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Title: Resonant inelastic X-ray scattering study of spin-wave excitations in the cuprate parent compound Ca 2CuO 2Cl 2

Abstract

By means of resonant inelastic x-ray scattering at the Cu L 3 edge, we measured the spin wave dispersion along <100> and <110> in the undoped cuprate Ca 2CuO 2Cl 2. The data yields a reliable estimate of the superexchange parameter J = 135 ± 4 meV using a classical spin-1/2 2D Heisenberg model with nearest-neighbor interactions and including quantum fluctuations. Including further exchange interactions increases the estimate to J = 141 meV. The 40 meV dispersion between the magnetic Brillouin zone boundary points (1/2, 0) and (1/4, 1/4) indicates that next-nearest neighbor interactions in this compound are intermediate between the values found in La 2CuO 4 and Sr 2CuO 2Cl 2. Here by owing to the low- Z elements composing Ca 2CuOCl 2, the present results may enable a reliable comparison with the predictions of quantum many-body calculations, which would improve our understanding of the role of magnetic excitations and of electronic correlations in cuprates.

Authors:
 [1];  [2];  [3];  [4];  [4];  [4];  [5];  [5];  [6];  [2];  [7];  [7];  [7]
  1. Univ. Pierre et Marie Curie, Paris (France); Synchrotron SOLEIL, Gif-sur-Yvette Cedex (France)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Synchrotron SOLEIL, Gif-sur-Yvette Cedex (France)
  4. Paul Scherrer Inst. (PSI), Villigen (Switzerland)
  5. Tokyo Institute of Technology, Yokohama (Japan)
  6. CEA-Saclay, Gif-sur-Yvette (France); Karlsruhe Institute of Technology, Karlsruhe (Germany)
  7. Univ. Pierre et Marie Curie, Paris (France)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1348292
Alternate Identifier(s):
OSTI ID: 1350791
Report Number(s):
BNL-113677-2017-JA
Journal ID: ISSN 2469-9950; R&D Project: PO011; KC0201060; TRN: US1700546
Grant/Contract Number:  
SC00112704; 1047478
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 95; Journal Issue: 15; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; superconductivity; hole-doped cuprate; inelastic X-ray scattering

Citation Formats

Lebert, B. W., Dean, M., Nicolaou, A., Pelliciari, J., Dantz, M., Schmitt, T., Yu, R., Azuma, M., Castellan, J. -P., Miao, H., Gauzzi, A., Baptiste, B., and d'Astuto, Matteo. Resonant inelastic X-ray scattering study of spin-wave excitations in the cuprate parent compound Ca2CuO2Cl2. United States: N. p., 2017. Web. doi:10.1103/PhysRevB.95.155110.
Lebert, B. W., Dean, M., Nicolaou, A., Pelliciari, J., Dantz, M., Schmitt, T., Yu, R., Azuma, M., Castellan, J. -P., Miao, H., Gauzzi, A., Baptiste, B., & d'Astuto, Matteo. Resonant inelastic X-ray scattering study of spin-wave excitations in the cuprate parent compound Ca2CuO2Cl2. United States. doi:10.1103/PhysRevB.95.155110.
Lebert, B. W., Dean, M., Nicolaou, A., Pelliciari, J., Dantz, M., Schmitt, T., Yu, R., Azuma, M., Castellan, J. -P., Miao, H., Gauzzi, A., Baptiste, B., and d'Astuto, Matteo. Fri . "Resonant inelastic X-ray scattering study of spin-wave excitations in the cuprate parent compound Ca2CuO2Cl2". United States. doi:10.1103/PhysRevB.95.155110. https://www.osti.gov/servlets/purl/1348292.
@article{osti_1348292,
title = {Resonant inelastic X-ray scattering study of spin-wave excitations in the cuprate parent compound Ca2CuO2Cl2},
author = {Lebert, B. W. and Dean, M. and Nicolaou, A. and Pelliciari, J. and Dantz, M. and Schmitt, T. and Yu, R. and Azuma, M. and Castellan, J. -P. and Miao, H. and Gauzzi, A. and Baptiste, B. and d'Astuto, Matteo},
abstractNote = {By means of resonant inelastic x-ray scattering at the Cu L3 edge, we measured the spin wave dispersion along <100> and <110> in the undoped cuprate Ca2CuO2Cl2. The data yields a reliable estimate of the superexchange parameter J = 135 ± 4 meV using a classical spin-1/2 2D Heisenberg model with nearest-neighbor interactions and including quantum fluctuations. Including further exchange interactions increases the estimate to J = 141 meV. The 40 meV dispersion between the magnetic Brillouin zone boundary points (1/2, 0) and (1/4, 1/4) indicates that next-nearest neighbor interactions in this compound are intermediate between the values found in La2CuO4 and Sr2CuO2Cl2. Here by owing to the low-Z elements composing Ca2CuOCl2, the present results may enable a reliable comparison with the predictions of quantum many-body calculations, which would improve our understanding of the role of magnetic excitations and of electronic correlations in cuprates.},
doi = {10.1103/PhysRevB.95.155110},
journal = {Physical Review B},
number = 15,
volume = 95,
place = {United States},
year = {2017},
month = {4}
}

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