Phys. Rev. Lett. 82, 5337–5340 (1999)Linear Dependence of Peak Width in χ(q,ω) vs Tc for YBa2Cu3O6+x SuperconductorsReceived 26 January 1999; published in the issue dated 28 June 1999 It is shown that the momentum space width of the peak in the spin susceptibility, Imχ(q,ω), is linearly proportional to the superconducting Tc: Tc = ħv*Δq with ħv*≃35meVÅ. This relation is similar to the linear relation between incommensurate peak splitting and Tc in LaSrCuO superconductors, as first proposed by Yamada et al. [Phys. Rev. B 57, 6165 (1998)]. The velocity ħv* is smaller than Fermi velocity or the spin-wave velocity of the parent compound and remains the same for a wide doping range. This result points towards strong similarities in magnetic state of YBa2Cu3O6+x and LaSrCuO. © 1999 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.82.5337
DOI:
10.1103/PhysRevLett.82.5337
PACS:
74.20.-z, 61.12.-q, 78.70.Nx
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.