Hidden order and pseudogap of Pb-substituted Bi2201 studied by scanning tunneling microscopy and out-of-plane resistivity in magnetic fields

被引：1

作者：

Kudo, Kazutaka ^{[1
]}

Nishizaki, Terukazu ^{[1
]}

Okumura, Naoyuki ^{[1
]}

Sasaki, Takahiko ^{[1
]}

Kobayashi, Norio ^{[1
]}

Ohmichi, Eiji ^{[2
]}

Osada, Toshihito ^{[2
]}

机构：

[1] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[2] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2007年 / 21卷 / 18-19期

关键词：

pseudogap; hidden order; out-of-plane resistivity; STM; Pb-substituted Bi2201;

D O I：

10.1142/S0217979207044202

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have performed measurements of the out-of-plane resistivity p. in magnetic fields up to 40 T and the scanning tunneling microscopy (STM) in the Pb-substituted Bi2201. Two kinds of pseudogaps PG1 and PG2 are found at T-1* and T-2* below which the nonmetallic rho(c) starts to develop and to be suppressed in magnetic fields with decreasing temperature, respectively. The obtained phase diagram indicates that the pseudogap related to the superconductivity is not PG1 but PG2. STM images of the Bi(Pb)-O plane in the optimally doped sample show bright atom-strings at V <= 10 mV. The observed structure may indicate the one-dimensional correlation which is different from the 4a x 4a structure reported in other systems.

引用

页码：3208 / 3210

页数：3

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