Interlayer tunneling spectroscopy and evidence for the evolution of a pseudogap in Bi2Sr2CaCu2O8

被引：31

作者：

Suzuki, M ^{[1
]}

Karimoto, S ^{[1
]}

Namekawa, K ^{[1
]}

机构：

[1] NTT Corp, NTT Basic Res Labs, Tokai, Ibaraki 3191193, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1998年 / 67卷 / 03期

关键词：

Bi2Sr2CaCu2O8; interlayer tunneling; intrinsic Josephson junction; tunneling spectroscopy; pseudogap;

D O I：

10.1143/JPSJ.67.732

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on interlayer tunneling spectroscopy using very thin stacks of intrinsic Josephson junctions fabricated on the surface of a Bi2Sr2CaCu2O8 Single crystal. It is found that a pseudogap evolves below 180 K and continues to exist below T-c. It is also found that the superconducting gap evolves below T-c within the pseudogap. As a consequence of this finding, it is shown that the semiconductive c-axis resistivity can be interpreted in a straightforward manner in terms of the pseudogap and that the tunneling resistance is temperature independent.

引用

页码：732 / 735

页数：4

共 18 条

[1] THE THEORY OF SUPERCONDUCTIVITY [J].

ANDERSON, PW .

PHYSICA C, 1991, 185 :11-16

[2]

BALESTRINO G, 1993, PHYS REV B, V44, P6037

[3] Role of superconducting fluctuations in c-axis transport of Bi-2:2:1:2 superconductor in high magnetic fields [J].

Cho, JH ;

Maley, MP ;

Safar, H ;

Coulter, JY ;

Bulaevskii, LN .

PHYSICA C, 1996, 265 (3-4) :277-282

[4]

Cooper S. L., 1994, PHYS PROPERTIES HIGH, P61

[5] Evolution of the Fermi surface with carrier concentration in Bi2Sr2CaCu2O8+delta [J].

Ding, H ;

Norman, MR ;

Yokoya, T ;

Takeuchi, T ;

Randeria, M ;

Campuzano, JC ;

Takahashi, T ;

Mochiku, T ;

Kadowaki, K .

PHYSICAL REVIEW LETTERS, 1997, 78 (13) :2628-2631

[6] INTERLAYER TUNNELING MODEL FOR THE C-AXIS RESISTIVITY IN HIGH-TEMPERATURE SUPERCONDUCTORS [J].

GRAY, KE ;

KIM, DH .

PHYSICAL REVIEW LETTERS, 1993, 70 (11) :1693-1696

[7]

IOFFE LB, 1993, PHYS REV B, V47, P6037

[8]

ITOH M, 1997, PHYS REV B, V55, pR1200

[9] OBSERVATION OF A-B PLANE GAP ANISOTROPY IN BI2SR2CACU2O8 WITH A LOW-TEMPERATURE SCANNING TUNNELING MICROSCOPE [J].

KANE, J ;

CHEN, Q ;

NG, KW ;

TAO, HJ .

PHYSICAL REVIEW LETTERS, 1994, 72 (01) :128-131

[10] INTRINSIC JOSEPHSON EFFECTS IN HIGH-T-C SUPERCONDUCTORS [J].

KLEINER, R ;

MULLER, P .

PHYSICAL REVIEW B, 1994, 49 (02) :1327-1341

← 1 2 →