LPCBC: Abstract <b style="color:black;background-color:#66ffff">2</b>

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Äàòà èçìåíåíèÿ: Fri Dec 24 09:29:06 1999
Äàòà èíäåêñèðîâàíèÿ: Tue Oct 2 02:13:54 2012
Êîäèðîâêà:
Ïîèñêîâûå ñëîâà: m 2

LPCBC: Abstract <b style="color:black;background-color:#66ffff">2</b>_26 A.V.Puckov, P. Fournier, D.N. Basov, T. Timusk, A. Kapitulnik, N.N.Kolesnikov.
Evolution of the pseudogap state of high-T_c superconductors with doping.

Abstract:

We report on a study of the infrared properties of Bi₂Sr₂CaCu₂O_8+d, Bi_1.66Pb_0.34Sr₂CaCu₂O_8+d, and Tl₂Ba₂CuO_6+dcrystals at doping levels from underdoped to strongly overdoped. We calculate the frequency-depended scattering rate 1/t(w,T) and study its doping dependence. While we observe a normal-state gaplike depression in 1/t(w,T) in the underdoped regime, it is not observed in the overdoped regime. While the high-frequency 1/t(w,T) is temperature independent in the underdoped regime, it scales with temperature in the overdoped regime.