Freezing of spin dynamics and omega/T scaling in underdoped cuprates

Abstract

The memory function approach to spin dynamics in doped antiferromagnetic insulator combined with the assumption of temperature independent static spin correlations and constant collective mode damping leads to omega/T scaling in a broad range. The theory involving a non universal scaling parameter is used to analyze recent inelastic neutron scattering results for underdoped cuprates. Adopting modified damping function also the emerging central peak in low-doped cuprates at low temperatures can be explained within the same framework.

4 pages, 5 figures; to appear in Journal of Physics: Conference Series (ICM2009 Conference, Karlsruhe, Germany)

References in corpus (6)

• Electronic liquid crystal state in the high-temperature superconductor YBCO(6.45)
• Central mode and spin confinement near the boundary of the superconducting phase in YBa2Cu3O6.353 (Tc=18 K)
• High Energy Spin Excitations in Electron-Doped Superconducting Pr${}_{0.88}$LaCe${}_{0.12}$CuO${}_{4-\delta }$ with $T_c=21$ K
• Spin dynamics near the critical doping in weakly-superconducting underdoped YBa2Cu3O6.35 (Tc=18K)
• Novel dynamic scaling regime in hole-doped La2CuO4
• Freezing of spin dynamics in underdoped cuprates