Spin Susceptibility in Underdoped $\mathbf{YB}{\mathbf{a}}_2\mathbf{C}{\mathbf{u}}_3{\mathbf{O}}_{6+\mathbf{x}}$

Abstract

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: \YBCO{6.5} (Tc = 52 K), \YBCO{6.7} (Tc = 67 K), and \YBCO{6.85} (T_c = 87 K). Theoretical implications of these data are discussed, and a critique of recent attempts to relate the spin excitations to the thermodynamics of high temperature superconductors is given.

minor revisions, to appear in PRB

References in corpus (3)

• The Magnetic Excitation Spectrum and Thermodynamics of High-$T_c$ Superconductors
• A relation between the resonance neutron peak and ARPES data in cuprates
• Spin gap and magnetic coherence in a clean high-T_c superconductor

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