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Your search keyword '"Zheng, Yue"' showing total 28 results
Start Over Author "Zheng, Yue" Journal applied physics letters
28 results on '"Zheng, Yue"'

26. Uniaxial strain-modulated conductivity in manganite superlattice (LaMnO3/SrMnO3).

Author

Cao, Dan, Cai, Meng-Qiu, Hu, Wang-Yu, Peng, Jun, Zheng, Yue, and Huang, Hai-Tao

Subjects
STRAINS & stresses (Mechanics), ELECTRONIC modulation, ELECTRIC conductivity, MANGANITE, SUPERLATTICES, MANGANATES, PHASE transitions, TITANATES, DENSITY functionals
Abstract

We have investigated the magnetic ordering and electrical conductivity transitions of (LaMnO3)2/(SrMnO3)2 superlattices grown on SrTiO3 substrate based on density-functional theory. It is found that the uniaxial tensile strain along the z axis of about 1.4% induced a magnetic transition from antiferromagnetic to ferromagnetic ordering. At the interface the orbital order changes from a combination of x2-y2 and 3z2-r2 to x2-y2 as strain becomes more compressive; as a result the electrical transport is transformed from three-dimensions to two-dimensions at the high uniaxial compressive strain. Our results suggest that the out-of-plane electrical conductivity can be modulated and controlled by uniaxial strain. [ABSTRACT FROM AUTHOR]

Published
2011
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27. Thermal behavior of localized surface plasmon resonance of Au/TiO2 core/shell nanoparticle arrays.

Author

Zheng, Yue Bing, Huang, Tony Jun, Desai, Amit Yogesh, Wang, Shi Jie, Tan, Lee Kheng, Gao, Han, and Huan, Alfred Cheng Hon

Subjects
*SURFACE plasmon resonance, *NANOPARTICLES, *GOLD, *TITANIUM dioxide, *ANNEALING of metals, *REDSHIFT, *CRYSTALLIZATION, *ATOMIC force microscopy
Abstract

The authors investigate the thermal behavior of localized surface plasmon resonance (LSPR) of Au/TiO2 core/shell nanoparticle arrays. Thermal annealing is carried out in three different routes, i.e., pre-TiO2 annealing, post-TiO2 annealing, and combinational annealing. It is found that the pre-TiO2 annealing causes a blueshift in LSPR, the combinational annealing results in a redshift, and the post-TiO2 annealing leads to an initial blueshift, followed by a redshift, and finally reverts to a blueshift. These resonance shifts correlate well with morphologic changes in Au cores and crystallization of TiO2 shells revealed by atomic force microscopy, x-ray diffraction, and x-ray photoemission spectroscopy. [ABSTRACT FROM AUTHOR]

Published
2007
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28. Uniaxial strain-modulated conductivity in manganite superlattice (LaMnO3/SrMnO3).

Author

Cao, Dan, Cai, Meng-Qiu, Hu, Wang-Yu, Peng, Jun, Zheng, Yue, and Huang, Hai-Tao

Subjects
*STRAINS & stresses (Mechanics), *ELECTRONIC modulation, *ELECTRIC conductivity, *MANGANITE, *SUPERLATTICES, *MANGANATES, *PHASE transitions, *TITANATES, *DENSITY functionals
Abstract

We have investigated the magnetic ordering and electrical conductivity transitions of (LaMnO3)2/(SrMnO3)2 superlattices grown on SrTiO3 substrate based on density-functional theory. It is found that the uniaxial tensile strain along the z axis of about 1.4% induced a magnetic transition from antiferromagnetic to ferromagnetic ordering. At the interface the orbital order changes from a combination of x2-y2 and 3z2-r2 to x2-y2 as strain becomes more compressive; as a result the electrical transport is transformed from three-dimensions to two-dimensions at the high uniaxial compressive strain. Our results suggest that the out-of-plane electrical conductivity can be modulated and controlled by uniaxial strain. [ABSTRACT FROM AUTHOR]

Published
2011
Full Text
View/download PDF

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