The second-order nonlinear optical susceptibility ($\chi_{abc}^{(2)}$) and linear electro-optical coefficient ($r_{abc}$) of a large number of single-walled zigzag, armchair and chiral SiC nanotubes...
It is found that all the zigzag chains except the nonmagnetic (NM) Ni and antiferromagnetic (AF) Fe chains which form a twisted two-legger ladder, look like a corner-sharing triangle ribbon, and have...
Optical properties of SiC nanotubes: A systematic $\textit{ab initio}$ study (2007)
The band structure and optical dielectric function $\epsilon$ of single-walled zigzag [(3,0),(4,0),(5,0),(6,0),(8,0),(9,0),(12,0),(16,0),(20,0),(24,0)], armchair...
Intrinsic spin Hall effect in platinum metal (2007)
Guo, G. Y., Murakami, S., Nagaosa, N.
Spin Hall effect in metallic Pt is studied with first-principles relativistic band calculations. It is found that intrinsic spin Hall conductivity (SHC) is as large as $\sim 2000 (\hbar/e)(\Omega...
Current and strain-induced spin polarization in InGaN/GaN superlattices (2007)
Chang, H. J., Chen, T. W., Chen, J. W., Hong, W. C., Tsai, W. C., Chen, Y. F., ...
The lateral current-induced spin polarization in InGaN/GaN superlattices (SLs) without an applied magnetic field is reported. The fact that the sign of the nonequilibrium spin changes as the current...
Guo, G. Y., Ishibashi, S., Tamura, T., Terakura, K.
{\it Ab initio} investigations of the full static dielectric response and Born effective charge of BN nanotubes (BN-NTs) have been performed for the first time using finite electric field method. It...
Systematic {\em ab initio} study of the phase diagram of epitaxially strained SrTiO$_3$ (2006)
Lin, Chien-Hung, Huang, Chih-Meng, Guo, G. Y.
We use density-functional theory with the local-density approximation to study the structural and ferroelectric properties of SrTiO$_3$ under misfit strains. Both the antiferrodistortive (AFD) and...
Band structure of honeycomb photonic crystal slabs (2006)
Two-dimensional (2D) honeycomb photonic crystals with cylinders and connecting walls have the potential to have a large full band gap. In experiments, 2D photonic crystals do not have an infinite...
Chen, Tsung-Wei, Huang, Chih-Meng, Guo, G. Y.
We study theoretically the spin and orbital angular momentum (OAM) Hall effect in a high mobility two-dimensional electron system with Rashba and Dresselhuas spin-orbit coupling by introducing both...
We have theoretically designed three families of the half-metallic (HM) antiferromagnets (AFM), namely, La$A$VOsO$_6$, La$A$MoTcO$_6$ and La$A$MoReO$_6$ ($A$ = Ca, Sr, Ba), based on a systematic {\it...
Ab initio calculation of intrinsic spin Hall effect in semiconductors (2005)
Guo, G. Y., Yao, Yugui, Niu, Qian
Relativistic band theoretical calculations reveal that intrinsic spin Hall conductivity in hole-doped archetypical semiconductors Ge, GaAs and AlAs is large $[\sim 100 (\hbar/e)(\Omega cm)^{-1}]$,...
Second-harmonic generation and linear electro-optical coefficients of BN nanotubes (2005)
A systematic {\it ab initio} study of the second-order nonlinear optical properties of BN nanotubes within density functional theory in the local density approximation has been performed. Highly...
Nature of Orbital Ordering in La_0.5Sr_1.5MnO_4 is Studied by Soft X-ray Linear Dichroism (2003)
Huang, D. J., Wu, W. B., Guo, G. Y., Lin, H-J, Hou, T. Y., Chang, C. F., ...
We found that the conventional model of orbital ordering of 3x^2-r^2/3y^2-r^2 type in the eg states of La_0.5Sr_1.5MnO_4 is incompatible with measurements of linear dichroism in the Mn 2p-edge x-ray...
GROUND STATE PROPERTIES AND ELECTRONIC STRUCTURE OF HIGH T(c) SUPERCONDUCTORS (1988)
Stocks, G M, Temmerman, W M, Szotek, Z, Guo, G Y, Durham, P J