Absence of density of states transfer observed by interlayer tunneling spectroscopy in magnetic fields for Bi2Sr2CaCu2O8+δ -: art. no. 214513

被引：9

作者：

Anagawa, K ^{[1
]}

Yamada, Y ^{[1
]}

Watanabe, T ^{[1
]}

Suzuki, M ^{[1
]}

机构：

[1] NTT Corp, NTT Photon Labs, Kanagawa 2430198, Japan

来源：

PHYSICAL REVIEW B | 2003年 / 67卷 / 21期

关键词：

D O I：

10.1103/PhysRevB.67.214513

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using short-pulse interlayer tunneling spectroscopy, the superconducting gap and the pseudogap structure are measured both in the absence and presence of magnetic fields for slightly overdoped Bi2Sr2CaCu2O8+delta. It is found, together with characteristic field-dependent behavior of the superconducting conductance peak, that the tunneling conductance within the superconducting gap remains almost unchanged under magnetic fields up to 9 T. This implies that the transfer of the quasiparticle density of states associated with the superconducting transition is absent in this system, suggesting unconventional pairing interaction or a field-induced ordered state that competes with superconductivity.

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页数：5

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