Thin Film Skyrmionics

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Takaaki Dohi ◽  
Robert. M. Reeve ◽  
Mathias Kläui
Keyword(s):  
Thin Film ◽  
Room Temperature ◽  
Condensed Matter ◽  
Annual Review ◽  
Publication Date ◽  
Condensed Matter Physics ◽  
Proof Of Concept ◽  
Fundamental Physics ◽  
New Directions ◽  
Magnetic Skyrmions

In condensed matter physics, magnetic skyrmions, topologically stabilized magnetic solitons, have been discovered in various materials systems, which has intrigued the community in terms of not only fundamental physics but also with respect to engineering applications. In particular, skyrmions in thin films are easily manipulable by electrical means even at room temperature. Concomitantly, a variety of possible applications have been proposed and proof-of-concept devices have been demonstrated. Recently, the field of skyrmion-based electronics has been referred to as skyrmionics and this field has been rapidly growing and extended in multiple directions. This review provides recent progress for skyrmion research in thin film systems and we discuss promising new directions, which will further invigorate the field. Expected final online publication date for the Annual Review of Condensed Matter Physics, Volume 13 is March 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

scholarly journals Have I Really Been a Condensed Matter Theorist? I’m Not Sure, but Does It Matter?

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Edouard Brézin
Keyword(s):  
Field Theory ◽  
Online Publication ◽  
Statistical Physics ◽  
Condensed Matter ◽  
Annual Review ◽  
Publication Date ◽  
Condensed Matter Physics

My life as a physicist has been a blend of field theory, statistical physics, and condensed matter physics over half a century. Expected final online publication date for the Annual Review of Condensed Matter Physics, Volume 12 is March 10, 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

scholarly journals A Career in Physics

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Bertrand I. Halperin
Keyword(s):  
Quantum Physics ◽  
Condensed Matter ◽  
Quantum Hall ◽  
Quantum Systems ◽  
Annual Review ◽  
Publication Date ◽  
Condensed Matter Physics ◽  
Dynamic Critical Phenomena ◽  
One Dimensional ◽  
Hall Effects

Over the course of my career, I have had the opportunity to work on a wide variety of problems in condensed matter physics, benefiting from superb collaborators and environments full of inspiring colleagues. I review here some highlights of my journey so far. Subjects include theories of dynamic critical phenomena, phase transitions in two-dimensional systems, systems with strong disorder, quantum physics of mesoscopic systems, one-dimensional quantum systems, and the quantum Hall effects. Expected final online publication date for the Annual Review of Condensed Matter Physics, Volume 12 is March 10, 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

Modeling of Ferroelectric Oxide Perovskites: From First to Second Principles

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Philippe Ghosez ◽  
Javier Junquera
Keyword(s):  
Condensed Matter ◽  
Annual Review ◽  
Publication Date ◽  
Modern Theory ◽  
Small Community ◽  
Energy Derivatives ◽  
The Past ◽  
Fundamental Understanding ◽  
Work Done ◽  
Ferroelectric Perovskite

Taking a historical perspective, we provide a brief overview of the first-principles modeling of ferroelectric perovskite oxides over the past 30 years. We emphasize how the work done by a relatively small community on the fundamental understanding of ferroelectricity and related phenomena has been at the origin of consecutive theoretical breakthroughs, with an impact going often well beyond the limit of the ferroelectric community. In this context, we first review key theoretical advances such as the modern theory of polarization, the computation of functional properties as energy derivatives, the explicit treatment of finite fields, or the advent of second-principles methods to extend the length and timescale of the simulations. We then discuss how these have revolutionized our understanding of ferroelectricity and related phenomena in this technologically important class of compounds. Expected final online publication date for the Annual Review of Condensed Matter Physics, Volume 13 is March 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

New Directions in the Study of Institutional Logics: From Tools to Phenomena

2021 ◽  
Vol 47 (1) ◽  
Author(s):  
Michael Lounsbury ◽  
Christopher W.J. Steele ◽  
Milo Shaoqing Wang ◽  
Madeline Toubiana
Keyword(s):  
Recent Work ◽  
Online Publication ◽  
Institutional Logics ◽  
Annual Review ◽  
Publication Date ◽  
Complex Dynamic ◽  
New Directions ◽  
Analytical Tools ◽  
Dynamic Phenomena

In this article, we take stock of the institutional logics perspective and highlight opportunities for new scholarship. While we celebrate the growth and generativity of the literature on institutional logics, we also note that there has been a troubling tendency in recent work to use logics as analytical tools, feeding disquiet about reification and reductionism. Seeding a broader scholarly agenda that addresses such weaknesses in the literature, we highlight nascent efforts that aim to more systematically understand institutional logics as complex, dynamic phenomena in their own right. In doing so, we argue for more research that probes how logics cohere and endure by unpacking the role of values, the centrality of practice, and the governance dynamics of institutional logics and their orders. Furthermore, we encourage bridging the study of institutional logics with various literatures, including ethnomethodology, phenomenology, professions, elites, world society, and the old institutionalism, to enhance progress in these directions. Expected final online publication date for the Annual Review of Sociology, Volume 47 is July 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

Biological Phase Separation and Biomolecular Condensates in Plants

2021 ◽  
Vol 72 (1) ◽  
Author(s):  
Ryan J. Emenecker ◽  
Alex S. Holehouse ◽  
Lucia C. Strader
Keyword(s):  
Phase Separation ◽  
Cell Biology ◽  
Condensed Matter ◽  
Annual Review ◽  
Publication Date ◽  
Nuclear Speckles ◽  
The Past ◽  
Shared Property ◽  
And Function ◽  
Physical Principles

