Renner, C;
Kugler, M;
Ono, S;
Ando, Y;
Fischer, O;
(2001)
Scanning Tunneling Spectroscopy of Bi2Sr2CuO6+d: New Evidence for the Common Origin of the Pseudogap and Superconductivity.
Physical Review Letters
, 86
(21)
4911 -4914.
10.1103/PhysRevLett.86.4911.
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Abstract
Using scanning tunneling spectroscopy, we investigated the temperature dependence of the quasiparticle density of states of overdoped Bi2Sr2CuO6+δ between 275 mK and 82 K. Below Tc = 10 K, the spectra show a gap with well-defined coherence peaks at ±Δp≃12 meV, which disappear at Tc. Above Tc, the spectra display a clear pseudogap of the same magnitude, gradually filling up and vanishing at T*≃68 K. The comparison with Bi2Sr2CaCu2O8+δ demonstrates that the pseudogap and the superconducting gap scale with each other, providing strong evidence that they have a common origin.
| Type: | Article |
|---|---|
| Title: | Scanning Tunneling Spectroscopy of Bi2Sr2CuO6+d: New Evidence for the Common Origin of the Pseudogap and Superconductivity |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.86.4911 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.86.4911 |
| Language: | English |
| Additional information: | © 2001 The American Physical Society |
| Keywords: | Scanning, Tunneling, Spectroscopy, Bi2Sr2CuO6+d, Evidence, Common, Origin, Pseudogap, Superconductivity |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery.ucl.ac.uk/id/eprint/9938 |
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