Doping-dependent electronic structure of cuprates studied using angle-scanned photoemission

Schwaller, Patrick; Greber, T.; Aebi, P.; Singer, J.M.; Berger, H.; Forró, L.; Osterwalder, J. (2000). Doping-dependent electronic structure of cuprates studied using angle-scanned photoemission The European Physical Journal B, 18(2), pp. 215-225. Springer 10.1007/s100510070051

[img]
Preview
Text
Doping-dependent electronic structure of cuprates studied using angle-scanned photoemission.pdf - Published Version
Available under License Publisher holds Copyright (National Licenses).

Download (421kB) | Preview

Full k-maps of the electronic structure near the Fermi level of differently doped cuprates measured with angle-scanned photoelectron spectroscopy are presented. The valence band maximum of the antiferromagnetic insulator Sr2CuO2Cl2, which is taken as a representative of an undoped cuprate, and the Fermi surfaces of overdoped, optimally doped and underdoped Bi2Sr2CaCu2O8+δ high-temperature superconductors are mapped in the normal state. The results confirm the existence of large Luttinger Fermi surfaces at high doping with a Fermi surface volume proportional to (1+x), where x is the hole concentration. At very low doping, however, we find that this assumption based on Luttinger's theorem is not fulfilled. This implies a change in the topology of the Fermi surface. Furthermore the intensity of the shadow bands observed on the Fermi surface of Bi2Sr2CaCu2O8+δ as a function of the doping is discussed.

Item Type:

Journal Article (Original Article)

Division/Institute:

Engineering and Information Technology > Institute for Surface Applied Laser, Phototonics and Surface Technologies ALPS
Engineering and Information Technology

Name:

Schwaller, Patrick;
Greber, T.;
Aebi, P.;
Singer, J.M.;
Berger, H.;
Forró, L. and
Osterwalder, J.

ISSN:

1434-6028

Publisher:

Springer

Language:

English

Submitter:

Patrick Schwaller

Date Deposited:

10 Dec 2019 10:56

Last Modified:

18 Aug 2020 11:41

Publisher DOI:

10.1007/s100510070051

ARBOR DOI:

10.24451/arbor.9294

URI:

https://arbor.bfh.ch/id/eprint/9294

Actions (login required)

View Item View Item
Provide Feedback