Bose-Einstein to BCS Crossover Picture for High-T_c Cuprates

Дата и время публикации : 1997-06-14T21:57:58Z

Авторы публикации и институты :
Y. J. Uemura

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 4 pages, 4 figures included inline (postscript), invited paper presented at M^2S-HTSC-V, Beijing, 1997. to be published, Physica C. email: tomo@kirby.phys.columbia.edu
Первичная категория: cond-mat.supr-con

Все категории : cond-mat.supr-con, cond-mat.str-el

Краткий обзор статьи: Combining (1) the universal correlations between $T_{c}$ and $n_{s}/m^{*}$ (superconducting carrier density / effective mass) and (2) the pseudo-gap behavior in the underdoped region, we obtain a picture to describe superconductivity in cuprate systems in evolution from Bose-Einstein to BCS condensation. Overdoped and Zn-substituted cuprate systems show signatures of reduced superfluid density in a microscopic phase separation. Scaling of $T_{c}$ to the superfluid volume density $n_{s}$ in all these cases indicate importance of Bose condensation.

Category: Physics