Magnetic resonance in the model high-temperature superconductor HgBa2CuO4+δ

G. Yu, Y. Li, E. M. Motoyama, X. Zhao, N. Barišić, Y. Cho, P. Bourges, K. Hradil, R. A. Mole, and M. Greven
Phys. Rev. B 81, 064518 – Published 26 February 2010

Abstract

Inelastic neutron-scattering measurements of single-CuO2-layer HgBa2CuO4+δ reveal an antiferromagnetic resonance with energy ωr=56meV (6.8kBTc) below the superconducting transition temperature Tc96K. The resonance is energy-resolution limited and exhibits an intrinsic momentum width of about 0.2Å1, consistent with prior work on several other cuprates. The rather large value of ωr is identical to the characteristic energy of the electron-boson spectral density obtained from recent optical conductivity work, consistent with the notion that the charge carriers are strongly coupled to magnetic fluctuations.

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  • Received 8 September 2009

DOI:https://doi.org/10.1103/PhysRevB.81.064518

©2010 American Physical Society

Authors & Affiliations

G. Yu1, Y. Li1, E. M. Motoyama1, X. Zhao2,3, N. Barišić2,4, Y. Cho2,5, P. Bourges6, K. Hradil7, R. A. Mole8, and M. Greven9,10

  • 1Department of Physics, Stanford University, Stanford, California 94305, USA
  • 2Stanford Synchrotron Radiation Laboratory, Stanford, California 94309, USA
  • 3State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, People’s Republic of China
  • 41. Physikalisches Institut, Universität Stuttgart, 70550 Stuttgart, Germany
  • 5Department of Nano Fusion Technology, Pusan National University, Miryang 627-706, Republic of Korea
  • 6Laboratoire Léon Brillouin, CEA-CNRS, CEA-Saclay, 91191 Gif-sur-Yvette, France
  • 7Institut für Physikalische Chemie, Universität Göttingen, 37077 Göttingen, Germany
  • 8Forschungsneutronenquelle Heinz Maier-Leibnitz, 85747 Garching, Germany
  • 9School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
  • 10Department of Applied Physics, Stanford University, Stanford, California 94305, USA

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Vol. 81, Iss. 6 — 1 February 2010

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