2014/09/30 by Julien Varignon, Nicholas C. Bristowe, Eric Bousquet +1 · 1 citation
Chemistry · Materials Science · Physics and Astronomy · #Advanced Materials and Semiconductor Technologies #Advanced Physical and Chemical Molecular Interactions #Chemical and Physical Properties of Materials #Coupling (piping) #Electric field #Electrical conductor #Electronic structure #Lattice (music) #Perovskite (structure) #Symmetry (geometry) #Vanadium #cond-mat.mtrl-sci
paper · pdf · doi:10.1038/srep15364
The first two authors contributed equally
arxiv created 2014/09/30 · openalex publication_date 2015/10/20 · openalex created_date 2017/03/16 · arxiv updated 2017/05/08 · openalex updated_date 2026/08/05
Perovskite oxides are already widely used in industry and have huge potential for novel device applications thanks to the rich physical behaviour displayed in these materials. The key to the functional electronic properties exhibited by perovskites is often the so-called Jahn-Teller distortion. For applications, an electrical control of the Jahn-Teller distortions, which is so far out of reach, would therefore be highly desirable. Based on universal symmetry arguments, we determine new lattice mode couplings that can provide exactly this paradigm, and exemplify the effect from first-principles calculations. The proposed mechanism is completely general, however for illustrative purposes, we demonstrate the concept on vanadium based perovskites where we reveal an unprecedented orbital ordering and Jahn-Teller induced ferroelectricity. Thanks to the intimate coupling between Jahn-Teller distortions and electronic degrees of freedom, the electric field control of Jahn-Teller distortions is of general relevance and may find broad interest in various functional devices.