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Title: High-Energy Spin Excitations in the Electron-Doped Superconductor Pr{sub 0.88}LaCe{sub 0.12}CuO{sub 4-{delta}} with T{sub c}=21 K

Abstract

We use high-resolution inelastic neutron scattering to study the low-temperature magnetic excitations of the electron-doping superconductor Pr{sub 0.88}LaCe{sub 0.12}CuO{sub 4-{delta}} (T{sub c}=21{+-}1 K) over a wide energy range (4 meV{<=}({Dirac_h}/2{pi}){omega}{<=}330 meV). The effect of electron doping is to cause a wave vector (Q) broadening in the low-energy (({Dirac_h}/2{pi}){omega}{<=}80 meV) commensurate spin fluctuations at (0.5, 0.5) and to suppress the intensity of spin-wave-like excitations at high energies (({Dirac_h}/2{pi}){omega}{>=}100 meV). This leads to a substantial redistribution in the spectrum of the local dynamical spin susceptibility {chi}{sup ''}({omega}), and reveals a new energy scale similar to that of the lightly hole-doped YB{sub 2}Cu{sub 3}O{sub 6.353} (T{sub c}=18 K)

Authors:
; ;  [1];  [1];  [2];  [3];  [4]; ;  [5]
  1. Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996-1200 (United States)
  2. (United States)
  3. Center for Neutron Scattering, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6393 (United States)
  4. ISIS Facility, Rutherford Appleton Laboratory, Oxon OX11 0QX (United Kingdom)
  5. Central Research Institute of Electric Power Industry, Komae, Tokyo 201-8511 (Japan)
Publication Date:
OSTI Identifier:
20777157
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 96; Journal Issue: 15; Other Information: DOI: 10.1103/PhysRevLett.96.157001; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CERIUM COMPOUNDS; CUPRATES; DOPED MATERIALS; ELECTRONS; EXCITATION; HIGH-TC SUPERCONDUCTORS; INELASTIC SCATTERING; LANTHANUM COMPOUNDS; MEV RANGE 10-100; MEV RANGE 100-1000; NEUTRON DIFFRACTION; PRASEODYMIUM COMPOUNDS; SPIN; SPIN WAVES; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0013-0065 K

Citation Formats

Wilson, Stephen D., Li Shiliang, Woo, Hyungje, Dai, Pengcheng, Center for Neutron Scattering, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6393, Mook, H.A., Frost, C.D., Komiya, Seiki, and Ando, Yoichi. High-Energy Spin Excitations in the Electron-Doped Superconductor Pr{sub 0.88}LaCe{sub 0.12}CuO{sub 4-{delta}} with T{sub c}=21 K. United States: N. p., 2006. Web. doi:10.1103/PhysRevLett.96.157001.
Wilson, Stephen D., Li Shiliang, Woo, Hyungje, Dai, Pengcheng, Center for Neutron Scattering, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6393, Mook, H.A., Frost, C.D., Komiya, Seiki, & Ando, Yoichi. High-Energy Spin Excitations in the Electron-Doped Superconductor Pr{sub 0.88}LaCe{sub 0.12}CuO{sub 4-{delta}} with T{sub c}=21 K. United States. doi:10.1103/PhysRevLett.96.157001.
Wilson, Stephen D., Li Shiliang, Woo, Hyungje, Dai, Pengcheng, Center for Neutron Scattering, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6393, Mook, H.A., Frost, C.D., Komiya, Seiki, and Ando, Yoichi. Fri . "High-Energy Spin Excitations in the Electron-Doped Superconductor Pr{sub 0.88}LaCe{sub 0.12}CuO{sub 4-{delta}} with T{sub c}=21 K". United States. doi:10.1103/PhysRevLett.96.157001.
@article{osti_20777157,
title = {High-Energy Spin Excitations in the Electron-Doped Superconductor Pr{sub 0.88}LaCe{sub 0.12}CuO{sub 4-{delta}} with T{sub c}=21 K},
author = {Wilson, Stephen D. and Li Shiliang and Woo, Hyungje and Dai, Pengcheng and Center for Neutron Scattering, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6393 and Mook, H.A. and Frost, C.D. and Komiya, Seiki and Ando, Yoichi},
abstractNote = {We use high-resolution inelastic neutron scattering to study the low-temperature magnetic excitations of the electron-doping superconductor Pr{sub 0.88}LaCe{sub 0.12}CuO{sub 4-{delta}} (T{sub c}=21{+-}1 K) over a wide energy range (4 meV{<=}({Dirac_h}/2{pi}){omega}{<=}330 meV). The effect of electron doping is to cause a wave vector (Q) broadening in the low-energy (({Dirac_h}/2{pi}){omega}{<=}80 meV) commensurate spin fluctuations at (0.5, 0.5) and to suppress the intensity of spin-wave-like excitations at high energies (({Dirac_h}/2{pi}){omega}{>=}100 meV). This leads to a substantial redistribution in the spectrum of the local dynamical spin susceptibility {chi}{sup ''}({omega}), and reveals a new energy scale similar to that of the lightly hole-doped YB{sub 2}Cu{sub 3}O{sub 6.353} (T{sub c}=18 K)},
doi = {10.1103/PhysRevLett.96.157001},
journal = {Physical Review Letters},
number = 15,
volume = 96,
place = {United States},
year = {Fri Apr 21 00:00:00 EDT 2006},
month = {Fri Apr 21 00:00:00 EDT 2006}
}