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Hokkaido University Collection of Scholarly and Academic Papers >
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Large pseudogap and nodal superconducting gap in Bi2Sr_[2-x]LaxCuO_[6+δ] and Bi2Sr2CaCu2O_[8+δ] : Scanning tunneling microscopy and spectroscopy
| Title: | Large pseudogap and nodal superconducting gap in Bi2Sr_[2-x]LaxCuO_[6+δ] and Bi2Sr2CaCu2O_[8+δ] : Scanning tunneling microscopy and spectroscopy |
| Authors: | Kurosawa, T. Browse this author | | Yoneyama, T. Browse this author | | Takano, Y. Browse this author | | Hagiwara, M. Browse this author | | Inoue, R. Browse this author | | Hagiwara, N. Browse this author | | Kurusu, K. Browse this author | | Takeyama, K. Browse this author | | Momono, N. Browse this author | | Oda, M. Browse this author | | Ido, M. Browse this author |
| Issue Date: | 1-Mar-2010 |
| Publisher: | American Physical Society |
| Journal Title: | Physical Review B |
| Volume: | 81 |
| Issue: | 9 |
| Start Page: | 094519 |
| Publisher DOI: | 10.1103/PhysRevB.81.094519 |
| Abstract: | In the present work, scanning tunneling microscopy/spectroscopy (STM/STS) measurements were carried out on underdoped Bi2Sr_[2-x]LaxCuO_[6+δ] and Bi2Sr2CaCu2O_[8+δ] to clarify the origin of the pseudogap, in particular, the inhomogeneous large pseudogap. The nodal part of a d-wave pairing gap, which is under no influence of the inhomogeneous large pseudogap, was also examined by relating the homogeneous bottom part of the STS gap to a nodal d-wave gap in momentum space. We report that the inhomogeneous large pseudogap in the antinodal region links to a two-dimensional electronic charge order, and that the gap size of the nodal d-wave part Δsc scales with the superconducting critical temperature Tc in the pseudogap regime. |
| Rights: | ©2010 The American Physical Society |
| Type: | article |
| URI: | http://hdl.handle.net/2115/42972 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 伊土 政幸
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