Výsledky vyhledávání - "Milius, D. L."

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Spin Susceptibility in Underdoped $\bf YBa_2Cu_3O_{6+x}$

Autor: Fong, H. F., Bourges, P., Sidis, Y., Regnault, L. P., Bossy, J., Ivanov, A., Milius, D. L., Aksay, I. A., Keimer, B.

Publikováno v: Phys. Rev. B 61, 14773 (2000)

We report a comprehensive polarized and unpolarized neutron scattering study of the evolution of the dynamical spin susceptibility with temperature and doping in three underdoped single crystals of the \YBCO{6+x} high temperature superconductor: \YBC

Externí odkaz: http://arxiv.org/abs/cond-mat/9910041

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Spin dynamics in high-$T_C$ superconductors

Autor: Bourges, Ph., Sidis, Y., Fong, H. F., Keimer, B., Regnault, L. P., Bossy, J., Ivanov, A. S., Milius, D. L., Aksay, I. A.

Publikováno v: High Temperature Superconductivity Edited by S.E. Barnes {\it et al} 207-212 (CP483 American Institute of Physics, Amsterdam, 1999) .

Key features of antiferromagnetic dynamical correlations in high-$T_C$ superconductors cuprates are discussed. In underdoped regime, the sharp resonance peak, occuring exclusively in the SC state, is accompanied by a broader contribution located arou

Externí odkaz: http://arxiv.org/abs/cond-mat/9902067

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Effect of Nonmagnetic Impurities on the Magnetic Resonance Peak in YBa2Cu3O7

Autor: Fong, H. F., Bourges, P., Sidis, Y., Regnault, L. P., Bossy, J., Ivanov, A., Milius, D. L., Aksay, I. A., Keimer, B.

Publikováno v: Phys. Rev. Lett. 82, 1939 (1999)

The magnetic excitation spectrum of a YBa_2 Cu_3 O_7 crystal containing 0.5% of nonmagnetic (Zn) impurities has been determined by inelastic neutron scattering. Whereas in the pure system a sharp resonance peak at E ~ 40 meV is observed exclusively b

Externí odkaz: http://arxiv.org/abs/cond-mat/9812047

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Doping Dependence of the Magnetic Resonance Peak in YBa_2 Cu_3 O_{6+x}

Autor: Keimer, B., Fong, H. F., Lee, S. H., Milius, D. L., Aksay, I. A.

We report inelastic neutron scattering experiments on the doping dependence of the energy and spectral weight of the sharp magnetic resonance peak in YBa_2 Cu_3 O_{6+x}. These measurements also shed light on the relationship between the magnetic exci

Externí odkaz: http://arxiv.org/abs/cond-mat/9705103

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High energy spin excitations in YBa_2 Cu_3 O_{6.5}

Autor: Bourges, Ph., Fong, H. F., Regnault, L. P., Bossy, J., Vettier, C., Milius, D. L., Aksay, I. A., Keimer, B.

Publikováno v: Phys. Rev. B, 56, R11439 (1997)

Inelastic neutron scattering has been used to obtain a comprehensive description of the absolute dynamical spin susceptibility $\chi'' (q,\omega)$ of the underdoped superconducting cuprate YBa_2 Cu_3 O_{6.5} ($T_c = 52 K$) over a wide range of energi

Externí odkaz: http://arxiv.org/abs/cond-mat/9704073

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Superconductivity-Induced Anomalies in the Spin Excitation Spectra of Underdoped YBa_2 Cu_3 O_{6+x}

Autor: Fong, H. F., Keimer, B., Milius, D. L., Aksay, I. A.

Polarized and unpolarized neutron scattering has been used to determine the effect of superconductivity on the magnetic excitation spectra of YBa_2 Cu_3 O_{6.5} (T_c = 52K) and YBa_2 Cu_3 O_{6.7} (T_c = 67K). Pronounced enhancements of the spectral w

Externí odkaz: http://arxiv.org/abs/cond-mat/9612110

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