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Charge density waves and Fermi surface reconstruction in the clean overdoped cuprate superconductor Tl 2 Ba 2 CuO 6+ δ

Published version
Peer-reviewed

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Abstract

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.

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Keywords

Article, /639/766/119/995, /639/766/119/2795, /639/766/119/1002, /639/766/119/1003, article

Journal Title

Nature Communications

Conference Name

Journal ISSN

2041-1723

Volume Title

13

Publisher

Nature Publishing Group UK
Sponsorship
RCUK | Engineering and Physical Sciences Research Council (EPSRC) (EP/R011141/1)