Direct Observation of Pseudogap in High-Tc Superconductor

Azusa Matsuda, Satoshi Sugita, Takao Watanabe

研究成果: Article

抄録

We found evidence of a pseudogap opening in the electron density of states (DOS) of a Bi-based high-Tc cuprate. We probed the DOS using a newly developed scanning tunneling microscope that can operate in the temperature range 10-300 K. Using a precision annealing technique for carrier density control, we obtained temperature and doping dependences of DOS and determined the pseudogap phase boundary. Using a theoretical fitting, we evaluated the temperature and doping dependences of the superconducting gap and pseudogap. The two gaps behaved differently upon doping, suggesting that the pseudogap and superconducting gap belong to different calsses of physical quantity.

元の言語English
ページ(範囲)983-988
ページ数6
ジャーナルNTT R and D
47
発行部数9
出版物ステータスPublished - 1998
外部発表Yes

Fingerprint

Superconducting materials
Doping (additives)
Electronic density of states
Phase boundaries
Temperature
Carrier concentration
Microscopes
Annealing
Scanning

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

これを引用

Matsuda, A., Sugita, S., & Watanabe, T. (1998). Direct Observation of Pseudogap in High-Tc Superconductor. NTT R and D, 47(9), 983-988.

Direct Observation of Pseudogap in High-Tc Superconductor. / Matsuda, Azusa; Sugita, Satoshi; Watanabe, Takao.

:: NTT R and D, 巻 47, 番号 9, 1998, p. 983-988.

研究成果: Article

Matsuda, A, Sugita, S & Watanabe, T 1998, 'Direct Observation of Pseudogap in High-Tc Superconductor', NTT R and D, 巻. 47, 番号 9, pp. 983-988.
Matsuda, Azusa ; Sugita, Satoshi ; Watanabe, Takao. / Direct Observation of Pseudogap in High-Tc Superconductor. :: NTT R and D. 1998 ; 巻 47, 番号 9. pp. 983-988.
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