2024-03-29T02:35:48Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/147232022-11-17T02:08:08Zhdl_2115_20039hdl_2115_116Scanning tunneling microscopy and spectroscopy study of 4ax4a electronic charge order and the inhomogeneous pairing gap in superconducting Bi2Sr2CaCu2O8+δHashimoto, A.Momono, N.Oda, M.Ido, M.428.4We performed scanning tunneling microscopy and scanning tunneling spectroscopy (STS) measurements on underdoped Bi2212 crystals with doping levels p~0.11, ~0.13, and ~0.14 to examine the nature of the nondispersive 4a×4a charge order in the superconducting state at T≪Tc. The charge order appears conspicuously within the pairing gap, and low doping tends to favor the charge order. We point out the possibility that the 4a×4a charge order will be dynamical in itself, and pinned down over regions with effective pinning centers. The pinned 4a×4a charge order is closely related to the spatially inhomogeneous pairing gap structure, which has often been reported in STS measurements on high-Tc cuprates.American Physical SocietyJournal Articleapplication/pdfhttp://hdl.handle.net/2115/14723https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/14723/1/PRB2006-74.pdf0163-18291095-3795Physical Review B740645082006-05enginfo:doi/10.1103/PhysRevB.74.064508Copyright © 2006 American Physical Societypublisher