Results 61 to 70 of about 2,510,089 (205)

Structural varieties of 2D boron nitride

Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов
Using the density functional theory method, geometric optimization of layered polymorphic varieties of boron nitride, in which atoms are located in three different structural positions, was carried out and their energy and electronic properties were ...
D.S. Ryashentsev, M.E. Belenkov, L.Y. Kovalenko   +2 more
doaj   +1 more source

Crystal structure and electronic structure of quaternary semiconductors Cu$_2$ZnTiSe$_4$ and Cu$_2$ZnTiS$_4$ for solar cell absorber

, 2012
We design two new I2-II-IV-VI4 quaternary semiconductors Cu$_2$ZnTiSe$_4$ and Cu$_2$ZnTiS$_4$, and systematically study the crystal and electronic structure by employing first-principles electronic structure calculations.
Blaha P., Junjie Li, Sumei Huang, Wenhui Xie, Xiaofeng Wang, Zhenjie Zhao   +5 more
core   +1 more source

Investigation of LaAlO3 pervoskite compound for optoelectronic and thermoelectric devices under pressure

Materials Research Express, 2020
The electronic, optical and thermoelectric properties of LaAlO _3 are studied under different pressure ranges (0–40 GPa) by using the full potential linear augmented plane wave method (FP-LAW).
Muhammad Yaseen, Amna Ashfaq, Anam Akhtar, Rida Asghar, Hina Ambreen, Mehwish Khalid Butt, Saima Noreen, Shafiq Ur Rehman, Shamsa Bibi, Shahid M Ramay, Adil Murtaza   +10 more
doaj   +1 more source

Nonlinear looped band structure of Bose-Einstein condensates in an optical lattice

, 2016
We study experimentally the stability of excited, interacting states of bosons in a double-well optical lattice in regimes where the nonlinear interactions are expected to induce "swallowtail" looped band structure.
Brown, Roger C., Goldschmidt, Elizabeth A., James, Koller, Silvio B., Porto, V., Wilson, Ryan W., Wyllie, Robert   +6 more
core   +1 more source

Dynamical conductivity in multiply-degenerate point-nodal semimetal CoSi [PDF]

, 2019
We investigate the dynamical conductivity in multiply-degenerate point-nodal semimetal CoSi. In the semimetal, the band structure holds point nodes at the $\Gamma$ and R points in the Brillouin zone and more than three bands touch at the nodes.
Habe, Tetsuro
core   +2 more sources

Liquid Surface Wave Band Structure Instabilities

, 1997
We study interfacial instabilities between two spatially periodically sheared ideal fluids. Bloch wavefunction decompositions of the surface deformation and fluid velocities result in a nonhermitian secular matrix with an associated band structure that ...
Chou, Tom
core   +1 more source

Electronic Structure of Calcium Hexaboride within the Weighted Density Approximation [PDF]

, 2004
We report calculations of the electronic structure of CaB$_6$ using the weighted density approximation (WDA) to density functional theory. We find a semiconducting band structure with a sizable gap, in contrast to local density approximation (LDA ...
C. Filippi, C.O. Rodriguez, C.O. Rodriguez, D. Ceperley, D. Hall, D. J. Singh, D.J. Singh, D.P. Young, D.P. Young, F. Aryasetiawan, G. Ortiz, H. Kino, H. Kino, H.J. Tromp, I.I. Mazin, J.A. Alonso, J.D. Denlinger, J.L. Gavilano, J.P. Perdew, K. Matsubayashi, K. Matsubayashi, L. Balents, L. Hedin, M.C. Aronson, M.E. Zhitomirsky, M.S. Hybertsen, O. Gunnarsson, O. Gunnarsson, O. Gunnarsson, O. Gunnarsson, P. van Gelderen, R. E. Cohen, R. Eder, R.G. Goodrich, R.W. Godby, S. Massidda, S. Murakami, S. Murakami, S. Souma, S.A. Wolf, T. Miyake, V. Barzykin, W. Ku, Zhigang Wu, Zhigang Wu, Zhigang Wu   +45 more
core   +1 more source

Wave propagation in one-dimensional nonlinear acoustic metamaterials

New Journal of Physics, 2017
The propagation of waves in nonlinear acoustic metamaterial (NAM) is fundamentally different from that in conventional linear ones. In this article we consider two one-dimensional (1D) NAM systems featuring respectively a diatomic and a tetratomic meta ...
Xin Fang, Jihong Wen, Bernard Bonello, Jianfei Yin, Dianlong Yu   +4 more
doaj   +1 more source

First Principles Study of Zn-Sb Thermoelectrics

, 1997
We report first principles LDA calculations of the electronic structure and thermoelectric properties of $\beta $-Zn$_{4}$Sb$_{3}$. The material is found to be a low carrier density metal with a complex Fermi surface topology and non-trivial dependence ...
A. E. Karakosov, B. C. Sales, C. M. Hurd, D. J. Singh, D. J. Singh, D. J. Singh, D. J. Singh, D. J. Singh, G. Mahan, I. I. Mazin, J. L. Feldman, J. L. Feldman, J. M. Ziman, J. P. Fleurial, L. Hedin, L. Nordstrom, O. K. Anderson, Seong-Gon Kim, T. Caillat, W. W. Schulz   +19 more
core   +1 more source

Bandgap narrowing in Mn doped GaAs probed by room-temperature photoluminescence

, 2015
The electronic band structure of the (Ga,Mn)As system has been one of the most intriguing problems in solid state physics over the past two decades.
Gao, K., Grenzer, J., Helm, M., Huebner, R., Khalid, M., Prucnal, S., Rebohle, L., Schmidt, H., Skorupa, I., Skorupa, W., Vines, L., Wang, Y., Weschke, E., Zhou, S.   +13 more
core   +1 more source