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Monolayer transition metal dichalcogenides feature tightly bound bright excitons at the degenerate valleys, where electron-hole Coulomb exchange interaction strongly couples the valley pseudospin to the momentum of exciton. Placed on…

Mesoscale and Nanoscale Physics · Physics 2022-06-01 Xu-Chen Yang , Hongyi Yu , Wang Yao

Linking electrode microstructure to electrochemical performance is essential for optimizing Li-ion batteries. However, this requires mechanistic 4D observations at ultimate spatio-temporal scales, which remains elusive. Here we demonstrate…

We report the results of theoretical investigation of electronic structure of ThF$^+$ cation which is one of the most interesting systems to search for the electron electric dipole moment (eEDM) [H. Loh, K.C. Cossel, M.C. Grau, K.-K. Ni,…

Atomic Physics · Physics 2015-05-01 L. V. Skripnikov , A. V. Titov

Experimental evidence of the d-f Coulomb interaction responsible for the resonant x-ray scattering (RXS) from antiferroquadrupolar order in DyB2C2 is presented. The energy dependences of the RXS intensity with polarization analysis are…

Strongly Correlated Electrons · Physics 2009-11-10 T. Matsumura , D. Okuyama , N. Oumi , K. Hirota , H. Nakao , Y. Murakami , Y. Wakabayashi

The halide perovskites have truly emerged as efficient optoelectronic materials and show the promise of exhibiting nontrivial topological phases. Since the bandgap is the deterministic factor for these quantum phases, here we present a…

Materials Science · Physics 2021-03-31 Ravi Kashikar , Mayank Gupta , B. R. K. Nanda

The formation energies and electronic structure of europium doped zinc oxide has been determined using DFT and many-body $GW$ methods. In the absence of intrisic defects we find that the europium-$f$ states are located in the ZnO band gap…

Materials Science · Physics 2016-03-23 M. Lorke , T. Frauenheim , A. L. da Rosa

We consider exciton effects on current in molecular nanojunctions, using a model comprising a two two-level sites bridge connecting free electron reservoirs. Expanding the density operator in the many-electron eigenstates of the uncoupled…

Strongly Correlated Electrons · Physics 2015-05-14 GuangQi Li , Boris D. Fainberg , Abraham Nitzan , Sigmund Kohler , Peter Hänggi

Electron- and hole-doped La$_2$CoMnO$_6$(LCMO) are investigated using first principles DFT calculations. Hole and electron doping are achieved respectively by introducing Sr$^{2+}$ at La$^{3+}$ sites and by inducing O-site vacancies in…

Materials Science · Physics 2021-09-02 Anasua Khan , Swastika Chatterjee , T. K. Nath , A. Taraphder

Transition metal dichalcogenide heterostructures can host interlayer excitons (IXs), which consist of electrons and holes spatially separated in different layers. IXs possess permanent dipoles and have proven to offer a wealth of novel…

Materials Science · Physics 2021-11-24 Darien J. Morrow , Xuedan Ma

Nuclei with static intrinsic octupole deformation or a soft octupole vibrational mode lead to strongly enhanced collective nuclear Schiff? moments. Interaction between electrons and these Schiff moments produce enhanced time reversal (T)…

Nuclear Theory · Physics 2020-01-15 V. V. Flambaum , H. Feldmeier

The electronic structure and magnetic ordering in La$_{1-x}$Pr$_x$Co$_2$P$_2$ ($x=$0, 0.25, and 1) phosphides have been studied theoretically using the fully relativistic spin-polarized Dirac linear muffin-tin orbital (LMTO) band-structure…

Materials Science · Physics 2015-10-23 L. V. Bekenov , S. V. Moklyak , V. N. Antonov

Characterization of the structural and electron transport properties of single chiral molecules provides critical insights into the interplay between their electronic structure and electrochemical environments, providing broader…

Chemical Physics · Physics 2024-09-26 Yueqing Shi , Liya Bi , Zihao Wang , Kangkai Liang , Ji-Kun Li , Xiao-Ye Wang , Wan-Lu Li , Shaowei Li

The topological properties of Bloch bands are intimately tied to the structure of their electronic wavefunctions within the unit cell of a crystal. Here, we show that scanning tunneling microscopy (STM) measurements on the prototypical…

Graphene Oxide (GO) remains a perennial chemical enigma despite its utility in preparing graphene and its functionalization. Epoxides and tertiary alcohols are construed as primary functional groups, but the structural motifs, spectra, and…

Materials Science · Physics 2025-01-27 Musiri M Balakrishnarajan , Gaurav Jhaa , Pattath D Pancharatna

Transition metal doping is commonly used for altering the properties of solid-state materials to suit applications in science and technology. Partially filled $d$-shells of transition metal atoms lead to electronic states with diverse…

Periodically corrugated epitaxial graphene and hexagonal boron nitride (h-BN) on metallic substrates are considered as perspective templates for the self-assembly of nanoparticles arrays. By using first-principles calculations, we determine…

Mesoscale and Nanoscale Physics · Physics 2010-07-13 Oleg V. Yazyev , Alfredo Pasquarello

The dipole moment is a crucial molecular property linked to a molecular system's bond polarity and overall electronic structure. To that end, the electronic dipole moment, which results from the electron density of a system, is often used…

First-principles DFT levels of calculations have been carried out in order to study the structural stability and electronic properties of hydrogen passivated graphene (H-graphene) clusters. Two different shaped clusters, rectangular and…

Materials Science · Physics 2014-05-02 Deepak B Karki , Narayan P Adhikari

Using scanning tunneling microscopy (STM), we experimentally and theoretically investigate isolated platinum phthalocyanine (PtPc) molecules adsorbed on atomically thin NaCl(100) vapor deposited on Au(111). We obtain good agreement between…

Mesoscale and Nanoscale Physics · Physics 2024-01-29 Abhishek Grewal , Christopher C. Leon , Klaus Kuhnke , Klaus Kern , Olle Gunnarsson

We report an optical dipole trap of strontium monohydroxide (SrOH) with 1400(300) trapped molecules. Through optical pumping, we access vibrational states that are proposed for improved probes of the electron's electric dipole moment (eEDM)…