ARPES studies of the superconducting gap in high-temperature superconductors
Ημερομηνία
1996Συγγραφέας
Ding, H.Norman, M. R.
Giapintzakis, John
Campuzano, Juan C.
Claus, H.
Wuehl, H.
Randeria, M.
Bellman, A.
Yokoya, T.
Takahashi, T.
Mochiku, T.
Kadowaki, Kazuo
Ginsberg, Don M.
Εκδότης
Affiliation: Argonne Natl. Lab. and Univ. of, Illinois/Chicago, Chicago, IL, USA, United StatesCorrespondence Address: Ding, H.
Argonne Natl. Lab. and Univ. of, Illinois/Chicago, Chicago, IL, USAUnited States
Source
Proceedings of SPIE - The International Society for Optical EngineeringVolume
2696Pages
496-506Google Scholar check
Keyword(s):
Metadata
Εμφάνιση πλήρους εγγραφήςΕπιτομή
Using high resolution angle-resolved photoemission spectroscopy (ARPES), we measure the superconducting gap and its momentum dependence in the high temperature superconductors Bi 2Sr 2CaCu 2O 8 (Bi2212) and YBa 2Cu 3O 6.95 (Y123). It is found that umklapp bands due to the incommensurate superlattice in Bi2212 may obscure the intrinsic momentum dependence of the gap. By taking these into consideration, we find a d- wave-like gap function in Bi2212. We also report an unambiguous observation of the superconducting gap in Y123.