Výsledky vyhledávání - "F321 Solid state Physics"

The influence of magnetic vortices motion on the inverse ac Josephson effect in asymmetric arrays

Autor: Boris Chesca, Marat Gaifullin, Daniel John, Jonathan Cox, Sergey Savel'ev, Christopher Mellor

We report on the influence a preferential magnetic vortices motion has on the magnitude of the inverse ac Josephson effect (the appearance of dc current Shapiro steps) and the coherent operation of asymmetrical parallel arrays of YBaCuO Josephson jun

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a4816e42739069fd8ccfad8bfcbe82de
http://arxiv.org/abs/2209.08998

Zobrazit plný text záznamu

Excited-State Properties for Extended Systems: Efficient Hybrid Density Functional Methods

Autor: Anna-Sophia Hehn, Beliz Sertcan, Fabian Belleflamme, Sergey K. Chulkov, Matthew B. Watkins, Jürg Hutter

Time-dependent density functional theory has become state-of-the-art for describing photophysical and photochemical processes in extended materials due to its affordable cost. The inclusion of exact exchange was shown to be essential for the correct

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::841828da9001afac060f836421603298
https://www.zora.uzh.ch/id/eprint/221137/

Zobrazit plný text záznamu

The Presence of Charge Transfer Defect Complexes in Intermediate Band CuAl1−pFepS2

Autor: Adam Kinsella, Matthew Booth, Matthew Watkins, Christopher Dickens

Publikováno v: Crystals; Volume 12; Issue 12; Pages: 1823

Despite chalcopyrite (CuFeS2) being one of the oldest known copper ores, it exhibits various properties that are still the subject of debate. For example, the relative concentrations of the ionic states of Fe and Cu in CuFeS2 can vary significantly b

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c7bda0fd512dc392e00f5672999b8579
https://doi.org/10.3390/cryst12121823

Zobrazit plný text záznamu

Ab initio electron-phonon interactions in correlated electron systems

Autor: Iurii Timrov, Andrea Floris, Nicola Marzari, Jinsoo Park, Matteo Cococcioni, Jin-Jian Zhou, Marco Bernardi

Publikováno v: Physical Review Letters

Electron-phonon ($e$-ph) interactions are pervasive in condensed matter, governing phenomena such as transport, superconductivity, charge-density waves, polarons and metal-insulator transitions. First-principles approaches enable accurate calculation

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3bb68ae5f032195cbe3fe4bf4a5c113e
http://arxiv.org/abs/2102.06840

Zobrazit plný text záznamu

Hubbard-corrected density functional perturbation theory with ultrasoft pseudopotentials

Autor: Andrea Floris, Nicola Marzari, Matteo Cococcioni, S. de Gironcoli, Iurii Timrov, Burak Himmetoglu

Publikováno v: Physical Review B 101 (2020). doi:10.1103/PhysRevB.101.064305
info:cnr-pdr/source/autori:Floris A.; Timrov I.; Himmetoglu B.; Marzari N.; De Gironcoli S.; Cococcioni M./titolo:Hubbard-corrected density functional perturbation theory with ultrasoft pseudopotentials/doi:10.1103%2FPhysRevB.101.064305/rivista:Physical Review B/anno:2020/pagina_da:/pagina_a:/intervallo_pagine:/volume:101

We present in full detail a newly developed formalism enabling density functional perturbation theory (DFPT) calculations from a DFT+$U$ ground state. The implementation includes ultrasoft pseudopotentials and is valid for both insulating and metalli

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c6a586c6e98c4767a1f66275b9231f6
http://hdl.handle.net/20.500.11767/117278

Zobrazit plný text záznamu

Preface Special Issue on novel superconducting and magnetic materials

Autor: Bernardini, Fabio, Boeri, Lilia, Floris, Andrea, Franchini, Cesare, Profeta, Gianni, Sanna, Antonio

Superconductivity and magnetism -- and their entanglement in a single material -- are among the most studied phenomena in condensed matter physics and continue to pose new challenges for fundamental research and exciting opportunities for technologic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_________5::840337380bf46529d5312bf82d80cb71
https://eprints.lincoln.ac.uk/id/eprint/37927/1/Preface__Novel_Superconducting_and_Magnetic_Materials.pdf

Zobrazit plný text záznamu

Magnetic flux quantum periodicity of the frequency of the on-chip detectable electromagnetic radiation from superconducting flux-flow-oscillators

Autor: Marat Gaifullin, Aidan Murphy, Sergey Savel'ev, Daniel John, Boris Chesca, Christopher J. Mellor, Jonathan R. Cox

Publikováno v: Applied Physics Letters. 117:142601

Superconducting flux-flow-oscillators (FFOs) based on unidirectional flow of magnetic vortices in a single-long Josephson junction (JJ) and operating at 4.2 K are key elements of sub-terahertz integrated-receivers used in radio-astronomy and atmosphe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9a66e76eadd5b415fa903ca904356de4
https://doi.org/10.1063/5.0021970

Zobrazit plný text záznamu

Micrometre-long covalent organic fibres by photoinitiated chain-growth radical polymerization on an alkali-halide surface

Autor: Michel Féron, Franck Para, Franck Bocquet, Frédéric Chérioux, Christian Loppacher, Matthew Watkins, Laurent Nony, David Z. Gao, Filippo Federici Canova

Publikováno v: Nature Chemistry
Nature Chemistry, Nature Publishing Group, 2018, 10, pp.1112-1117. ⟨10.1038/s41557-018-0120-x⟩
Nature Chemistry, Nature Publishing Group, 2018, 10, pp.6
Nature Chemistry, 2018, 10, pp.1112-1117. ⟨10.1038/s41557-018-0120-x⟩

On-surface polymerization is a promising technique to prepare organic functional nanomaterials that are challenging to synthesize in solution, but it is typically used on metal substrates, which play a catalytic role. Previous examples on insulating

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1bb96d3774f10802d42842b591627572
https://hal.archives-ouvertes.fr/hal-01894388

Zobrazit plný text záznamu

Effect of electric field on migration of defects in oxides: Vacancies and interstitials in bulk MgO

Autor: Watkins, Matthew

Dielectric layers composed of metal oxides are routinely subjected to external electric fields during the course of normal operation of electronic devices. Many phenomenological theories suggest that electric fields strongly affect the properties and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_________5::a2a8ea7121b42133760ea5a06f97fb81
https://eprints.lincoln.ac.uk/id/eprint/32946/1/PhysRevB.98.064102.pdf

Zobrazit plný text záznamu

Relation between image charge and potential alignment corrections for charged defects in periodic boundary conditions

Autor: Watkins, Matthew

Charged defects are often studied within the periodic density functional theory (DFT), but this introduces strong finite-size artifacts. In this work, we develop an electrostatic image interaction correction (IIC) method based on the direct solution

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_________5::f614af05b58755bb92402bdf8b56a040
https://eprints.lincoln.ac.uk/id/eprint/32624/1/1.5029818.pdf

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání