Evidence for coexistence of the superconducting gap and the pseudogap in Bi-2212 from intrinsic tunneling spectroscopy

被引：300

作者：

Krasnov, VM ^{[1
]}

Yurgens, A

Winkler, D

Delsing, P

Claeson, T

机构：

[1] Chalmers, Dept Microelect & Nanosci, S-41296 Gothenburg, Sweden

[2] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Russia

[3] PL Kapitza Phys Problems Inst, Moscow 117334, Russia

[4] IMEGO Inst, S-41133 Gothenburg, Sweden

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.84.5860

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

present intrinsic tunneling spectroscopy measurements on small Bi2Sr2CaCu2O8+x,, mesas. The tunnel conductance curves show both sharp peaks at the superconducting gap voltage and broad humps representing the c-axis pseudogap, The superconducting gap vanishes at T-c, while the pseudogap exists both above and below T-c. Our observation implies that the superconducting and pseudogaps represent different coexisting phenomena.

引用

页码：5860 / 5863

页数：4

共 28 条

[1] Universal linear density of states for tunneling into the two-dimensional electron gas in a magnetic field
Chan, HB
Glicofridis, PI
Ashoori, RC
Melloch, MR
[J]. PHYSICAL REVIEW LETTERS, 1997, 79 (15) : 2867 - 2870
[2] SCANNING-PROBE-MICROSCOPY STUDIES OF SUPERLATTICE STRUCTURES AND DENSITY-WAVE STRUCTURES IN 2H-NBSE2, 2H-TASE2, AND 2H-TAS2 INDUCED BY FE DOPING
DAI, Z
XUE, Q
GONG, Y
SLOUGH, CG
COLEMAN, RV
[J]. PHYSICAL REVIEW B, 1993, 48 (19): : 14543 - 14555
[3] Magnetic field independence of the spin gap in YBa2Cu3O7-δ
Gorny, K
Vyaselev, OM
Martindale, JA
Nandor, VA
Pennington, CH
Hammel, PC
Hults, WL
Smith, JL
Kuhns, PL
Reyes, AP
Moulton, WG
[J]. PHYSICAL REVIEW LETTERS, 1999, 82 (01) : 177 - 180
[4] Gruner G, 1994, DENSITY WAVES SOLIDS
[5] Fermi surfaces and single-particle spectral functions of low-dimensional inorganic non-cuprate compounds: The molybdenum bronzes
Gweon, GH
Allen, JW
Claessen, R
Clack, JA
Poirier, DM
Benning, PJ
Olson, CG
Ellis, WP
Zhang, YX
Schneemeyer, LF
Marcus, J
Schlenker, C
[J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 1996, 8 (48) : 9923 - 9938
[6] Pseudo gap, resonant tunneling and charge dynamics in cuprate superconductors
Halbritter, J
[J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1998, 302 (2-3): : 221 - 228
[7] VORTEX-CORE STRUCTURE OBSERVED WITH A SCANNING TUNNELING MICROSCOPE
HESS, HF
ROBINSON, RB
WASZCZAK, JV
[J]. PHYSICAL REVIEW LETTERS, 1990, 64 (22) : 2711 - 2714
[8] Suppressed superconductivity of the surface conduction layer in Bi2Sr2CaCu2Os8+x single crystals probed by c-axis tunneling measurements
Kim, N
Doh, YJ
Chang, HS
Lee, HJ
[J]. PHYSICAL REVIEW B, 1999, 59 (22) : 14639 - 14643
[9] KRASNOV VM, CONDMAT002094
[10] a-b plane microwave surface impedance of a high-quality Bi2Sr2CaCu2O8 single crystal
Lee, SF
Morgan, DC
Ormeno, RJ
Broun, DM
Doyle, RA
Waldram, JR
Kadowaki, K
[J]. PHYSICAL REVIEW LETTERS, 1996, 77 (04) : 735 - 738

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