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The 15th Anniversary of Materials—Recent Advances in Quantum Materials

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Quantum Materials".

Deadline for manuscript submissions: 30 April 2024 | Viewed by 1580

Special Issue Editors


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Guest Editor
Director of Research, Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, 100 Nikolaou Plastira Str., Vassilika Vouton, 70013 Heraklion, Greece
Interests: interacting charge carriers and magnetic/electric moments; nanoscale structure-function correlations; frustration; superconductivity; intercalation materials; hybrid nanocrystals; neutron and synchrotron X-ray scattering

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Guest Editor
Associate Professor, Department of Materials Science and Technology, University of Crete, Voutes, 70013 Heraklion, Greece
Interests: materials modeling; atomistic simulations; first-principles calculations; electronic structure; quantum materials; 2D materials; nanostructures; catalysis; nonlinearity; disorder
Condensed Matter Physics and Materials Science Division, Brookhaven National Laboratory, Upton, NY 11973, USA
Interests: complexity in quantum and functional materials; colossal responses; emerging phenomena; disorder in charge/ orbital/ magnetic sectors; local atomic structure; short range order; nanoscale structure-property relationship; X-ray scattering; neutron scattering

Special Issue Information

Dear Colleagues,

Launched in 2008, Materials has provided readers with high-quality content edited by active researchers in materials science for 15 years by sustainable, open-access and outstanding editorial service. Today, the published papers receive more than 1,500,000 views per month, with readers in more than 150 countries and regions.

Here, a Special Issue entitled “Recent Advances in Quantum Materials” is being opened in order to celebrate the 15th anniversary of the journal.

Quantum materials resort on carriers (photons, electrons) of physical interactions and principles of quantum mechanics to transform diverse sectors, from sensing and telecommunications to healthcare and energy technologies, to name a few. This Special Issue invites basic and applied research contributions on emerging phenomena, arising from the coherent coupling of light and topological matter or the correlated interaction of fundamental degrees of freedom (charge, spin, orbital) and the lattice, all requiring the development of quantum mechanical models to describe their unique behaviours. 

Realisations span from nanoscale to bulk material classes, including but not limited to complex magnets (spin liquids/ices/glasses), superconductors, and multiferroics that are further expanded to embrace fascinating topological insulators, van der Waals semiconductors, as well as Dirac and Weyl semimetals, where the extraordinary effects of quantum mechanical interactions at the atomic scale lead to exotic physical properties.

Original research works are invited on theoretical predictions (ab initio calculations, DFT atomistic modelling) that accelerate the discovery of remarkable quantum materials, capable of supporting experimental approaches, elaborating on synthesis aspects (bottom-up and top-down growth), while explaining how structure and dynamics (e.g., neutron and synchrotron X-ray scattering, spectroscopy at ultrafast time-scales, solid-state NMR etc.) at the atomic level respond to external perturbations (e.g., light, magnetic, electrical stimuli). Ultimately, proof-of-principle works are welcomed that exploit the findings in potentially new types of quantum-enabled, electronic and photonic devices not feasible with conventional materials.

Submissions of the most forward-looking research would highlight the level of complexity in the field, conveying the requirements for sophisticated, powerful tools and methods necessary not only to design and grow, but also to understand and manipulate quantum-scale materials.

Dr. Alexandros Lappas
Dr. George Kopidakis
Dr. Emil Bozin
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts of research articles can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere. All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2300 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • 2D materials
  • low-dimensional metal oxides
  • transition metal dichalcogenides
  • Kagome lattices
  • chiral crystals
  • perovskites
  • unconventional superconductors
  • geometrical frustration
  • topological states
  • fluctuations in quantum matter
  • spintronics
  • photonic nanostructures
  • quantum dots

Published Papers (2 papers)

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Research

11 pages, 2361 KiB  
Article
Ab Initio Density Functional Theory Calculation: Americium Hydrolysis Mechanism
by Na Shan and Tao Gao
Materials 2024, 17(3), 572; https://0-doi-org.brum.beds.ac.uk/10.3390/ma17030572 - 25 Jan 2024
Viewed by 447
Abstract
The hydrolysis mechanism of americium was calculated using density functional theory, and the detailed microscopic reaction mechanism was obtained. The results show that americium reacts with water along the octet state to produce oxides and H2, and that this reaction is [...] Read more.
The hydrolysis mechanism of americium was calculated using density functional theory, and the detailed microscopic reaction mechanism was obtained. The results show that americium reacts with water along the octet state to produce oxides and H2, and that this reaction is exothermic. The interaction between Am and O atoms gradually changes from initially electrostatic interaction to covalent interaction, and continues to strengthen. During the reaction process, Am atoms always lose electrons, the 5f orbital is obviously involved, and there is df orbital hybridization. This study provides the necessary theoretical data support for the theoretical and experimental study of the actinide system. Full article
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10 pages, 1912 KiB  
Article
Enhanced Performance of Inverted Perovskite Quantum Dot Light-Emitting Diode Using Electron Suppression Layer and Surface Morphology Control
by Hee Jung Kwak, Collins Kiguye, Minsik Gong, Jun Hong Park, Gi-Hwan Kim and Jun Young Kim
Materials 2023, 16(22), 7171; https://0-doi-org.brum.beds.ac.uk/10.3390/ma16227171 - 15 Nov 2023
Cited by 1 | Viewed by 860
Abstract
The energy level offset at inorganic layer–organic layer interfaces and the mismatch of hole/electron mobilities of the individual layers greatly limit the establishment of balanced charge carrier injection inside the emissive layer of halide perovskite light-emitting diodes (PeQLEDs). In contrast with other types [...] Read more.
The energy level offset at inorganic layer–organic layer interfaces and the mismatch of hole/electron mobilities of the individual layers greatly limit the establishment of balanced charge carrier injection inside the emissive layer of halide perovskite light-emitting diodes (PeQLEDs). In contrast with other types of light-emitting devices, namely OLEDs and QLEDs, various techniques such as inserting an electron suppression layer between the emissive and electron transport layer have been employed as a means of establishing charge carrier injection into their respective emissive layers. Hence, in this study, we report the use of a thin layer of Poly(4-vinylpyridine) (PVPy) (an electron suppression material) placed between the emissive and electron transport layer of a halide PeQLEDs fabricated with an inverted configuration. With ZnO as the electron transport material, devices fabricated with a thin PVPy interlayer between the ZnO ETL and CsPbBr3 -based green QDs emissive layer yielded a 4.5-fold increase in the maximum observed luminance and about a 10-fold increase in external quantum efficiency (EQE) when compared to ones fabricated without PVPy. Furthermore, the concentration and coating process conditions of CsPbBr3 QDs were altered to produce various thicknesses and film properties which resulted in improved EQE values for devices fabricated with QDs thin films of lower surface root-mean-square (RMS) values. These results show that inhibiting the excessive injection of electrons and adjusting QDs layer thickness in perovskite-inverted QLEDs is an effective way to improve device luminescence and efficiency, thereby improving the carrier injection balance. Full article
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