Anomalies in the Fermi Surface and Band Dispersion of Quasi-One-Dimensional CuO Chains in the High-Temperature Superconductor ${\mathrm{YBa}}_{2}{\mathrm{Cu}}_{4}{\mathrm{O}}_{8}$

Anomalies in the Fermi Surface and Band Dispersion of Quasi-One-Dimensional CuO Chains in the High-Temperature Superconductor ${YBa}_{2} {Cu}_{4} O_{8}$

Takeshi Kondo, R. Khasanov, J. Karpinski, S. M. Kazakov, N. D. Zhigadlo, Z. Bukowski, M. Shi, A. Bendounan, Y. Sassa, J. Chang, S. Pailhés, J. Mesot, J. Schmalian, H. Keller, and A. Kaminski

Phys. Rev. Lett. 105, 267003 – Published 28 December 2010

Abstract

We have investigated the electronic states in quasi-one-dimensional CuO chains by microprobe angle resolved photoemission spectroscopy. We find that the quasiparticle Fermi surface consists of six disconnected segments, consistent with recent theoretical calculations that predict the formation of narrow, elongated Fermi surface pockets for coupled CuO chains. In addition, we find a strong renormalization effect with a significant kink structure in the band dispersion. The properties of this latter effect [energy scale ( $\sim 40 meV$ ), temperature dependence, and behavior with Zn-doping] are identical to those of the bosonic mode observed in ${CuO}_{2}$ planes of high-temperature superconductors, indicating they have a common origin.

Received 23 March 2010

DOI:https://doi.org/10.1103/PhysRevLett.105.267003

Authors & Affiliations

Takeshi Kondo¹, R. Khasanov², J. Karpinski³, S. M. Kazakov³, N. D. Zhigadlo³, Z. Bukowski³, M. Shi⁴, A. Bendounan⁵, Y. Sassa⁵, J. Chang⁵, S. Pailhés⁵, J. Mesot⁵, J. Schmalian¹, H. Keller⁶, and A. Kaminski¹

¹Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA
²Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
³Laboratory for Solid State Physics ETH Zürich, CH-8093 Zürich, Switzerland
⁴Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
⁵Laboratory for Neutron Scattering, ETH Zürich and Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
⁶Physik-Institut der Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland

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Vol. 105, Iss. 26 — 31 December 2010

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Physical Review Letters

Anomalies in the Fermi Surface and Band Dispersion of Quasi-One-Dimensional CuO Chains in the High-Temperature Superconductor YBa2Cu4O8

Takeshi Kondo, R. Khasanov, J. Karpinski, S. M. Kazakov, N. D. Zhigadlo, Z. Bukowski, M. Shi, A. Bendounan, Y. Sassa, J. Chang, S. Pailhés, J. Mesot, J. Schmalian, H. Keller, and A. Kaminski

Phys. Rev. Lett. 105, 267003 – Published 28 December 2010

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Anomalies in the Fermi Surface and Band Dispersion of Quasi-One-Dimensional CuO Chains in the High-Temperature Superconductor ${YBa}_{2} {Cu}_{4} O_{8}$