Scaling behavior of the normal-state properties of the underdoped high-Tc cuprates

Victor V. Moshchalkov; Lieven Trappeniers; Johan Vanacken; Yvon Bruynseraede

doi:10.1117/12.335893

22 December 1998 Scaling behavior of the normal-state properties of the underdoped high-T_c cuprates

Victor V. Moshchalkov, Lieven Trappeniers, Johan Vanacken, Yvon Bruynseraede

Proceedings Volume 3481, Superconducting and Related Oxides: Physics and Nanoengineering III; (1998) https://doi.org/10.1117/12.335893
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

The scaling behavior of the normal state transport and magnetic properties of the underdoped cuprates as a function of T/T₀ is now interpreted as an evidence for the opening of a pseudogap at T* approximately T₀. To investigate the origin of the pseudogap, we have analyzed first the temperature dependence of the resistivity (rho) (T) of the novel Sr_2.5Ca_11.5Cu₂₄O₄₁ spin-ladder compound under hydrostatic pressure of up to 8 GPa. This (rho) (T) dependence has been successfully explained by assuming that the relevant length scale for electrical transport -- the inelastic length -- is given by the magnetic correlation length related to the opening of a spin-gap in a one- dimensional (1D) even-chain spin-ladder (1D-SL). As a next step, we compared the (rho) (T) curves of the SL compounds and underdoped cuprates. We have found that the (rho) (T) dependences of YBa₂Cu₄O₈ and underdoped YBa₂Cu₃O_x demonstrate a remarkable scaling with the (rho) (T) of the 1D-SL compound Sr_2.5Ca_11.5Cu₂₄O₄₁. This scaling implies that the pseudo-gap below T* in underdoped YBa₂Cu₄O₈ and YBa₂Cu₃O_x is the spin-gap in the even-chain 1D-SL formed at T less than T* in these materials. Therefore, at temperatures T_c(x) less than T less than T*(x), underdoped cuprates are effectively in a 1D ('stripe') regime. A Josephson-like coupling of these stripes leads to a recovery of a 2D regime at low temperatures T approximately T_c(x).

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Victor V. Moshchalkov, Lieven Trappeniers, Johan Vanacken, and Yvon Bruynseraede "Scaling behavior of the normal-state properties of the underdoped high-T_c cuprates", Proc. SPIE 3481, Superconducting and Related Oxides: Physics and Nanoengineering III, (22 December 1998); https://doi.org/10.1117/12.335893

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KEYWORDS

Stereolithography

Magnetism

Crystals

Copper

Data modeling

Doping

Scattering

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