Observation of pseudogap in Bi2Sr2CaCu2O8+δ single crystals with electron tunneling spectroscopy

H. J. Tao; Farun Lu; E. L. Wolf

doi:10.1016/S0921-4534(97)00862-9

Observation of pseudogap in Bi₂Sr₂CaCu₂O_8+δ single crystals with electron tunneling spectroscopy

H. J. Tao, Farun Lu, E. L. Wolf

Applied Physics

Research output: Contribution to journal › Article › peer-review

Abstract

We report electron tunneling evidence for a pseudogap in the normal state excitation spectrum of as-grown Bi₂Sr₂CaCu₂O_8+δ (Bi2212) single crystals. The normalized conductance curves show that the gap structure does not disappear at T_c but at much higher temperature T*; the lower bound of T* is within 110 K to 150 K for the investigated three junctions. The result gives a support for the existence of paired carriers in the normal state of cuprate superconductor Bi2212.

Original language	English (US)
Pages (from-to)	1507-1508
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	282-287
Issue number	PART 3
DOIs	https://doi.org/10.1016/S0921-4534(97)00862-9
State	Published - Aug 1997

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/S0921-4534(97)00862-9

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abstract = "We report electron tunneling evidence for a pseudogap in the normal state excitation spectrum of as-grown Bi2Sr2CaCu2O8+δ (Bi2212) single crystals. The normalized conductance curves show that the gap structure does not disappear at Tc but at much higher temperature T*; the lower bound of T* is within 110 K to 150 K for the investigated three junctions. The result gives a support for the existence of paired carriers in the normal state of cuprate superconductor Bi2212.",

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AU - Tao, H. J.

AU - Lu, Farun

AU - Wolf, E. L.

PY - 1997/8

Y1 - 1997/8

N2 - We report electron tunneling evidence for a pseudogap in the normal state excitation spectrum of as-grown Bi2Sr2CaCu2O8+δ (Bi2212) single crystals. The normalized conductance curves show that the gap structure does not disappear at Tc but at much higher temperature T*; the lower bound of T* is within 110 K to 150 K for the investigated three junctions. The result gives a support for the existence of paired carriers in the normal state of cuprate superconductor Bi2212.

AB - We report electron tunneling evidence for a pseudogap in the normal state excitation spectrum of as-grown Bi2Sr2CaCu2O8+δ (Bi2212) single crystals. The normalized conductance curves show that the gap structure does not disappear at Tc but at much higher temperature T*; the lower bound of T* is within 110 K to 150 K for the investigated three junctions. The result gives a support for the existence of paired carriers in the normal state of cuprate superconductor Bi2212.

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Observation of pseudogap in Bi₂Sr₂CaCu₂O_8+δ single crystals with electron tunneling spectroscopy

Abstract

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