Correlation of Tunneling Spectra in Bi{sub 2} Sr{sub 2} CaCu{sub 2} O
Journal Article
·
· Physical Review Letters
New break-junction tunneling data are reported in Bi{sub 2}Sr {sub 2}CaCu{sub 2}O{sub 8+{delta}} over a wide range of hole concentration from underdoped (T{sub c}=74 K) to optimal doped (T{sub c}=95 K) to overdoped (T{sub c}=48 K) . The conductances exhibit sharp dips at a voltage, {Omega}/e , measured with respect to the superconducting gap. Clear trends are found such that the dip strength is maximum at optimal doping and that {Omega} scales as 4.9kT{sub c} over the entire doping range. These features link the dip to the resonance spin excitation and suggest quasiparticle interactions with this mode are important for superconductivity.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- (US)
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 40277374
- Journal Information:
- Physical Review Letters, Vol. 87, Issue 6; Other Information: DOI: 10.1103/PhysRevLett.87.067005; Othernumber: PRLTAO000087000006067005000001; 040131PRL; PBD: 6 Aug 2001; ISSN 0031-9007
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
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