Journal
PHYSICAL REVIEW LETTERS
Volume 109, Issue 26, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.109.267602
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Funding
- Department of Energy, Office of Basic Energy Sciences [ER-46612]
- ARO [W911NF-12-1-0085]
- ONR [N00014-11-1-0384, N00014-08-1-0915, N00014-07-1-0825]
- NSF [DMR-1066158, DMR-0701558]
- Shanghai Institutions of Higher Education, Shanghai Municipal Education Commission
- National Natural Science Foundation of China [11274222]
- MRI from NSF [0722625]
- Department of Defense
- Direct For Computer & Info Scie & Enginr
- Division Of Computer and Network Systems [0959124] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1066158] Funding Source: National Science Foundation
- EPSCoR
- Office Of The Director [0918970] Funding Source: National Science Foundation
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Ab initio computations are performed to investigate properties of bulk material and epitaxial films made of EuTiO3 (ETO). A whole family of nanoscale twinned phases, that present complex oxygen octahedra tilting (OOT) and unusual antiferroelectricity, is found to be degenerate in energy with simpler phases (all possessing typical OOT) in bulk ETO. Such degeneracy provides a successful explanation of recently observed anomalous phenomena. The calculations also lead to revisiting the (rich) phase diagram of ETO films. DOI: 10.1103/PhysRevLett.109.267602
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