Abstract
The wave-vector integrated dynamical spin susceptibility χ 2D(ω) of YBa 2 Cu 3 O 6+y cuprates is considered. χ 2D is calculated in the superconducting state from a renormalized mean-field theory of the t−t′−J-model, based on the slave-boson formulation. Besides the well-known “41 meV resonance” a second, much broader peak ('hump') appears in Im χ 2D. It is caused by particle-hole excitations across the maximum gap Δ 0. In contrast to the resonance, which moves to lower energies when the hole filling is reduced from optimal doping, the position of this 'hump' at ≈2 Δ 0 stays almost unchanged. The results are in reasonable agreement with inelastic neutronscattering experiments.
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REFERENCES
J. Rossat-Mignod et al., Physica B 169, 58 (1991).
H. A. Mook et al., Phys. Rev. Lett. 70, 3490 (1993).
H. F. Fong et al., Phys. Rev. Lett. 75, 316 (1995).
P. Bourges, L. P. Regnault, L. Sidis, and C. Vettier, Phys. Rev. B 53, 876 (1996).
H. He et al., Phys. Rev. Lett. 86, 1610 (2001).
J. Mesot et al., (2001), preprint cond-mat/0102339.
P. Dai et al., Phys. Rev. Lett. 77, 5425 (1996).
H. F. Fong, B. Keimer, D. L. Milius, and I. A. Aksay, Phys. Rev. Lett. 78, 713 (1997).
H. F. Fong et al., Phys. Rev. B 61, 14773 (2000).
P. Dai, H. A. Mook, R. D. Hunt, and F. Doğan, Phys. Rev. B 63, 054525 (2001).
P. Dai et al., Science 284, 1344 (1999).
J. Brinckmann and P. A. Lee, (2001), preprint cond-mat/0107138.
J. Brinckmann and P. A. Lee, J. Phys. Chem. Solids 59, 1811 (1998).
S. Chakravarty, A. Sudbø, P. W. Anderson, and S. Strong, Science 261, 337 (1993).
O. K. Andersen, O. Jepsen, A. I. Lichtenstein, and I. I. Mazin, Phys. Rev. B 49, 4145 (1994).
T. K. Lee and S.-P. Feng, Phys. Rev. B 38, 11809 (1988).
J. Igarashi and P. Fulde, Phys. Rev. B 45, 12357 (1992).
G. Khaliullin and P. Horsch, Phys. Rev. B 47, 463 (1993).
D. H. Kim and P. A. Lee, Ann. Phys. (N.Y.) 272, 130 (1999).
M. Inaba, H. Matsukawa, M. Saitoh, and H. Fukuyama, Physica C 257, 299 (1996).
J. Brinckmann and P. A. Lee, Phys. Rev. Lett. 82, 2915 (1999).
T. R. Thurston et al., Phys. Rev. B 40, 4585 (1989).
R. R. P. Singh and R. L. Glenister, Phys. Rev. B 46, 11871 (1992).
S. M. Hayden et al., Physica B 241–243, 765 (1998).
P. Bourges et al., Phys. Rev. B 56, R11439 (1997).
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Brinckmann, J., Lee, P.A. Energy Scales in the Local Magnetic Excitation Spectrum of YBa2Cu3O6+y . Journal of Low Temperature Physics 126, 923–931 (2002). https://doi.org/10.1023/A:1013894608566
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DOI: https://doi.org/10.1023/A:1013894608566