Journal article
Inversion Symmetry Breaking by Oxygen Octahedral Rotations in the Ruddlesden-Popper NaRTiO4 Family
Physical review letters, v 112(18), pp 187602-187602
07 May 2014
PMID: 24856722
Abstract
Rotations of oxygen octahedra are ubiquitous, but they cannot break inversion symmetry in simple perovskites. However, in a layered oxide structure, this is possible, as we demonstrate here in A-site ordered Ruddlesden-Popper NaRTiO4 (R denotes rare-earth metal), previously believed to be centric. By revisiting this series via synchrotron x-ray diffraction, optical second-harmonic generation, piezoresponse force microscopy, and first-principles phonon calculations, we find that the low-temperature phase belongs to the acentric space group P(4) over bar 2(1)m, which is piezoelectric and nonpolar. The mechanism underlying this large new family of acentric layered oxides is prevalent, and could lead to many more families of acentric oxides.
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Details
- Title
- Inversion Symmetry Breaking by Oxygen Octahedral Rotations in the Ruddlesden-Popper NaRTiO4 Family
- Creators
- Hirofumi Akamatsu - Pennsylvania State UniversityKoji Fujita - CatalystToshihiro Kuge - CatalystArnab Sen Gupta - Pennsylvania State UniversityAtsushi Togo - CatalystShiming Lei - Pennsylvania State UniversityFei Xue - Pennsylvania State UniversityGreg Stone - Pennsylvania State UniversityJames M. Rondinelli - Drexel UniversityLong-Qing Chen - Pennsylvania State UniversityIsao Tanaka - CatalystVenkatraman Gopalan - Pennsylvania State UniversityKatsuhisa Tanaka - Catalyst
- Publication Details
- Physical review letters, v 112(18), pp 187602-187602
- Publisher
- Amer Physical Soc
- Number of pages
- 5
- Grant note
- 2011B1504; 2013A1683 / Japan Synchrotron Radiation Research Institute (JASRI) 1210588 / Direct For Mathematical & Physical Scien; National Science Foundation (NSF); NSF - Directorate for Mathematical & Physical Sciences (MPS) DMR-0820404; DMR-1210588 / National Science Foundation (NSF) through Materials Research Science and Engineering Centers (MRSEC); National Science Foundation (NSF); NSF - Directorate for Mathematical & Physical Sciences (MPS) 25-185 / JSPS Fellowship for Research Abroad; Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT); Japan Society for the Promotion of Science 22-1280 / Japan Society of the Promotion of Science (JSPS) Fellowship; Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT); Japan Society for the Promotion of Science
- Resource Type
- Journal article
- Language
- English
- Web of Science ID
- WOS:000336246400006
- Scopus ID
- 2-s2.0-84899931735
- Other Identifier
- 991019330796504721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Physics, Multidisciplinary