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Phys. Rev. Lett. 96, 067005 (2006) [4 pages]

Elastic Scattering Susceptibility of the High Temperature Superconductor Bi2Sr2CaCu2O8+δ: A Comparison between Real and Momentum Space Photoemission Spectroscopies

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K. McElroy1,*, G.-H. Gweon2, S. Y. Zhou2, J. Graf1, S. Uchida3, H. Eisaki4, H. Takagi5,6,7, T. Sasagawa5,6, D.-H. Lee1,2, and A. Lanzara1,2
1Material Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
2Physics Department, University of California, Berkeley, California 94720, USA
3Department of Physics, University of Tokyo, Yayoi, 2-11-16 Bunkyoku, Tokyo 113-8656, Japan
4AIST, 1-1-1 Central 2, Umezono, Tsukuba, Ibaraki 305-8568, Japan
5Department of Advanced Materials Science, University of Tokyo, Kashiwa, Chiba 277-8561, Japan
6CREST, Japan Science and Technology Agency, Saitama 332-0012, Japan
7RIKEN (The Institute of Physical and Chemical Research), Wako 351-0198, Japan

Received 9 May 2005; published 15 February 2006

The joint density of states of Bi2Sr2CaCu2O8+δ is calculated by evaluating the autocorrelation of the single particle spectral function A(k⃗,ω) measured from angle resolved photoemission spectroscopy (ARPES). These results are compared with Fourier transformed (FT) conductance modulations measured by scanning tunneling microscopy (STM). Good agreement between the two experimental probes is found for two different doping values examined. In addition, by comparing the FT-STM results to the autocorrelated ARPES spectra with different photon polarization, new insight on the form of the STM matrix elements is obtained. This shines new light on unsolved mysteries in the tunneling data.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.96.067005
DOI:
10.1103/PhysRevLett.96.067005
PACS:
74.72.Hs, 73.43.Fj, 79.60.−i

*Electronic address: KPMcElroy@lbl.gov

 
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