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Direct Arpes and TC Enhancement in Compressively Strained LSCO-214 Films

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New Challenges in Superconductivity: Experimental Advances and Emerging Theories

Part of the book series: NATO Science Series II: Mathematics, Physics and Chemistry ((NAII,volume 183))

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Abstract

Direct ARPES studies on in-situ grown strained LSCO-214 films show striking strain effects on the electronic structure. The Fermi surface (FS) of LSCO-214 evolves with doping, yet changes even more significantly with strain. The compressive strain changes the Fermi surface topology from hole-like to electron-like and causes band dispersion along kx and the Fermi level crossing before the Brillouin zone boundary, in sharp contrast to the ‘usual’ flat band remaining ≈30meV below EF measured on unstrained samples. The associated reduction of the density of states does not diminish the superconductivity; rather, Tc is strongly enhanced (up to factor of two) in compressively strained thin films.

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Author information

Authors and Affiliations

  1. Institute of Physics of Complex Matter, FSB, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland

    Davor Pavuna, Mike Abrecht, Daniel Ariosa & Dominique Cloetta

Authors
  1. Davor Pavuna
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  2. Mike Abrecht
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  3. Daniel Ariosa
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  4. Dominique Cloetta
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Editor information

Editors and Affiliations

  1. University of Miami, FL, USA

    J. Ashkenazi , Joshua L. Cohn  & Fulin Zuo ,  & 

  2. Kazan State University, Kazan, Russian Federation

    Mikhail V. Eremin

  3. Freie Universität Berlin, Germany

    Ilya Eremin

  4. Max-Planck-Institute for Solid State Research, Stuttgart, Germany

    Dirk Manske

  5. EPFL, Institute of Physics of Complex Matter, Lausanne, Switzerland

    Davor Pavuna

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Pavuna, D., Abrecht, M., Ariosa, D., Cloetta, D. (2005). Direct Arpes and TC Enhancement in Compressively Strained LSCO-214 Films. In: Ashkenazi, J., et al. New Challenges in Superconductivity: Experimental Advances and Emerging Theories. NATO Science Series II: Mathematics, Physics and Chemistry, vol 183. Springer, Dordrecht. https://doi.org/10.1007/1-4020-3085-1_2

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