Magnetic excitation in the spin-gap compoundCu2Sc2Ge4O13: Comparison toCu2Fe2Ge4O13

2006/07/03 by Takatsugu Masuda, T. Masuda, G. J. Redhammer +1
Chemistry · Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Band gap #Chemistry #Condensed matter physics #Crystallography #Dimer #Excitation #Inelastic neutron scattering #Magnetic and transport properties of perovskites and related materials #Magnetic susceptibility #Materials science #Neutron #Neutron scattering #Nuclear magnetic resonance #Nuclear physics #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Spin (aerodynamics) #Thermodynamics #cond-mat.str-el

paper · pdf · doi:10.1103/physrevb.74.054418

5 pages

arxiv created 2006/07/03 · openalex publication_date 2006/08/16 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

The compound Cu₂Sc₂Ge₄O₁₃ is presented as a member of the family of weakly coupled spin chain and dimer compounds Cu₂M₂Ge₄O₁₃. Magnetic susceptibility, heat capacity, and neutron inelastic-scattering measurements reveal that the compound has the same spin dimer component as Cu₂Fe₂Ge₄O₁₃. The observed narrow-band excitation in bulk measurements is consistent with spin-gap behavior. The energy scale of the weakly coupled dimers in the Sc compound is perfectly coincident with that in the Fe compound.

Citations

• Possible highT c superconductivity in the Ba?La?Cu?O system
• Cooperative Ordering of Gapped and Gapless Spin Networks inCu2Fe2Ge4O13
• Magnetic excitations in the weakly coupled spin dimers and chains materialCu2Fe2Ge4O13
• Magnetically Driven Ferroelectric Order inNi3V2O8
• Coexistence of a nearly spin-singlet state and antiferromagnetic long-range order in quantum spin systemCu2CdB2O6