Theoretical modeling of antiferrodistortive phase transition for SrTiO3 ultrathin films
被引:14
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作者:
Blokhin, E.
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Max Planck Inst Solid State Res, Stuttgart, GermanyMax Planck Inst Solid State Res, Stuttgart, Germany
Blokhin, E.
[1
]
Evarestov, R. A.
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Max Planck Inst Solid State Res, Stuttgart, Germany
St Petersburg State Univ, Dept Quantum Chem, Peterhof, RussiaMax Planck Inst Solid State Res, Stuttgart, Germany
Evarestov, R. A.
[1
,2
]
Gryaznov, D.
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Max Planck Inst Solid State Res, Stuttgart, Germany
Latvian State Univ, Inst Solid State Phys, LV-1063 Riga, LatviaMax Planck Inst Solid State Res, Stuttgart, Germany
Gryaznov, D.
[1
,3
]
Kotomin, E. A.
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Max Planck Inst Solid State Res, Stuttgart, Germany
Latvian State Univ, Inst Solid State Phys, LV-1063 Riga, LatviaMax Planck Inst Solid State Res, Stuttgart, Germany
Kotomin, E. A.
[1
,3
]
Maier, J.
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Max Planck Inst Solid State Res, Stuttgart, GermanyMax Planck Inst Solid State Res, Stuttgart, Germany
Maier, J.
[1
]
机构:
[1] Max Planck Inst Solid State Res, Stuttgart, Germany
[2] St Petersburg State Univ, Dept Quantum Chem, Peterhof, Russia
[3] Latvian State Univ, Inst Solid State Phys, LV-1063 Riga, Latvia
Combining group-theoretical analysis and first-principles density functional theory calculations, we confirm theoretically the antiferrodistortive phase transition in ultrathin SrTiO3 (001) TiO2-terminated films and compare it with a similar transition in the bulk. We demonstrate phonon softening at the M point of the surface Brillouin zone and analyze the change in the calculated electronic and phonon properties upon phase transition.