It is shown that the phenomenon of inversion recently discovered in a one-band model [L. C. Lew Yan Voon and M. Willatzen, J. Appl. Phys. 93, 9997 (2003)] is much more general and is present in both multiband theories and in the excited states. Predictions of the one-band and of a four-band model are in good agreement for the ground state. A critical radius of around 15 Å s7 Åd is obtained for ...

Employing ab initio electronic structure calculations, we predict that trigonal tellurium consisting of weakly interacting helical chains undergoes a trivial insulator to strong topological insulator (metal) transition under shear (hydrostatic or uniaxial) strain. The transition is demonstrated by examining the strain evolution of the band structure, the topological Z2 invariant and the concomi...

We investigate the interface state on one-dimensional hyperbolic metamaterial (1DHMM). Initially, we analyze the plasmonic band structure of binary 1DHMM and analytically determine its band crossing condition. Then, we scrutinize the existence of an interface state in the plasmonic band gap of 1DHMM on three types of interfaces: dielectric/1DHMM, metal/1DHMM, and 1DHMM/1DHMM. We find that the b...

Submitted for the MAR13 Meeting of The American Physical Society Tunable topological electronic structures in Sb(111) bilayers: A first-principles study FENG-CHUAN CHUANG, CHIA-HSIU HSU, CHIA-YU CHEN, ZHI-QUAN HUANG, Natl. Sun Yat-sen U., Taiwan, VIDVUDS OZOLINS, UCLA, HSIN LIN, ARUN BANSIL, Northeastern U. — Electronic structure and band topology of a single Sb(111) bilayer in the buckled hone...

OBJECTIVE - To determine if the application of a continuous electrode paste band on precordial leads results in alteration of the electrocardiographic tracing as compared with an adequate amount of electrode paste, and if the former condition does not cause uniform morphologies from V1 to V6. METHODS - The amplitude and morphology of the electrocardiographic waves on the precordial leads in ele...

Atmospheric duct parameters inversion is an important aspect of microwave-band radar and communication system performance evaluation. AIS (Automatic Identification System) one the signal sources used for atmospheric inversion. Before parameters, determining type plays role in results, but current methods ignore this point. We outlined a classifying-inversion method using signals combined with a...

In order to evaluate and study polarimetric SAR interferometry tree height inversion algorithm, three passes of SIR-C/X SAR L band full polarization SLC data were acquired for the same imaging area in the western region of Hetian district, Xinjiang Vygur Autonomous Region of PRC. China. The three images acquired in separate days of Oct. 7, Oct.8 and Oct. 9 of 1994 makes the study of the factors...

A one-dimensional model of the polysilicon-gate-oxide-bulk structure is presented in order to analyze the implanted gate MOS-devices. The influence of the ionized impurity concentration in the polysilicon-gate near the oxide and the charge at the polysilicon-oxide interface on the flat-band voltage, threshold voltage, inversion layer charge and the quasi-static C-V characteristic is quantitativ...

Porosity is one of the key parameters associated with oil reservoirs. Determination of this petrophysical parameter is an essential step in reservoir characterization. Among different linear and nonlinear prediction tools such as multi-regression and polynomial curve fitting, artificial neural network has gained the attention of researchers over the past years. In the present study, two-dimensi...