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Effect of Structure on the Electronic Density of States of Doped Lanthanum Cuprate

M. R. Norman·G. J. McMullan·D. L. Novikov·A. J. Freeman
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Abstract

We present a series of detailed band calculations on the various structural phases of doped lanthanum cuprate: HTT, LTO, and LTT. The LTO distortion is shown to have little effect on the electronic density of states (DOS). A fit to the pressure dependence of the superconducting transition temperature indicates that only 2.5% of the DOS is affected by the HTT$\to$ LTO transition. The LTT distortion also has little effect on the DOS for the experimental value of the octahedral tilt angle. Larger tilt angles, though, lead to a dramatic change in the DOS.

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M. R. Norman, G. J. McMullan, D. L. Novikov, A. J. Freeman. 1993-06-03. Effect of Structure on the Electronic Density of States of Doped Lanthanum Cuprate. https://doi.org/10.1103/physrevb.48.9935

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