Charge density waves and Fermi surface reconstruction in the clean overdoped cuprate superconductor Tl2Ba2CuO6+δ

DOI: 10.1038/s41467-022-28124-y

Authors: C. C. Tam (University of Bristol; Diamond Light Source) , M. Zhu (University of Bristol) , J. Ayres (University of Bristol) , K. Kummer (ESRF, The European Synchrotron) , F. Yakhou-Harris (ESRF, The European Synchrotron) , J. R. Cooper (University of Cambridge) , A. Carrington (University of Bristol) , S. M. Hayden (University of Bristol)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Nature Communications , VOL 13

State: Published (Approved)
Published: January 2022

Abstract: Hall effect and quantum oscillation measurements on high temperature cuprate superconductors show that underdoped compositions have small Fermi surface pockets whereas when heavily overdoped, a single much larger pocket is found. The origin of this change in electronic structure has been unclear, but may be related to the high temperature superconductivity. Here we show that the clean overdoped single-layer cuprate Tl2Ba2CuO6+δ (Tl2201) displays CDW order with a remarkably long correlation length ξ ≈ 200 Å which disappears above a hole doping of pCDW ≈ 0.265. We show that the evolution of the electronic properties of Tl2201 as the doping is lowered may be explained by a Fermi surface reconstruction which accompanies the emergence of the CDW below pCDW. Our results demonstrate importance of CDW correlations in understanding the electronic properties of overdoped cuprates.

Journal Keywords: Electronic properties and materials; Phase transitions and critical phenomena; Structure of solids and liquids; Superconducting properties and materials

Subject Areas: Materials, Physics


Technical Areas:

Added On: 31/01/2022 13:46

Documents:
s41467-022-28124-y.pdf

Discipline Tags:

Superconductors Quantum Materials Hard condensed matter - electronic properties Physics Materials Science

Technical Tags: