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  Out-of-plane orbital characters of intrinsic and doped holes in La2-xSrxCuO4

Chen, C. T., Tjeng, L. H., Kwo, J., Kao, H. L., Rudolf, P., Sette, F., et al. (1992). Out-of-plane orbital characters of intrinsic and doped holes in La2-xSrxCuO4. Physical Review Letters, 68(16), 2543-2546. doi:10.1103/PhysRevLett.68.2543.

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 Creators:
Chen, C. T.1, Author
Tjeng, L. H.2, Author              
Kwo, J.1, Author
Kao, H. L.1, Author
Rudolf, P.1, Author
Sette, F.1, Author
Fleming, R. M.1, Author
Affiliations:
1external, ou_persistent22              
2External Organizations, ou_persistent22              

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 Abstract: Bulk-sensitive, polarization-dependent O K- and Cu L-edge absorption spectra of single-domain La2-xSrxCuO4 with CuO2 planes tilted off the sample surface were measured. A novel experimental configuration was utilized to achieve complete polarization geometry and eliminate optical path variations. Contrary to previous measurements, our data show for both intrinsic and doped holes a significant amount of 0 2p(z) character, likely associated with apical O, but a very weak Cu 3d3z2-r2 character. These results impose strong constraints on superconductivity models invoking out-of-plane orbitals, and suggest that the apical O 2p(z) orbital may play an important role in high-T(c) phenomena.

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 Dates: 1992-04-20
 Publication Status: Published in print
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Title: Physical Review Letters
  Other : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: Woodbury, N.Y. : American Physical Society
Pages: - Volume / Issue: 68 (16) Sequence Number: - Start / End Page: 2543 - 2546 Identifier: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406_1