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Quantum Matter with Topological Properties
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Quantum Matter with Topological Properties

A special issue of J (ISSN 2571-8800). This special issue belongs to the section "Physical Sciences".

Deadline for manuscript submissions: closed (15 November 2022) | Viewed by 11661

Special Issue Editors

Dr. Neel Haldolaarachchige

E-Mail Website
Guest Editor
Department of Physical Science, Bergen Community College, Paramus, NJ 07652, USA
Interests: condensed matter physics; material science; quantum matter simulation; density functional theory; physical properties of matter; physics education; computational thinking of physics
Dr. Mojammel Alam Khan

E-Mail Website
Guest Editor
Department of Physics and Department of Chemistry, Johns Hopkins University, Baltimore, MD, USA
Interests: condensed matter physics; superconductivity; magnetism; high magnetic field; neutron scattering; topological materials

Special Issue Information

Dear Colleagues,

Materials with quantum phases are generally called quantum materials (QMs), a driving force of most of the advanced technological developments. QMs have a broad effect on everyday electronics to quantum computing. QMs are fundamentally changing the electronic applications at present and paving the way to developing new electronic applications in the future. The electronic structure of QMs with topological properties (TP) is rich, with some very interesting features, such as gap-less surface states in topological insulators (TI) and Dirac electrons in topological semimetals (SM). Both TI and SM show correlations between crystal symmetry and the electronic structures of materials. QMs with TP may provide a materials playground to investigate some of the fascinating physical phenomena, such as Majorana fermions and topological superconductivity. QMs with TP will shape the future of material science and engineering, offering a fundamental understanding for the development of new applications. 

This Special Issue aims to promote original and high-quality papers on the impact of QMs with TP from a multidisciplinary perspective. In particular, the Guest Editors seek papers on experimental, computational, and theoretical investigations of QMs with TP. The issue especially invites new reviews and developments on topological materials. The Special Issue also welcomes experimental investigations on topological features of existing or new materials, electronic structure simulations to search for new topological materials, and theoretical developments on topological quantum phases.

We cordially invite you to submit a high-quality original research paper or review to this Special Issue, “Quantum Matter with Topological Properties”.

Dr. Neel Haldolaarachchige
Dr. Mojammel Alam Khan
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 can be submitted until the deadline. All papers will be 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. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). 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. J is an international peer-reviewed open access quarterly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. 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

  • quantum materials
  • topological materials
  • dirac semimetals
  • topological insulators
  • density functional theory
  • quantum simulations
  • electronic structure
  • physical properties
  • topological magnetic materials
  • topological superconductivity

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Published Papers (3 papers)

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Research

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12 pages, 912 KiB  
Article
First Principles Computation of New Topological B2X2Zn (X = Ir, Rh, Co) Compounds
by Jack Howard, Alexander Rodriguez, Neel Haldolaarachchige and Kalani Hettiarachchilage
J 2023, 6(1), 152-163; https://doi.org/10.3390/j6010011 - 28 Feb 2023
Viewed by 2288
Abstract
Recent attempts at searching for new materials have revealed a large class of materials that show topological behaviors with unusual physical properties and potential applications leading to enthralling discoveries both theoretically and experimentally. We computationally predict new three-dimensional topological compounds of space group [...] Read more.
Recent attempts at searching for new materials have revealed a large class of materials that show topological behaviors with unusual physical properties and potential applications leading to enthralling discoveries both theoretically and experimentally. We computationally predict new three-dimensional topological compounds of space group 139(I/4mmm). After conducting a full volume optimization process by allowing the rearrangement of atomic positions and lattice parameters, the first-principles calculation with a generalized gradient approximation is utilized to identify multiple Dirac-type crossings around X and P symmetric points near Fermi energy. Importantly, the band inversion at point P is recognized. Further, we investigate the compound for topological crystalline insulating behavior by conducting surface state calculation and by investigating gapping behavior by increasing lattice parameters. Additionally, we perform formation energy, elastic properties, and phonon modes calculations to verify the structural, mechanical, and dynamical stability of the compounds. Therefore, we suggest compounds for further investigation and experimental realization. Full article
(This article belongs to the Special Issue Quantum Matter with Topological Properties)
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12 pages, 647 KiB  
Article
Computational Prediction of New Series of Topological Ternary Compounds LaXS (X = Si, Ge, Sn) from First-Principles
by Jack Howard, Joshua Steier, Neel Haldolaarachchige and Kalani Hettiarachchilage
J 2021, 4(4), 577-588; https://doi.org/10.3390/j4040042 - 30 Sep 2021
Viewed by 2941
Abstract
Dirac materials and their advanced physical properties are one of the most active fields of topological matter. In this paper, we present an ab initio study of electronics properties of newly designed LaXS (X = Si, Ge, Sn) tetragonal structured [...] Read more.
Dirac materials and their advanced physical properties are one of the most active fields of topological matter. In this paper, we present an ab initio study of electronics properties of newly designed LaXS (X = Si, Ge, Sn) tetragonal structured ternaries, with the absence and presence of spin–orbit coupling. We design the LaXS tetragonal non-symophic p4/nmm space group (no. 129) structures and identify their optimization lattice parameters. The electronic band structures display several Dirac crossings with the coexistence of both type I and type II Dirac points identified by considering the effect of spin–orbit coupling toward the linear crossing. Additionally, we perform the formation energy calculation through the density functional theory (DFT) to predict the stability of the structures and the elastic constants calculations to verify the Born mechanical stability criteria of the compounds. Full article
(This article belongs to the Special Issue Quantum Matter with Topological Properties)
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Review

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23 pages, 633 KiB  
Review
Quantum Matter Overview
by Melanie Swan, Renato P. Dos Santos and Frank Witte
J 2022, 5(2), 232-254; https://doi.org/10.3390/j5020017 - 20 Apr 2022
Cited by 1 | Viewed by 5373
Abstract
Quantum matter (novel phases of matter at zero temperature with exotic properties) is a growing field with applications in its own domain, and in providing foundational support to quantum sciences fields more generally. The ability to characterize and manipulate matter at the smallest [...] Read more.
Quantum matter (novel phases of matter at zero temperature with exotic properties) is a growing field with applications in its own domain, and in providing foundational support to quantum sciences fields more generally. The ability to characterize and manipulate matter at the smallest scales continues to advance in fundamental ways. This review provides a plain-language, non-technical description of contemporary activity in quantum matter for a general science audience, and an example of these methods applied to quantum neuroscience. Quantum matter is the study of topologically governed phases of matter at absolute zero temperature that exhibit new kinds of emergent order and exotic properties related to topology and symmetry, entanglement, and electronic charge and magnetism, which may be orchestrated to create new classes of materials and computational devices (including in the areas of spintronics, valleytronics, and quantum computing). The paper is organized to discuss recent developments in quantum matter on the topics of short-range topologically protected materials (namely, topological semimetals), long-range entangled materials (quantum spin liquids and fractional quantum Hall states), and codes for characterizing and controlling quantum systems. A key finding is that a shift in the conceptualization of the field of quantum matter may be underway to expand the core focus on short-range topologically protected materials to also include geometry-based approaches and long-range entanglement as additionally important tools for the understanding, characterization, and manipulation of topological materials. Full article
(This article belongs to the Special Issue Quantum Matter with Topological Properties)
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