Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Pateras, Anastasios"'
Autor:
Ahn, Youngjun, Everhardt, Arnoud S., Lee, Hyeon Jun, Park, Joonkyu, Pateras, Anastasios, Damerio, Silvia, Zhou, Tao, DiChiara, Anthony D., Wen, Haidan, Noheda, Beatriz, Evans, Paul G.
Publikováno v:
Phys. Rev. Lett. 127, 097402 (2021)
Optical excitation perturbs the balance of phenomena selecting the tilt orientation of domain walls within ferroelectric thin films. The high carrier density induced in a low-strain BaTiO3 thin film by an above-bandgap ultrafast optical pulse changes
Externí odkaz:
http://arxiv.org/abs/2008.06819
Autor:
Pateras, Anastasios, Harder, Ross, Cha, Wonsuk, Gigax, Jonathan G., Baldwin, J. Kevin, Tischler, Jon, Xu, Ruqing, Liu, Wenjun, Erdmann, Mark J., Kalt, Robert, Sandberg, Richard L., Fensin, Saryu, Pokharel, Reeju
Measurement modalities in Bragg coherent diffraction imaging (BCDI) rely on finding signal from a single nanoscale crystal object, which satisfies the Bragg condition among a large number of arbitrarily oriented nanocrystals. However, even when the s
Externí odkaz:
http://arxiv.org/abs/2002.11859
Autor:
Pateras, Anastasios, Park, Joonkyu, Ahn, Youngjun, Tilka, Jack A., Holt, Martin V., Reichl, Christian, Wegscheider, Werner, Baart, Timothy A., Dehollain, Juan Pablo, Mukhopadhyay, Uditendu, Vandersypen, Lieven M. K., Evans, Paul G.
Publikováno v:
Nano Lett. 18, 2780 (2018)
Quantum devices formed in high-electron-mobility semiconductor heterostructures provide a route through which quantum mechanical effects can be exploited on length scales accessible to lithography and integrated electronics. The electrostatic definit
Externí odkaz:
http://arxiv.org/abs/2002.11067
Autor:
Park, Joonkyu, Ahn, Youngjun, Tilka, Jack A., Lee, Hyeon Jun, Pateras, Anastasios, Yusuf, Mohammed H., Dawber, Matthew, Wen, Haidan, Evans, Paul G.
The spontaneously formed striped polarization nanodomain configuration of a PbTiO${_3}$/SrTiO${_3}$ superlattice transforms to a uniform polarization state under above-bandgap illumination with a time dependence varying with the intensity of optical
Externí odkaz:
http://arxiv.org/abs/1912.04878
Akademický článek
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Autor:
Maddali, Siddharth, Li, Peng, Pateras, Anastasios, Timbie, Daniel, Delegan, Nazar, Crook, Alex, Lee, Hope, Calvo-Almazan, Irene, Sheyfer, Dina, Cha, Wonsuk, Heremans, F. Joseph, Awschalom, David D., Chamard, Virginie, Allain, Marc, Hruszkewycz, Stephan O.
In this two-part article series we provide a generalized description of the scattering geometry of Bragg coherent diffraction imaging (BCDI) experiments, the shear distortion effects inherent to the resulting three-dimensional (3D) image from current
Externí odkaz:
http://arxiv.org/abs/1909.05353
Autor:
Li, Peng, Maddali, Siddharth, Pateras, Anastasios, Calvo-Almazan, Irene, Hruszkewycz, Stephan O., Chamard, Virginie, Allain, Marc
X-ray Bragg coherent diffraction imaging has been demonstrated as a powerful three-dimensional (3D) microscopy approach for the investigation of sub-micrometer-scale crystalline particles. It is based on the measurement of a series of coherent diffra
Externí odkaz:
http://arxiv.org/abs/1909.05354
Autor:
Ahn, Youngjun, Pateras, Anastasios, Marks, Samuel D., Xu, Han, Zhou, Tao, Luo, Zhenlin, Chen, Zuhuang, Chen, Lang, Zhang, Xiaoyi, DiChiara, Anthony D., Wen, Haidan, Evans, Paul G.
Publikováno v:
Phys. Rev. Lett. 123, 045703 (2019)
Above-bandgap optical illumination induces a transformation from tilted tetragonal-like (T-like) and rhombohedral-like (R-like) phases to an untilted T-like phase in compressively strained BiFeO3. Optical excitation leads to an out-of-plane lattice e
Externí odkaz:
http://arxiv.org/abs/1901.08684
Autor:
Pateras, Anastasios
La ptychographie est une technique d’imagerie par diffraction cohérente qui vise à récupérer la phase perdue, uniquement par des mesures d’intensité en champ lointain. Cette technique permet l’imagerie des champs de déformation dans des c
Externí odkaz:
http://www.theses.fr/2015AIXM4366
Autor:
Ahn, Youngjun, Park, Joonkyu, Pateras, Anastasios, Rich, Matthew B., Zhang, Qingteng, Chen, Pice, Yusuf, Mohammed H., Wen, Haidan, Dawber, Matthew, Evans, Paul G.
Publikováno v:
Phys. Rev. Lett. 119, 057601 (2017)
The nanodomain pattern in ferroelectric/dielectric superlattices transforms to a uniform polarization state under above-bandgap optical excitation. X-ray scattering reveals a disappearance of domain diffuse scattering and an expansion of the lattice.
Externí odkaz:
http://arxiv.org/abs/1705.01846