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Spectroscopic data on alkali-atom dimers residing on the surface of liquid helium nanodroplets have revealed that they are detected primarily in the weakly bound, metastable, spin-triplet state. Here, by measuring the magnetic Stern-Gerlach…

Atomic and Molecular Clusters · Physics 2025-05-16 Thomas H. Villers , Benjamin S. Kamerin , Vitaly V. Kresin

We present an experimental study for polycrystalline samples of the diluted magnetic semiconductor Mn(x)Ga(1-x)N (x<0.04) in order to address some of the existing controversial issues. Different techniques were used to characterize the…

Materials Science · Physics 2018-04-18 A. Furrer , K. W. Kraemer , A. Podlesnyak , V. Pomjakushin , D. Sheptyakov , O. V. Safonova

Recent advances in Generalized Ensemble simulations and microcanonical analysis allowed the investigation of structural transitions in polymer models over a broad range of local bending and torsion strengths. It is reasonable to argue that…

Soft Condensed Matter · Physics 2022-09-07 B. B. Rodrigues , J. C. S. Rocha , B. V. Costa

Magnesium hydroxide (Mg(OH)2) has a layered brucite-like structure in its bulk form and was recently isolated as a new member of 2D monolayer materials. We investigated the electronic and optical properties of monolayer crystals of Mg(OH)2…

Mesoscale and Nanoscale Physics · Physics 2016-11-09 M. Yagmurcukardes , E. Torun , R. T. Senger , F. M. Peeters , H. Sahin

Coherent topologically close-packed nanoplates in magnesium alloys can effectively improve strength and creep resistance.However, the formation mechanisms of several metastable TCP nanoplates remain unclear, and the traditional…

Materials Science · Physics 2025-04-03 Junyuan Bai , Xueyong Pang , Gaowu Qin

Light-driven plasmonic enhancement of chemical reactions on metal catalysts is a promising strategy to achieve highly selective and efficient chemical transformations. The study of plasmonic catalyst materials has traditionally focused on…

Materials Science · Physics 2021-06-16 Oscar A. Douglas-Gallardo , Connor L. Box , Reinhard J. Maurer

We investigate the effect of hyperfine interactions on ultracold molecular collisions in magnetic fields, using ^{24}Mg(^1S) + ^{14}NH(^3Sigma^-) as a prototype system. We explore the energy and magnetic field dependence of the cross…

Chemical Physics · Physics 2013-05-10 Maykel L. González-Martínez , Jeremy M. Hutson

We have used diffusion Monte Carlo (DMC) calculations to study the structural properties of magnesium hydride (MgH$_2$), including the pressure-volume equation of state, the cohesive energy and the enthalpy of formation from magnesium bulk…

Materials Science · Physics 2009-11-13 M. Pozzo , D. Alfè

$^4$He nanodroplets doped with an alkali ion feature a snowball of crystallized layers surrounded by superfluid helium. For large droplets, we predict that a transitional supersolid layer can form, bridging between the solid core and the…

Quantum Gases · Physics 2025-03-12 Juan Carlos Acosta Matos , Panos Giannakeas , Matteo Ciardi , Thomas Pohl , Jan M. Rost

Isolated hydrogen, deuterium, and muonium in diamond have been studied by path-integral molecular dynamics simulations in the canonical ensemble. Finite-temperature properties of these point defects were analyzed in the range from 100 to…

Materials Science · Physics 2009-11-11 Carlos P. Herrero , Rafael Ramirez , Eduardo R. Hernandez

Based on ab initio molecular dynamics simulations, we determined the melting curve of magnesium (Mg) up to ~460 GPa using the solid-liquid coexistence method. Between ~30 and 100 GPa, our melting curve is noticeably lower than those from…

Materials Science · Physics 2022-05-24 Chengfeng Cui , Jiawei Xian , Haifeng Liu , Fuyang Tian , Xingyu Gao , Haifeng Song

Mixed $^3$He-$^4$He droplets created by hydrodynamic instability of a cryogenic fluid-jet may acquire angular momentum during their passage through the nozzle of the experimental apparatus. These free-standing droplets cool down to very low…

Quantum Gases · Physics 2020-08-12 Marti Pi , Francesco Ancilotto , Jose' Maria Escartin , Ricardo Mayol , Manuel Barranco

Ab initio computed interaction forces are employed in order to describe the microsolvation of the A$_2^+(^2\Sigma)$ (A=Li,Na,K) molecular ion in $^4$He clusters of small variable size. The minimum energy structures are obtained by…

Chemical Physics · Physics 2016-09-28 F. Marinetti , Ll. Uranga-Piña , E. Coccia , D. López-Durán , E. Bodo , F. A. Gianturco

Recently, it was shown how the primary steps of solvation of a single Na$^+$ ion, instantly created at the surface of a nanometer-sized droplet of liquid helium, can be followed at the atomic level [Albrectsen et al. Nature $\textbf{623}$,…

Magnesium atoms fully embedded in helium nanodroplets are exposed to two-color laser pulses, which trigger multiphoton above-threshold ionization (ATI). This allows to exemplarily study the contribution of a dense, neutral and finite medium…

Atomic and Molecular Clusters · Physics 2022-01-19 B. Krebs , V. A. Tulsky , L. Kazak , M. Zabel , D. Bauer , J. Tiggesbäumker

We revisit the problem of adsorption of a single He-4 layer on graphene, focusing on the commensurate C1/3 crystalline phase, specifically on whether it may possess a nonzero superfluid response, and on the existence of superfluid phases,…

Strongly Correlated Electrons · Physics 2024-08-26 Siyuan Yu , Massimo Boninsegni

The density-of-states (DOS) and one-particle spectral function $\rm A({\bf k}, \omega)$ of the one- and two-orbital models for manganites, the latter with Jahn-Teller phonons, are evaluated using Monte Carlo techniques. Unexpectedly robust…

Strongly Correlated Electrons · Physics 2009-10-31 Adriana Moreo , Seiji Yunoki , Elbio Dagotto

We report experimental studies on enhancing the magnetoelectric (ME) coupling of Co$_4$Nb$_2$O$_9$ by substitution of non-magnetic metal Mg for Co. A series of single crystal Co$_{4-x}$Mg$_x$Nb$_2$O$_9$ (x=0, 1, 2, 3) with a single-phase…

Materials Science · Physics 2018-08-10 Zhen Li , Yiming Cao , Yin Wang , Ya Yang , Maolin Xiang , Youshuang Yu , Baojuan Kang , Jincang Zhang , Shixun Cao

A new type of the single-molecule magnet [Mn_4 O_3 Cl_4 (O_2 CEt)_3(py)_3] forms dimers. Recent magnetic hysteresis measurements on this single-molecular magnet revealed interesting phenomena: an absence of quantum tunneling at zero…

Materials Science · Physics 2009-11-10 Kyungwha Park , Mark R. Pederson , Noam Bernstein

We present the synthesis of D0$_{22}$ Mn$_{3 - \delta}$Ga ($\delta$ = 0, 1) Heusler alloys by Spark Plasma Sintering method. The single phase Mn$_3$Ga (T$_\mathrm{c}$ $\simeq$ 780 K) is synthesized, while Mn$_2$Ga (T$_\mathrm{c}$ $\simeq$…