Thermal-expansion-derived lattice instability in La2CuO4 |
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| Authors: | M Lang A Höhr H Spille F Steglich H Rietschel G Roth Y Hidaka T Murakami |
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| Institution: | (1) Institut für Festkörperphysik, Technische Hochschule Darmstadt, Hochschulstrasse 2, D-6100 Darmstadt, Federal Republic of Germany;(2) Institut für Nukleare Festkörperphysik, Kernforschungszentrum Karlsruhe, P.O.B. 3640, D-7500 Karlsruhe, Federal Republic of Germany;(3) NTT Electrical Comm. Labs., Nippon Telegraph & Telephone Corp., Tokai-Mura, Naka-Gun, 319-11 Ibaraki-Ken, Japan |
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| Abstract: | We present results for the thermal expansion,  (T), of both polycrystalline and single crystalline La2CuO4. Our results demonstrate the existence of an anomaly in (T) aroundT=35 K which is clearly intrinsic and most likely due to a lattice instability. |
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