Correlated decrease between the superconducting volume fraction and Tc and possible phase separation in the overdoped regime of La2-xSrxCuO4

被引：0

作者：

Tanabe, Y. ^{[1
]}

Adachi, T. ^{[1
]}

Noji, T. ^{[1
]}

Sato, H. ^{[1
]}

Koike, Y. ^{[1
]}

机构：

[1] Tohoku Univ, Grad Sch Engn, Dept Appl Phys, Aoba Ku, 6-6-05 Aoba, Sendai, Miyagi 9808579, Japan

来源：

LOW TEMPERATURE PHYSICS, PTS A AND B | 2006年 / 850卷

关键词：

magnetic susceptibility; phase separation; La2-xSrxCuO4; overdoped regime;

D O I：

暂无

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In order to prove the possible phase separation in the overdoped high-T-c superconductors, suggested from the muon-spin-relaxation measurements, the superconducting (SC) volume fraction has been investigated in detail in the overdoped regime of La2-xSrCuO4. From measurements of the magnetic susceptibility, chi, using a single crystal in which the Sr concentration, x, continuously changes in the overdoped regime, both the absolute value of chi at 2 K, vertical bar chi(2K)vertical bar, on field cooling reflecting the SC volume fraction and T-c have been found to decrease with increasing x. Moreover, it appears that vertical bar chi(2K)vertical bar has a roughly linear relation to T-c. It has been concluded that phase separation into SC and normal-state regions takes place in the overdoped regime of La2-xSrxCuO4.

引用

页码：419 / +

页数：2

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