Spin-roton excitations in the cuprate superconductors

Abstract

We identify a new kind of elementary excitations, spin-rotons, in the doped Mott insulator. They play a central role in deciding the superconducting transition temperature Tc, resulting in a simple Tc formula,Tc=Eg/6, with Eg as the characteristic energy scale of the spin rotons. We show that the degenerate S=1 and S=0 rotons can be probed by neutron scattering and Raman scattering measurements, respectively, in good agreement with the magnetic resonancelike mode and the Raman A1g mode observed in the high-Tc cuprates.

10 pages, 9 figures

References in corpus (13)

• Inelastic Light Scattering From Correlated Electrons
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• Upper Pseudogap Phase: Magnetic Characterizations
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Cited by in corpus (13)

• Superconducting ground state of a doped Mott insulator
• Confinement-deconfinement interplay in quantum phases of doped Mott insulators
• Low-Temperature Pseudogap Phenomenon: Precursor of High-$T_c$ Superconductivity
• Mott physics, sign structure, ground state wavefunction, and high-Tc superconductivity
• Superconductivity in Mutual Chern-Simons Gauge Theory
• Phenomenological Single-Particle Green's Function for the Pseudogap and Superconducting Phases of High-T${}_c$ Cuprates
• Crossover from Fermi Arc to Full Fermi Surface
• Thermal Hall Effect and Neutral Spinons in a Doped Mott Insulator
• Mottness, Phase String, and High-$T_c$ Superconductivity
• Electric transport in doped Mott insulators dictated by a non-Ioffe-Larkin composition rule and spinons
• Intrinsic phase fluctuation and superfluid density in doped Mott insulators
• An Emergent World of Gauge Force and Partons
• Terahertz nonlinear response in cuprate superconductors and the Higgs field in doped Mott insulators