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Recent advancements in spintronics have opened a new avenue in terahertz (THz) radiation sources that may outperform the traditional contact-based metallic counterparts. Inspired by the generation of broadband spintronic THz signals at the…

Mesoscale and Nanoscale Physics · Physics 2025-04-25 Abbas Ghaffari , Malek Abdelsamei , Puja Thapa , Seiji Mita , Ramón Collazo , Kenan Gundogdu , Dali Sun , Qing Gu

Layered ternary transition-metal chalcogenides have been focused as a vein of exploration for superconductors. In this study, TiGeTe$_{6}$ single crystals were synthesized and characterized by structural and valence state analyses and…

We examine the electronic structure of recently fabricated in-plane heterojunctions of zigzag graphene nanoribbons embedded in hexagonal boron nitride. We focus on hitherto unexplored interface configurations in which both edges of the…

Mesoscale and Nanoscale Physics · Physics 2024-06-03 Michele Pizzochero , Nikita V. Tepliakov , Johannes Lischner , Arash A. Mostofi , Efthimios Kaxiras

The photo-driven process of singlet fission generates coupled triplet pairs (TT) with fundamentally intriguing and potentially useful properties. The quintet 5TT0 sublevel is particularly interesting for quantum information because it is…

Quasiparticle excitations of free electrons in condensed-matter physics, characterized by the dimensionality of the band crossing, can find their elementary-particle analogs in high-energy physics, such as Majorana, Weyl, and Dirac…

Materials Science · Physics 2018-01-03 Yunyouyou Xia , Gang Li

Equilateral triangle-shaped graphene nanoislands with a lateral dimension of $n$ benzene rings are known as $[n]$triangulenes. Individual $[n]$triangulenes are open-shell molecules, with single-particle electronic spectra that host $n-1$…

Mesoscale and Nanoscale Physics · Physics 2023-09-13 R. Ortiz , G. Catarina , J. Fernández-Rossier

We propose a new class of semiconducting graphene-based nanostructures: hydrogenated graphene nanoripples (HGNRs), based on continuum-mechanics analysis and first principles calculations. They are formed via a two-step combinatorial…

Mesoscale and Nanoscale Physics · Physics 2015-05-20 Z. F. Wang , Yu Zhang , Feng Liu

We show that ordered monolayers of organic molecules stabilized by hydrogen bonding on the surface of exfoliated few-layer hexagonal boron nitride (hBN) flakes may be incorporated into van der Waals heterostructures with integral few-layer…

Coordination chemistry relies on harnessing active metal sites within organic matrices. Polynuclear complexes - consisting of organic ligands binding to clusters of several metal atoms are of particular interest, owing to their…

Mesoscale and Nanoscale Physics · Physics 2018-09-05 Cornelius Krull , Marina Castelli , Prokop Hapala , Dhaneesh Kumar , Pavel Jelinek , Agustin Schiffrin

We report the colloidal synthesis of 2D SnTe nanosheets through precursor hot-injection in a nonpolar solvent. During the reaction, an important intermediate - Sn-template - is formed which defines the confined growth of SnTe. This…

Starphenes are attractive compounds due to their characteristic physicochemical properties that are inherited from acenes, making them interesting compounds for organic electronics and optics. However, the instability and low solubility of…

Inelastic neutron scattering (INS) experiments under applied magnetic field at low temperatures show detailed low lying magnetic excitations in the so called tridiminshed iron icosahedron magnetic molecule. The magnetic molecule consists of…

Strongly Correlated Electrons · Physics 2014-06-05 David Vaknin , Franz Demmel

We describe a defect in pentacene single crystals that is created by bias stress and persists at room temperature for an hour in the dark but only seconds with 420nm illumination. The defect gives rise to a hole trap at Ev + 0.38eV and…

Materials Science · Physics 2009-11-10 D. V. Lang , X. Chi , A. M. Sergent , A. P. Ramirez

Graphene can develop large magnetic moments in custom crafted open-shell nanostructures such as triangulene, a triangular piece of graphene with zigzag edges. Current methods of engineering graphene nano-systems on surfaces succeeded in…

Heterobilayers formed by stacking two-dimensional atomic crystals are particularly promising for low-dimensional semiconductor optics, as they host interlayer excitons, bound states of electrons and holes residing in different layers. They…

Mesoscale and Nanoscale Physics · Physics 2025-07-31 Suvadip Masanta , Chumki Nayak , Premananda Chatterjee , Atindra Nath Pal , Indrani Bose , Achintya Singha

The stability of trionic excitations in zigzag carbon nanotubes has been estimated. A trion is shown to be unstable with respect to the ground excitonic state and stable with respect to the excited one. So, trions in nanotubes of this type…

Mesoscale and Nanoscale Physics · Physics 2012-11-27 Sergey Marchenko

Nano-polycrystalline diamond (NPD) and nanotwinned diamond (NtD) were successfully synthesized in multi-anvil high pressure apparatus at high pressure and high temperature (HPHT) conditions using precursors of onion carbons. We found that…

Materials Science · Physics 2017-02-28 Qiang Tao , Xin Wei , Min Lian , Hongliang Wang , Xin Wang , Shushan Dong , Tian Cui , Pinwen Zhu

Neutrino trident scattering is a rare Standard Model process where a charged-lepton pair is produced in neutrino-nucleus scattering. To date, only the dimuon final-state has been observed, with around 100 total events, while the other…

High Energy Physics - Phenomenology · Physics 2019-02-20 Peter Ballett , Matheus Hostert , Silvia Pascoli , Yuber F. Perez-Gonzalez , Zahra Tabrizi , Renata Zukanovich Funchal

Assuming neutrinos to be of the Dirac type, the little group generators for the one-particle states, created off the vacuum by the field operator, are obtained, both in terms of the one-particle states themselves and in terms of…

High Energy Physics - Phenomenology · Physics 2021-01-11 R. Romero

The role of charged centers in radiation-induced phenomena occurring in solid nitrogen irradiated with an electron beam was studied. The experiments were performed employing luminescence method and activation spectroscopy techniques -…