000172057 001__ 172057 000172057 005__ 20210129214351.0 000172057 0247_ $$2arXiv$$aarXiv:1410.6886 000172057 0247_ $$2Handle$$a2128/10215 000172057 0247_ $$2altmetric$$aaltmetric:2814126 000172057 037__ $$aFZJ-2014-05606 000172057 1001_ $$0P:(DE-HGF)0$$aLee, Shu-Han$$b0$$eCorresponding Author 000172057 245__ $$aInverse Melting of an Electronic Liquid Crystal 000172057 260__ $$c2014 000172057 3367_ $$0PUB:(DE-HGF)25$$2PUB:(DE-HGF)$$aPreprint$$bpreprint$$mpreprint$$s1426156280_7318 000172057 3367_ $$2ORCID$$aWORKING_PAPER 000172057 3367_ $$2DRIVER$$apreprint 000172057 3367_ $$2DataCite$$aOutput Types/Working Paper 000172057 3367_ $$028$$2EndNote$$aElectronic Article 000172057 3367_ $$2BibTeX$$aARTICLE 000172057 500__ $$a7 pages, 7 figures 000172057 520__ $$aInverse melting refers to the rare thermodynamic phenomenon in which a solid melts into a liquid upon cooling, a transition that can occur only when the ordered (solid) phase has more entropy than the disordered (liquid) phase, and that has so far only been observed in a handful of systems. Here we report the first experimental observation for the inverse melting of an electronic liquid crystalline order in strontium-doped lanthanum nickelate, a compound isostructural with the superconducting cuprates, with a hole doping concentration of 1/3. Using x-ray scattering, we demonstrate that the isotropic charge modulation is driven to nematic order by fluctuating spins and shows an inverse melting transition. Using a phenomenological Landau theory, we show that this inverse melting transition is due to the interlayer coupling between the charge and spin orders. 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