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Boron (B) containing III-nitride materials, such as wurtzite (B,Ga)N alloys, have recently attracted significant interest to tailor the electronic and optical properties of optoelectronic devices operating in the visible and ultraviolet…

Materials Science · Physics 2023-08-16 Cara-Lena Nies , Thomas P. Sheerin , Stefan Schulz

Nonlinear optical processes in low dimensional materials are often weak or symmetry forbidden, limiting their use in nanoscale light sources and on chip frequency conversion. Here, we show that combining two weakly nonlinear systems,…

We present a highly sensitive 2D line survey of TMC-1 obtained with the Yebes 40m radio telescope in the Q-band (31.13-49.53 GHz). These maps cover a region of 320 arcsec x 320 arcsec centred on the position of the QUIJOTE line survey with…

Astrophysics of Galaxies · Physics 2023-06-07 J. Cernicharo , B. Tercero , N. Marcelino , M. Agundez , P. de Vicente

An impurity particle interacting with a Bose-Einstein condensate (BEC) leads to the formation of a quasiparticle known as the Bose polaron. We investigate the properties of the two-dimensional Bose polaron, applying a variational ansatz…

Quantum Gases · Physics 2024-12-24 Yasufumi Nakano , Meera M. Parish , Jesper Levinsen

Using first-principle many-body perturbation theory, we investigate the optical properties of 8- borophene at two levels of approximations; the GW method considering only the electron-electron interaction and the GW in combination with the…

Mesoscale and Nanoscale Physics · Physics 2022-01-07 N. Deily Nazar , T. Vazifehshenas , M. R. Ebrahimi , F. M. Peeters

We have built a database of ab-initio total energies for elemental Boron in over 60 hypothetical crystal structures of varying coordination $Z$, such that every atom is equivalent. Fitting to each subset with a particular $Z$, we extract a…

Materials Science · Physics 2009-10-31 W. -J. Zhu , C. L. Henley

The binary metal borides provide a promising platform for searching unique materials with superconductivity and super-hardness under high pressure, owing to the distinctive bonding characters of boron. In this work, combined the…

Superconductivity · Physics 2026-01-21 Juefei Wu , Dexi Shao , Junjie Wang , Yu Han , Bangshuai Zhu , Cuiying Pei , Qi Wang , Jian Sun , Yanpeng Qi

Na$_3$Co$_2$SbO$_6$ is a potential Kitaev magnet with a monoclinic layered crystal structure. Recent investigations of the $C_3$-symmetric sister compound Na$_2$Co$_2$TeO$_6$ have uncovered a unique triple-$\mathbf{q}$ magnetic ground…

In order to find out capable molecular source of astronomically well observed infrared (IR) spectrum, asymmetric molecular configuration polycyclic aromatic hydrocarbon (PAH) was analyzed by the density functional theory (DFT) analysis.…

Astrophysics of Galaxies · Physics 2015-10-27 Norio Ota

Microstructure and mechanical properties of bulk polycristalline boron phosphides (cubic BP and rhombohedral B12P2) have been studied by scanning electron microscopy and micro- and nanoindentation. The obtained data on hardness, elastic…

Materials Science · Physics 2019-04-11 Vladimir L. Solozhenko , Volodymyr Bushlya

{\gamma}-B28 is a recently established high-pressure phase of boron. Its structure consists of icosahedral B12 clusters and B2 dumbbells in a NaCl-type arrangement (B2){\delta}+(B12){\delta}- and displays a significant charge transfer…

By way of the nonequilibrium Green's function simulations and first principles calculations, we report that borophene, a single layer of boron atoms that was fabricated recently, possesses an extraordinarily high lattice thermal conductance…

Materials Science · Physics 2017-05-31 Hangbo Zhou , Yongqing Cai , Gang Zhang , Yong-Wei Zhang

Hyper-Raman scattering has been measured on vitreous boron oxide, $v-$B$_2$O$_3$. This spectroscopy, complemented with Raman scattering and infrared absorption, reveals the full set of vibrations that can be observed with light. A mode…

Disordered Systems and Neural Networks · Physics 2009-11-13 G. Simon , B. Hehlen , R. Vacher , E. Courtens

The research on multiferrocity and magnetoelectric coupling in metal-organic system is rare. Very few hybrid organic-inorganic frameworks (HOIF) exhibit direct magnetoelectric coupling (coupling between spins and dipoles) and also…

Ordered double perovskite oxides of the general formula, A2BB'O6, have been known for several decades to have interesting electronic and magnetic properties. However, a recent report of a spectacular negative magnetoresistance effect in a…

Strongly Correlated Electrons · Physics 2015-06-24 D. D. Sarma

Aromaticity is one of the most widely used chemical concepts. Current definitions are purely phenomenological and relate symmetry, reactive stability and the occurence of molecular diamagnetic response currents. The antithetical concept of…

Chemical Physics · Physics 2020-04-20 Raphael J. F. Berger , Alexandre Viel

We model monolayer graphene-like materials with BC$_6$N stoichiometry where the bonding between the B and the N atoms plays an important role for their physical and chemical properties. Two types of BC$_6$N are found based on the BN bonds:…

Mesoscale and Nanoscale Physics · Physics 2020-08-26 Nzar Rauf Abdullah , Hunar Omar Rashid , Chi-Shung Tang , Andrei Manolescu , Vidar Gudmundsson

Rhombohedral B$_{12}$ unit is viewed as a host matrix embedding linear tri-atomic arrangements of elements (E) resulting in a relatively large family of boron-rich compounds with B$_{12}${E-E-E} generic formulation. The present work focuses…

Materials Science · Physics 2021-01-13 Samir F. Matar , Vladimir L. Solozhenko

Compressibility of boron subarsenide B12As2 has been studied by synchrotron X-ray diffraction up to 47 GPa at room temperature in a diamond anvil cell using Ne pressure transmitting medium. A fit of experimental p-V data by Vinet equation…

Materials Science · Physics 2018-07-16 Kirill A. Cherednichenko , Yann Le Godec , Vladimir L. Solozhenko

Recently reported anomalies in the double-photonionization spectra of aromatic molecules such as benzene, naphthalene, anthracene and coronene are attributed to Coulomb-pair resonances of pi electrons.

Chemical Physics · Physics 2013-12-03 D. L. Huber