by Guarise, M., Dalla Piazza, B., Moretti Sala, M., Ghiringhelli, G., Braicovich, L., Berger, H., Hancock, J. N., van der Marel, D., Schmitt, T., Strocov, V. N., Ament, L. J. P., van den Brink, J., Lin, P. -H., Xu, P., Ronnow, H. M. and Grioni, M.
Abstract:
We measured the momentum dependence of magnetic excitations in the model spin-1/2 2D antiferromagnetic insulator Sr2CuO2Cl2 (SCOC). We identify a single-spin-wave feature and a multimagnon continuum, with different polarization dependences. The spin waves display a large (70 meV) dispersion between the zone-boundary points (pi, 0) and (pi/2, pi/2). Employing an extended t-t’-t `’-U one-band Hubbard model, we find significant electronic hopping beyond nearest-neighbor Cu ions, indicative of extended magnetic interactions. The spectral line shape at (pi, 0) indicates sizable quantum effects in SCOC and probably more generally in the cuprates.
Reference:
Measurement of Magnetic Excitations in the Two-Dimensional Antiferromagnetic Sr2CuO2Cl2 Insulator Using Resonant X-Ray Scattering: Evidence for Extended Interactions (Guarise, M., Dalla Piazza, B., Moretti Sala, M., Ghiringhelli, G., Braicovich, L., Berger, H., Hancock, J. N., van der Marel, D., Schmitt, T., Strocov, V. N., Ament, L. J. P., van den Brink, J., Lin, P. -H., Xu, P., Ronnow, H. M. and Grioni, M.), In PHYSICAL REVIEW LETTERS, AMER PHYSICAL SOC, volume 105, 2010.
Bibtex Entry:
@article{ ISI:000282683500008,
Author = {Guarise, M. and Dalla Piazza, B. and Moretti Sala, M. and Ghiringhelli,
G. and Braicovich, L. and Berger, H. and Hancock, J. N. and van der
Marel, D. and Schmitt, T. and Strocov, V. N. and Ament, L. J. P. and van
den Brink, J. and Lin, P. -H. and Xu, P. and Ronnow, H. M. and Grioni,
M.},
Title = {{Measurement of Magnetic Excitations in the Two-Dimensional
Antiferromagnetic Sr2CuO2Cl2 Insulator Using Resonant X-Ray Scattering:
Evidence for Extended Interactions}},
Journal = {{PHYSICAL REVIEW LETTERS}},
Year = {{2010}},
Volume = {{105}},
Number = {{15}},
Month = {{OCT 8}},
Abstract = {{We measured the momentum dependence of magnetic excitations in the model
spin-1/2 2D antiferromagnetic insulator Sr2CuO2Cl2 (SCOC). We identify a
single-spin-wave feature and a multimagnon continuum, with different
polarization dependences. The spin waves display a large (70 meV)
dispersion between the zone-boundary points (pi, 0) and (pi/2, pi/2).
Employing an extended t-t'-t `'-U one-band Hubbard model, we find
significant electronic hopping beyond nearest-neighbor Cu ions,
indicative of extended magnetic interactions. The spectral line shape at
(pi, 0) indicates sizable quantum effects in SCOC and probably more
generally in the cuprates.}},
Publisher = {{AMER PHYSICAL SOC}},
Address = {{ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Guarise, M (Corresponding Author), Ecole Polytech Fed Lausanne, Inst Condensed Matter Phys, CH-1015 Lausanne, Switzerland.
Guarise, M.; Dalla Piazza, B.; Berger, H.; Lin, P. -H.; Xu, P.; Ronnow, H. M.; Grioni, M., Ecole Polytech Fed Lausanne, Inst Condensed Matter Phys, CH-1015 Lausanne, Switzerland.
Moretti Sala, M.; Ghiringhelli, G.; Braicovich, L., Politecn Milan, Dipartimento Fis, CNR, INFM, I-20133 Milan, Italy.
Hancock, J. N.; van der Marel, D., Univ Geneva, Inst Phys Mat Condensee, CH-1211 Geneva, Switzerland.
Schmitt, T.; Strocov, V. N., Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland.
Ament, L. J. P.; van den Brink, J., Leiden Univ, Inst Lorentz Theoret Phys, NL-2300 RA Leiden, Netherlands.}},
DOI = {{10.1103/PhysRevLett.105.157006}},
Article-Number = {{157006}},
ISSN = {{0031-9007}},
Keywords-Plus = {{LAMELLAR COPPER OXIDES; SQUARE-LATTICE; HEISENBERG-ANTIFERROMAGNET;
OPTICAL-PROPERTIES; RAMAN-SCATTERING; SPECTRA; LA2CUO4; STATE}},
Research-Areas = {{Physics}},
Web-of-Science-Categories = {{Physics, Multidisciplinary}},
ResearcherID-Numbers = {{Ghiringhelli, Giacomo/D-1159-2014
van den Brink, Jeroen/E-5670-2011
van den Brink, Jeroen/Y-3931-2019
Sala, Marco Moretti/H-1034-2014
Ronnow, Henrik M/A-4953-2009
Schmitt, Thorsten/A-7025-2010
Dalla Piazza, Bastien/M-6954-2014
van der Marel, Dirk/G-4618-2012
Moretti, Marco/AAF-9255-2019
}},
ORCID-Numbers = {{Ghiringhelli, Giacomo/0000-0003-0867-7748
van den Brink, Jeroen/0000-0001-6594-9610
Sala, Marco Moretti/0000-0002-9744-9976
Ronnow, Henrik M/0000-0002-8832-8865
Dalla Piazza, Bastien/0000-0003-4997-7165
van der Marel, Dirk/0000-0001-5266-9847
Moretti, Marco/0000-0002-9744-9976
Braicovich, Lucio/0000-0001-6548-9140}},
Funding-Acknowledgement = {{Swiss NSFSwiss National Science Foundation (SNSF); MaNEP NCCRSwiss
National Science Foundation (SNSF)}},
Funding-Text = {{The SAXES instrument at the ADRESS beam line of the Swiss Light Source
was jointly built by Paul Scherrer Institut and Politecnico di Milano.
We gratefully acknowledge discussions with M. Mourigal, M. Gingras,
J.-Y. Delannoy, F. Vernay, and B. Normand, and support from the Swiss
NSF and the MaNEP NCCR.}},
Number-of-Cited-References = {{38}},
Times-Cited = {{94}},
Usage-Count-Last-180-days = {{3}},
Usage-Count-Since-2013 = {{41}},
Journal-ISO = {{Phys. Rev. Lett.}},
Doc-Delivery-Number = {{660YB}},
Unique-ID = {{ISI:000282683500008}},
OA = {{Green Accepted}},
DA = {{2020-12-22}},
}
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