We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Direct observation of electronic-liquid-crystal phase transitions and their microscopic origin in La<sub>1/3</sub>Ca<sub>2/3</sub>MnO<sub>3</sub>.
- Authors
Tao, J.; Sun, K.; Yin, W.-G.; Wu, L.; Xin, H.; Wen, J. G.; Luo, W.; Pennycook, S. J.; Tranquada, J. M.; Zhu, Y.
- Abstract
The ground-state electronic order in doped manganites is frequently associated with a lattice modulation, contributing to their many interesting properties. However, measuring the thermal evolution of the lattice superstructure with reciprocal-space probes alone can lead to ambiguous results with competing interpretations. Here we provide direct observations of the evolution of the superstructure in La1/3Ca2/3MnO3 in real space, as well as reciprocal space, using transmission electron microscopic (TEM) techniques. We show that the transitions are the consequence of a proliferation of dislocations plus electronic phase separation. The resulting states are well described by the symmetries associated with electronic-liquid-crystal (ELC) phases. Moreover, our results resolve the long-standing controversy over the origin of the incommensurate superstructure and suggest a new structural model that is consistent with recent theoretical calculations.
- Publication
Scientific Reports, 2016, p37624
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/srep37624