Xu, Bing Fang, Zhenyao Sánchez-Martínez, Miguel-Ángel Venderbos, Jorn W F Ni, Zhuoliang Qiu, Tian Manna, Kaustuv Wang, Kefeng Paglione, Johnpierre Bernhard, Christian
...
Published in
Proceedings of the National Academy of Sciences of the United States of America
We report the optical conductivity in high-quality crystals of the chiral topological semimetal CoSi, which hosts exotic quasiparticles known as multifold fermions. We find that the optical response is separated into several distinct regions as a function of frequency, each dominated by different types of quasiparticles. The low-frequency intraband...
Lukoyanov, Alexey V. Gramateeva, Lubov N. Knyazev, Yury V. Kuz’min, Yury I. Gupta, Sachin Suresh, K. G.
Published in
Materials
In this study, the ab initio and experimental results for RCuGe ternary intermetallics were reported for R = Tb, Dy, Ho, Er. Our theoretical calculations of the electronic structure, employing local spin density approximation accounting for electron–electron correlations in the 4f shell of Tb, Dy, Ho, Er ions were carried in DFT+U method. The optic...
Zhilyaeva, E. I. Drichko, N. V. Shilov, G. V. Flakina, A. M. Torunova, S. A. Lyubovskaya, R. N.
Published in
Russian Journal of Physical Chemistry A
AbstractThe polarized reflectance and optical conductivity spectra of layered organic conductors D4[MBr4](Solvent): θ-(BEDT-TTF)4HgBr4(DCB), θ-(BEDT-TTF)4CdBr4(DBB), θ-(d8-BEDT-TTF)4CdBr4(DBB), and θ-(BETS)4CdBr4(PhBr) (DCB and DBB = o-dichloro and o-dibromo-benzenes, BEDT-TTF and BETS are bis(ethylenedithio)tetrathia- and bis(ethylenedithio)tetras...
Khusayfan, Najla M. Khanfar, Hazem K.
Published in
Journal of Electronic Materials
In the current study we discuss the formation mechanism and optical performance of cadmium sulfide-arsenic treseleinde heterojunctions. The cadmium sulfide-arsenic treseleinde interfaces are prepared by the physical vapor deposition technique. The deposited thin films of CdS onto amorphous As2Se3 substrates contain both cubic (65%) and hexagonal (3...
Shao, Yinming Sun, Zhiyuan Wang, Ying Xu, Chenchao Sankar, Raman Breindel, Alexander J Cao, Chao Fogler, Michael M Millis, Andrew J Chou, Fangcheng
...
Published in
Proceedings of the National Academy of Sciences of the United States of America
Using polarized optical and magneto-optical spectroscopy, we have demonstrated universal aspects of electrodynamics associated with Dirac nodal lines that are found in several classes of unconventional intermetallic compounds. We investigated anisotropic electrodynamics of [Formula: see text] where the spin-orbit coupling (SOC) triggers energy gaps...
Shao, Yinming Sun, Zhiyuan Wang, Ying Xu, Chenchao Sankar, Raman Breindel, Alexander J Cao, Chao Fogler, Michael M Millis, Andrew J Chou, Fangcheng
...
Using polarized optical and magneto-optical spectroscopy, we have demonstrated universal aspects of electrodynamics associated with Dirac nodal lines that are found in several classes of unconventional intermetallic compounds. We investigated anisotropic electrodynamics of [Formula: see text] where the spin-orbit coupling (SOC) triggers energy gaps...
Grazianetti, Carlo De Rosa, Stefania Martella, Christian Targa, Paolo Codegoni, Davide Gori, Paola Pulci, Olivia Molle, Alessandro Lupi, Stefano
Published in
Nano letters
The exotic electrodynamics properties of graphene come from the linearly dispersive electronic bands that host massless Dirac electrons. A similar behavior was predicted to manifest in freestanding silicene, the silicon counterpart of graphene, thereby envisaging a new route for silicon photonics. However, the access to silicene exploitation in pho...
Duan, Jiahua Chen, Runkun Cheng, Yuan Yang, Tianzhong Zhai, Feng Dai, Qing Chen, Jianing
Published in
Advanced materials (Deerfield Beach, Fla.)
The nontrivial topological origin and pseudospinorial character of electron wavefunctions make edge states possess unusual electronic properties. Twenty years ago, the tight-binding model calculation predicted that zigzag termination of 2D sheets of carbon atoms have peculiar edge states, which show potential application in spintronics and modern i...
Shin, Hee Jun Kim, Jaesu Kim, Sungho Choi, Homin Lee, Sahnghyub Lee, Young Hee Son, Joo-Hiuk Lim, Seong Chu
Published in
Nano letters
We observe that carriers in graphene can be accelerated to the Fermi velocity without heating the lattice. At large Fermi energy | EF| > 110 meV, electrons excited by a high-power terahertz pulse ETHz relax by emitting optical phonons, resulting in heating of the graphene lattice and optical-phonon generation. This is owing to enhanced electron-pho...
Sun, Zhiyuan Basov, Dmitry N Fogler, Michael M
A general relation is derived between the linear and second-order nonlinear ac conductivities of an electron system in the hydrodynamic regime of frequencies below the interparticle scattering rate. The magnitude and tensorial structure of the hydrodynamic nonlinear conductivity are shown to differ from their counterparts in the more familiar kinet...
