Spectroscopic distinction between the normal state pseudogap and the superconducting gap of cuprate high T {c} superconductors - Condensed Matter > SuperconductivityReportar como inadecuado




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Abstract: We report on broad-band infrared ellipsometry measurements of the c-axisconductivity of underdoped RBa {2}Cu {3}O {7-d} (R=Y, Nd, and La) singlecrystals. Our data provide a detailed account of the spectral weight (SW)redistributions due to the normal state pseudogap (PG) and the superconducting(SC) gap. They show that these phenomena involve different energy scales,exhibit distinct doping dependencies and thus are likely of different origin.In particular, the SW redistribution in the PG state closely resembles the oneof a conventional charge- or spin density wave (CDW or SDW) system.



Autor: Li Yu, D. Munzar, A.V. Boris, P. Yordanov, J. Chaloupka, Th. Wolf, C.T. Lin, B. Keimer, C. Bernhard

Fuente: https://arxiv.org/







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