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The bilayer heterostructures composed of an ultrathin ferromagnetic metal (FM) and a material hosting strong spin-orbit (SO) coupling are principal resource for SO torque and spin-to-charge conversion nonequilibrium effects in spintronics.…

材料科学 · 物理学 2020-10-28 Kapildeb Dolui , Branislav K. Nikolic

Hydrogen evolution reaction (HER) has emerged as a promising technique for the production of clean and sustainable energy. In recent years, researchers have been exploring various materials for efficient HER activity. In this study, we…

材料科学 · 物理学 2024-04-16 Abhishek Sebastian , Pragna R

Piezoelectricity appears in the inversion asymmetric crystal that converts mechanical deformational force to electricity. Two-dimensional transition metal dichalcolgenide (TMDC) monolayers exhibit the piezoelectric effect due to the…

应用物理 · 物理学 2019-12-13 Sheng Yu , Quinton Rice , Tikaram Neupane , Bagher Tabibi , Felix Jaetae Seo

Atomically thin semiconductors have versatile future applications in the information and communication technologies for the ultimate miniaturization of electronic components. In particular, the ongoing research demands not only a…

Transition-metal complexes (TMCs) are promising photosensitizers for Type~I photodynamic therapy (PDT), where electron-transfer processes can generate reactive oxygen species under hypoxic conditions. Yet identifying candidates with the…

In recent years, single-atom catalysts attracted lots of attention because of their high catalytic activity, selectivity, stability, maximum atom utilization, exceptional performance, and low cost. Single-atom catalyst contains isolated…

材料科学 · 物理学 2021-04-16 Deepak Kumar Rai

Inspired by the synthesis of the high-pressure Fm-3m LaH10 superconducting superhydride, systematic density functional theory (DFT) calculations are performed to study ternaries that could be derived from it by replacing two of the hydrogen…

超导电性 · 物理学 2024-01-02 Nisha Geng , Katerina P. Hilleke , Francesco Belli , Pratik Kumar Das , Eva Zurek

Compressed hydrides are promising candidates for high-temperature superconductivity, yet achieving simultaneous structural stability and high-Tc at low pressures remains challenging. Here, we introduce a new mechanism for accomplishing this…

超导电性 · 物理学 2026-02-17 Wendi Zhao , Shumin Guo , Chengda Li , Abhiyan Pandit , Tian Cui , Defang Duan , Maosheng Miao

Moir\'e superlattices formed in two-dimensional semiconductor heterobilayers provide a new realization of Hubbard model physics in which the number of electrons per effective atom can be tuned at will. We report on an exact diagonalization…

强关联电子 · 物理学 2021-08-10 Nicolás Morales-Durán , Pawel Potasz , Allan H. MacDonald

Synthesis of ammonia through photo- and electrocatalysis is a rapidly growing field. Titania-based catalysts are widely reported for photocatalytic ammonia synthesis and have also been suggested as electrocatalysts. The addition of…

Single-enzyme catalysis offers a promising approach for unravelling the dynamic behaviour of individual enzymes as they undergo a reaction, revealing the complex heterogeneity that is lost in the averaged ensembles. Here we demonstrate…

Kinetic of a reversible structural transition between insulating (2H) and metallic (1T') phases in a monolayer MoTe2 due to an electrostatic doping is studied using first-principle calculations. The driving force for the structural…

材料科学 · 物理学 2018-06-20 O. Rubel

We introduce a new approach for the correlation energy of one- and two-valley two-dimensional electron gas (2DEG) systems. Our approach is based on a random phase approximation at high densities and a classical approach at low densities,…

强关联电子 · 物理学 2017-04-05 M. Zarenia , D. Neilson , B. Partoens , F. M. Peeters

The crystallization of charge carriers, dubbed the Wigner crystal, is anticipated at low densities in clean two-dimensional electronic systems (2DES). While there has been extensive investigation across diverse platforms, probing…

Zn-air battery (ZAB) has distinguished itself as new generation of energy storage device due to the high theoretical energy density and its performance relies on the oxygen reduction reaction (ORR) performance of the cathode catalysts.…

应用物理 · 物理学 2020-12-21 Kwun Nam Hui

We study the nature of spin excitations of individual transition metal atoms (Ti, V, Cr, Mn, Fe, Co and Ni) deposited on a Cu$_2$N/Cu(100) surface using both spin-polarized density functional theory (DFT) and exact diagonalization of an…

介观与纳米尺度物理 · 物理学 2016-08-08 Alejandro Ferrón , Jose Luis Lado , Joaquín Fernández-Rossier

An effective electronic Hamiltonian for transition metal oxide compounds is presented. For Mn-oxides, the Hamiltonian contains spin-2 ``spins'' and spin-3/2 ``holes'' as degrees of freedom. The model is constructed from the Kondo-lattice…

凝聚态物理 · 物理学 2009-10-28 Erwin Müller-Hartmann , Elbio Dagotto

A new model for the intermediate compound of the hydrogen evolution reaction (HER) is proposed, for the electrochemical reduction of hydrogen in the presence of bisulfate on platinum(111). The formation of this compound, a regular 2…

化学物理 · 物理学 2007-05-23 L. Blum , Dale A. Huckaby

We investigated metal-insulator transitions for double layer two-dimensional electron hole systems in transition metal dicalcogenides (TMDC) stacked on opposite sides of thin layers of boron nitride (BN). The interparticle interaction is…

介观与纳米尺度物理 · 物理学 2021-12-08 S. T. Chui , Ning Wang , B. Tanatar

Evolutionary structure searches are used to predict stable phases with unique stoichiometries in the hydrogen-rich region of the magnesium/hydrogen phase diagram under pressure. MgH$_4$, MgH$_{12}$ and MgH$_{16}$ are found to be…

材料科学 · 物理学 2015-06-12 David C. Lonie , James Hooper , Bahadir Altintas , Eva Zurek
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