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State-of-the-art quantum chemical methods are applied to the study of the multiorbital correlated electronic structure of a Fe-As compound, the recently discovered LiFeAs. Our calculations predict a high-spin, S=2, ground-state…

Strongly Correlated Electrons · Physics 2009-04-01 L. Hozoi , P. Fulde

Observations are revealing the ubiquity of filamentary structures in molecular clouds. As cores are often embedded in filaments, it is important to understand how line profiles from such systems differ from those of isolated cores. We…

Astrophysics of Galaxies · Physics 2015-06-04 Rowan J. Smith , Rahul Shetty , Amelia M. Stutz , Ralf S. Klessen

Aquation free energy profiles of neutral cisplatin and cationic monofunctional derivatives, including triaminochloroplatinum(II) and cis-diammine(pyridine)chloroplatinum(II), were computed using state of the art thermodynamic integration,…

We report an advanced organic spin-interface architecture with magnetic remanence at room temperature, constituted by metal phthalocyanine molecules magnetically coupled with Co layer(s), mediated by graphene. Fe- and Cu-phthalocyanines…

Using a recently developed method combining a nonspherical self-interaction corrected LDA+$U$ scheme and an on-site multi-body Hamiltonian [Phys.\ Rev.\ B 83, 085106 (2011)], we calculate the crystal field parameters and crystal field (CF)…

Strongly Correlated Electrons · Physics 2015-11-17 Fei Zhou , Vidvuds Ozolins

A recent thermal Hall conductance experiment [Banerjee et al., Nature {\bf559}, 205 (2018)] for $\nu = 5/2$ fractional quantum Hall system appears to rule out both the Pfaffian and anti-Pfaffian and be in favor of the PH-Pfaffian…

Strongly Correlated Electrons · Physics 2020-01-08 Jian Yang

We report systematic Cu- and F-NMR measurements of five-layered high-Tc cuprates Ba2Ca4Cu5O10(F,O)2. It is revealed that antiferromagnetism (AFM) uniformly coexists with superconductivity (SC) in underdoped regions, and that the critical…

Based on the van der Waals density functional theory (vdW-DFT)+U scheme, we carry out the ab initio molecular dynamics (AIMD) study of the interaction dynamics for H$_{2}$ impingement against the stoichiometric PuO$_{2}$(111), the reduced…

Materials Science · Physics 2015-06-19 Bo Sun , Haifeng Liu , Haifeng Song , Guangcai Zhang , Hui Zheng , Xian-Geng Zhao , Ping Zhang

Electrostatic interactions in polymeric systems are responsible for a wide range of liquid-liquid phase transitions that are of importance for biology and materials science. Such transitions are referred to as complex coacervation, and…

Soft Condensed Matter · Physics 2023-09-29 Boyuan Yu , Heyi Liang , Paul F. Nealey , Matthew Tirrell , Artem M. Rumyantsev , Juan J. de Pablo

The Fe-Cu system has attracted much attention over the last several decades due to its technological importance as a model alloy for Cu steels. In spite of these efforts several aspects of its phase diagram remain unexplained. Here we use…

Materials Science · Physics 2013-11-20 Paul Erhart , Jaime Marian , Babak Sadigh

In order to improve the hydrogen storage properties of calcium hydride (CaH2), we have tuned its thermodynamical properties through fluorination. Using ab-initio total energy calculations based on density functional theory, the structural…

Materials Science · Physics 2017-06-07 R. Varunaa , P. Ravindran

We have successfully synthesized single crystals, solved the crystal structure, and studied the magnetic properties of a new family of copper halides (C$_4$H$_{14}$N$_2$)Cu$_2X_6$ ($X$= Cl, Br). These compounds crystallize in an…

Materials Science · Physics 2023-06-28 P. Biswal , S. Guchhait , S. Ghosh , S. N. Sarangi , D. Samal , Diptikant Swain , Manoranjan Kumar , R. Nath

In this note, we report about two, as it seems to us, rather unusual observations made in molecular dynamics simulations of the single component systems of particles interacting through the harmonic-repulsive pair potential in 3D. In…

Soft Condensed Matter · Physics 2017-10-17 Valentin A. Levashov

The coexistence curves of the liquid-liquid equilibria (LLE) for systems of -caprolactam with heptane, octane, nonane, decane or 2,2,4-trimethylpentane have been determined by the method of the critical opalescence using a laser scattering…

We examine symmetries of chiral four-dimensional vacua of Type IIB flux compactifications with vanishing superpotential $W=0$. We find that the ${\cal N}=1$ supersymmetric MSSM-like and Pati-Salam vacua possess enhanced discrete symmetries…

High Energy Physics - Theory · Physics 2023-12-29 Takafumi Kai , Keiya Ishiguro , Hiroshi Okada , Hajime Otsuka

Kohn-Sham density functional theory and plane wave basis set based ab initio molecular dynamics (AIMD) simulation is a powerful tool for studying complex reactions in solutions, such as electron transfer (ET) reactions involving…

Chemical Physics · Physics 2022-09-07 Sagarmoy Mandal , Ritama Kar , Bernd Meyer , Nisanth N. Nair

We study the electronic structure of HgBa$_2$Ca$_2$Cu$_3$O$_{8+\delta}$ (Hg1223 ; T$_{c}$ = 134 K) using photoemission spectroscopy (PES) and x-ray absorption spectroscopy (XAS). Resonant valence band PES across the O K-edge and Cu L-edge…

Strongly Correlated Electrons · Physics 2017-08-09 A. Chainani , M. Sicot , Y. Fagot-Revurat , G. Vasseur , J. Granet , B. Kierren , L. Moreau , M. Oura , A. Yamamoto , Y. Tokura , D. Malterre

The neutron rich isotope 22Ne may be a significant impurity in carbon and oxygen white dwarfs and could impact how the stars freeze. We perform molecular dynamics simulations to determine the influence of 22Ne in carbon-oxygen-neon systems…

Solar and Stellar Astrophysics · Physics 2015-01-28 J. Hughto , C. J. Horowitz , A. S. Schneider , Zach Medin , Andrew Cumming , D. K. Berry

We provide a unified interpretation of both paramagnon and plasmon modes in high-$T_c$ copper-oxides, and verify it quantitatively against available resonant inelastic $x$-ray scattering (RIXS) data across the hole-doped phase diagram.…

Strongly Correlated Electrons · Physics 2021-08-04 M. Fidrysiak , J. Spałek

Large-scale coronal plasma evolutions can be adequately described by magnetohydrodynamics (MHD) equations. However, full multi-dimensional MHD simulations require substantial computational resources. Given the low plasma $\beta$ in the…

Solar and Stellar Astrophysics · Physics 2024-04-29 Yuhao Zhou , Xiaohong Li , Rony Keppens