Macroscopic quantum tunneling in a d-wave high-TC Bi2Sr2CaCu2O8+δ superconductor

K. Inomata, S. Sato, Koji Nakajima, A. Tanaka, Y. Takano, H. B. Wang, M. Nagao, H. Hatano, S. Kawabata

研究成果: Article査読

175 被引用数 (Scopus)

抄録

While Josephson-junction-like structures intrinsic to the layered cuprate high temperature superconductors offer an attractive stage for exploiting possible applications to new quantum technologies, the low energy quasiparticle excitations characteristically present in these d-wave superconductors may easily destroy the coherence required. Here we demonstrate for the first time the feasibility of macroscopic quantum tunneling in the intrinsic Josephson junctions of a high temperature superconductor Bi2Sr2CaCu2O8+δ, and find it to be characterized by a high classic-to-quantum crossover temperature and a relatively weak quasiparticle dissipation.

本文言語English
論文番号107005
ジャーナルPhysical review letters
95
10
DOI
出版ステータスPublished - 2005 9 2

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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