Phys. Rev. Lett. 74, 5144–5147 (1995)Double Exchange Alone Does Not Explain the Resistivity of La1-xSrxMnO3Received 12 January 1995; published in the issue dated 19 June 1995 The La1-xSrxMnO3 system with 0.2≲x≲0.4 has traditionally been modeled with a “double-exchange” Hamiltonian in which it is assumed that the only relevant physics is the tendency of carrier hopping to line up neighboring spins. We present a solution of the double-exchange model, show it is incompatible with many aspects of the data, and propose that in addition to double-exchange physics a strong electron-phonon interaction arising from the Jahn-Teller splitting of the outer Mn d level plays a crucial role. © 1995 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.74.5144
DOI:
10.1103/PhysRevLett.74.5144
PACS:
75.50.Cc, 72.10.Di, 75.30.Et
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