Zobrazeno 1 - 10
of 330
pro vyhledávání: '"Zapol, Peter"'
Autor:
Ju, Guangxu, Xu, Dongwei, Thompson, Carol, Highland, Matthew J., Eastman, Jeffrey A., Walkosz, Weronika, Zapol, Peter, Stephenson, G. Brian
Publikováno v:
Phys. Rev. B 105, 054312 (2022)
Burton-Cabrera-Frank (BCF) theory has proven to be a versatile framework to relate surface morphology and dynamics during crystal growth to the underlying mechanisms of adatom diffusion and attachment at steps. For an important class of crystal surfa
Externí odkaz:
http://arxiv.org/abs/2010.09575
Autor:
Ju, Guangxu, Xu, Dongwei, Thompson, Carol, Highland, Matthew J., Eastman, Jeffrey A., Walkosz, Weronika, Zapol, Peter, Stephenson, G. Brian
Publikováno v:
Phys. Rev. B 103, 125402 (2021)
Miscut surfaces of layered crystals can exhibit a stair-like sequence of terraces having periodic variation in their atomic structure. For hexagonal close-packed and related crystal structures with an {\alpha}{\beta}{\alpha}{\beta} stacking sequence,
Externí odkaz:
http://arxiv.org/abs/2010.06166
Autor:
Ju, Guangxu, Xu, Dongwei, Thompson, Carol, Highland, Matthew J., Eastman, Jeffrey A., Walkosz, Weronika, Zapol, Peter, Stephenson, G. Brian
Images of the morphology of GaN (0001) surfaces often show half-unit-cell-height steps separating a sequence of terraces having alternating large and small widths. This can be explained by the $\alpha \beta \alpha \beta$ stacking sequence of the wurt
Externí odkaz:
http://arxiv.org/abs/2007.05083
Autor:
Ju, Guangxu, Xu, Dongwei, Thompson, Carol, Highland, Matthew J., Eastman, Jeffrey A., Walkosz, Weronika, Zapol, Peter, Stephenson, G. Brian
Publikováno v:
Nat Commun 12, 1721 (2021)
The stacking sequence of hexagonal close-packed and related crystals typically results in steps on vicinal {0001} surfaces that have alternating A and B structures with different growth kinetics. However, because it is difficult to experimentally ide
Externí odkaz:
http://arxiv.org/abs/2007.05090
Autor:
Ju, Guangxu, Xu, Dongwei, Highland, Matthew J., Thompson, Carol, Zhou, Hua, Eastman, Jeffrey A., Fuoss, Paul H., Zapol, Peter, Kim, Hyunjung, Stephenson, G. Brian
Publikováno v:
Nature Physics 15, 589 (2019)
Understanding surface dynamics during epitaxial film growth is key to growing high quality materials with controllable properties. X-ray photon correlation spectroscopy (XPCS) using coherent x-rays opens new opportunities for in situ observation of a
Externí odkaz:
http://arxiv.org/abs/1804.08161
Autor:
Ju, Guangxu, Highland, Matthew J., Eastman, Jeffrey A., Sichel-Tissot, Rebecca, Baldo, Peter M., Zapol, Peter, Fuoss, Paul H.
We report the results of x-ray scattering studies of AlN on c-plane sapphire during reactive radiofrequency magnetron sputtering. The sensitivity of in situ x-ray measurements allowed us to follow the structural evolution of strain and roughness from
Externí odkaz:
http://arxiv.org/abs/1709.01968
The surface orientation can have profound effects on the atomic-scale processes of crystal growth, and is essential to such technologies as GaN-based light-emitting diodes and high-power electronics. We investigate the dependence of homoepitaxial gro
Externí odkaz:
http://arxiv.org/abs/1611.03121
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Memristive switching devices, candidates for resistive random access memory technology, have been shown to switch off through a progression of states with quantized conductance and subsequent non-integer conductance (in terms of conductance quantum $
Externí odkaz:
http://arxiv.org/abs/1607.07752
Publikováno v:
In Chemical Physics Letters January 2020 739