Momentum-space electronic structures and charge orders of the high-temperature superconductors Ca2−xNaxCuO2Cl2 and Bi2Sr2CaCu2O8+δ

Jian-Qiao Meng; M. Brunner; K.-H. Kim; H.-G. Lee; S.-I. Lee; J. S. Wen; Z. J. Xu; G. D. Gu; G.-H. Gweon

doi:10.1103/PhysRevB.84.060513

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Momentum-space electronic structures and charge orders of the high-temperature superconductors Ca2−xNaxCuO2Cl2 and Bi2Sr2CaCu2O8+δ

Jian-Qiao Meng, M. Brunner, K.-H. Kim, H.-G. Lee, S.-I. Lee, J. S. Wen, Z. J. Xu, G. D. Gu, G.-H. Gweon

DOI 10.1103/PhysRevB.84.060513 · Physical Review B

T1

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Abstract

We study the electronic structure of Ca2−xNaxCuO2Cl2 and Bi2Sr2CaCu2O8+δ samples in a wide range of doping, using angle-resolved photoemission spectroscopy, with emphasis on the Fermi surface (FS) in the near antinodal region. The “nesting wave vector,” i.e., the wave vector that connects two nearly flat pieces of the FS in the antinodal region, reveals a universal monotonic decrease in magnitude as a function of doping. Comparing our results to the charge order recently observed by scanning tunneling spectroscopy (STS), we conclude that the FS nesting and the charge order pattern seen in STS do not have a direct relationship. Therefore, the charge order likely arises due to strong-correlation physics rather than FS nesting physics.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Ca2-xNaxCuO2Cl2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	18	Pressure not reported	unknown
Ca2-xNaxCuO2Cl2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	21	Pressure not reported	unknown
Ca2-xNaxCuO2Cl2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	27	Pressure not reported	unknown
Ca2-xNaxCuO2Cl2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	20	Pressure not reported	unknown
Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	74	Pressure not reported	unknown
Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	91	Pressure not reported	unknown
Bi2-yPbySr2-zLazCuO6+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown