantitative modelling of strongly interacting quantum materials like the cuprate strange metals. |
| Databáze: |
arXiv |
| Externí odkaz: |
|
