scholarly journals Role of domain walls in the abnormal photovoltaic effect in BiFeO3

2013 ◽  
Vol 4 (1) ◽  
Author(s):  
Akash Bhatnagar ◽  
Ayan Roy Chaudhuri ◽  
Young Heon Kim ◽  
Dietrich Hesse ◽  
Marin Alexe
Keyword(s):  
Domain Walls ◽  
Photovoltaic Effect

Bulk-Controlled Photovoltaic Effect in Nanometer-Thick Ferroelectric Pb(Zr0.2Ti0.8)O3 Thin Films and the Role of Domain Walls

2020 ◽  
Vol 3 (12) ◽  
pp. 11881-11888
Author(s):  
Niranjan Ramakrishnegowda ◽  
David S. Knoche ◽  
Lutz Mühlenbein ◽  
Andriy Lotnyk ◽  
Akash Bhatnagar
Keyword(s):  
Thin Films ◽  
Domain Walls ◽  
Photovoltaic Effect

scholarly journals Pure spin photocurrent in non-centrosymmetric crystals: bulk spin photovoltaic effect

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Haowei Xu ◽  
Hua Wang ◽  
Jian Zhou ◽  
Ju Li
Keyword(s):  
Mirror Symmetry ◽  
Photovoltaic Effect ◽  
Transition Metal Dichalcogenides ◽  
Spin Current ◽  
Pure Spin ◽  
Light Illumination ◽  
Metal Dichalcogenides ◽  
Critical Components ◽  
Topological Crystalline Insulator

AbstractSpin current generators are critical components for spintronics-based information processing. In this work, we theoretically and computationally investigate the bulk spin photovoltaic (BSPV) effect for creating DC spin current under light illumination. The only requirement for BSPV is inversion symmetry breaking, thus it applies to a broad range of materials and can be readily integrated with existing semiconductor technologies. The BSPV effect is a cousin of the bulk photovoltaic (BPV) effect, whereby a DC charge current is generated under light. Thanks to the different selection rules on spin and charge currents, a pure spin current can be realized if the system possesses mirror symmetry or inversion-mirror symmetry. The mechanism of BSPV and the role of the electronic relaxation time $$\tau$$ τ are also elucidated. We apply our theory to several distinct materials, including monolayer transition metal dichalcogenides, anti-ferromagnetic bilayer MnBi2Te4, and the surface of topological crystalline insulator cubic SnTe.

X-Ray Diffraction Applied to the Study of Defects in Surfaces

1984 ◽  
Vol 41 ◽  
Author(s):  
I. K. Robinson ◽  
K. L. D'amico
Keyword(s):  
Long Range ◽  
Domain Walls ◽  
Surface Structures ◽  
Long Range Order ◽  
X Ray Diffraction ◽  
X Ray ◽  
Line Defects ◽  
Reconstructed Surface ◽  
Regular Arrays

AbstractThe role of x-ray diffraction in characterising defects in crystals is reviewed briefly. It is most sensitive to the presence of plane defects which destroy the long-range order. The same argument is shown to apply to line defects in surface structures. Two recent glancing incidence x-ray diffraction experiments provide contrasting examples: randomly distributed steps are found in the Au(110) reconstructed surface, while regular arrays of domain walls modify certain phases of krypton monolayers physisorbed on graphite substrates.

scholarly journals Formation mechanisms of magnetic bubbles in an M -type hexaferrite: Role of chirality reversal at domain walls

2016 ◽  
Vol 94 (22) ◽  
Author(s):  
H. Nakajima ◽  
A. Kotani ◽  
K. Harada ◽  
Y. Ishii ◽  
S. Mori
Keyword(s):  
Domain Walls ◽  
Formation Mechanisms
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