A surge in research focused on understanding the physical principles governing the formation, properties, and function of membraneless compartments has occurred over the past decade. Compartments such as the nucleolus, stress granules, and nuclear speckles have been designated as biomolecular condensates to describe their shared property of spatially concentrating biomolecules. Although this research has historically been carried out in animal and fungal systems, recent work has begun to explore whether these same principles are relevant in plants. Effectively understanding and studying biomolecular condensates require interdisciplinary expertise that spans cell biology, biochemistry, and condensed matter physics and biophysics. As such, some involved concepts may be unfamiliar to any given individual. This review focuses on introducing concepts essential to the study of biomolecular condensates and phase separation for biologists seeking to carry out research in this area and further examines aspects of biomolecular condensates that are relevant to plant systems. Expected final online publication date for the Annual Review of Plant Biology, Volume 72 is May 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

Constructed Languages

2021 ◽  
Vol 50 (1) ◽  
Author(s):  
Christine Schreyer
Keyword(s):  
Community Of Practice ◽  
Real World ◽  
Annual Review ◽  
Endangered Languages ◽  
Publication Date ◽  
Speech Community ◽  
New Directions ◽  
University Classrooms ◽  
The Relationship

Constructed languages, also known as conlangs, are languages that have been purposefully created for either real-world or fictional speakers. Within this article, I provide a summary of the language creation process and how the community of conlangers, people who make languages, come to know each other's work, as well as how language creation assignments are being adopted within university classrooms. I also explore the role of the language creator in bringing a community of speakers into existence through the invention of a language. I discuss whether speakers of a constructed language are part of a community of practice or a speech community and the implications for this distinction within anthropology. I also describe conscripts, or constructed orthographies, as well as the relationship between endangered languages and constructed languages, how invented worlds can create real-world shifts in worldview, and suggestions for new directions in research linking anthropology and constructed languages. Expected final online publication date for the Annual Review of Anthropology, Volume 50 is October 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

scholarly journals Topological Magnons: A Review

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Paul A. McClarty
Keyword(s):  
Condensed Matter ◽  
Annual Review ◽  
Publication Date ◽  
Magnetic Excitations ◽  
The Past ◽  
Topological Materials ◽  
And Topology ◽  
Magnetic Couplings ◽  
Berry Phases ◽  
Topological Matter

At sufficiently low temperatures, magnetic materials often enter correlated phases hosting collective, coherent magnetic excitations such as magnons or triplons. Drawing on the enormous progress on topological materials of the past few years, recent research has led to new insights into the geometry and topology of these magnetic excitations. Berry phases associated with magnetic dynamics can lead to observable consequences in heat and spin transport, whereas analogs of topological insulators and semimetals can arise within magnon band structures from natural magnetic couplings. Magnetic excitations offer a platform to explore the interplay of magnetic symmetries and topology, to drive topological transitions using magnetic fields; examine the effects of interactions on topological bands; and generate topologically protected spin currents at interfaces. In this review, we survey progress on all these topics, highlighting aspects of topological matter that are unique to magnon systems and the avenues yet to be fully investigated. Expected final online publication date for the Annual Review of Condensed Matter Physics, Volume 13 is March 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

Ideal diamagnetic response at room temperature by graphene-n-heptane-permalloy system

2020 ◽  
Vol 34 (36) ◽  
pp. 2050415
Author(s):  
Yasushi Kawashima ◽  
Rajendra Dulal ◽  
Serafim Teknowijoyo ◽  
Sara Chahid ◽  
Armen Gulian
Keyword(s):  
Magnetic Fields ◽  
Graphene Layer ◽  
Room Temperature ◽  
Condensed Matter ◽  
Condensed Matter Physics ◽  
Diamagnetic Response ◽  
Quantum Phenomenon ◽  
The Moment ◽  
Three Components

Perfect screening of sub-milligauss magnetic fields (ideal diamagnetism) by a system comprised of a graphene and thin permalloy foil parallel to the graphene layer immersed in [Formula: see text]-heptane is observed at room temperature. The presence of all three components is necessary for the effect to occur. Ideal diamagnetic response appears at the moment of [Formula: see text]-heptane injection and disappears when the liquid evaporates. Until then, no change of diamagnetic moment occurs at further variation of the field. The observed ideal diamagnetic feature is either a footprint of a novel type of superconductivity at room temperature or a yet unknown quantum phenomenon in condensed matter physics.

Developmental Cognitive Neuroscience in the Era of Networks and Big Data: Strengths, Weaknesses, Opportunities, and Threats

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Damien A. Fair ◽  
Nico U.F. Dosenbach ◽  
Amy H. Moore ◽  
Theodore Satterthwaite ◽  
Michael P. Milham
Keyword(s):  
Big Data ◽  
Cognitive Neuroscience ◽  
Developmental Psychology ◽  
Annual Review ◽  
Publication Date ◽  
Functional Magnetic Resonance ◽  
Brain Functions ◽  
New Directions ◽  
Functional Connectivity Mri ◽  
Developmental Cognitive Neuroscience

Developmental cognitive neuroscience is being pulled in new directions by network science and big data. Brain imaging [e.g., functional magnetic resonance imaging (fMRI), functional connectivity MRI], analytical advances (e.g., graph theory, machine learning), and access to large computing resources have empowered us to collect and process neurobehavioral data faster and in larger populations than ever before. The translational potential from these advances is unparalleled, as a better understanding of complex human brain functions is best grounded in the onset of these functions during human development. However, the maturation of developmental cognitive neuroscience has seen the emergence of new challenges and pitfalls, which have significantly slowed progress and need to be overcome to maintain momentum. In this review, we examine the state of developmental cognitive neuroscience in the era of networks and big data. In addition, we provide a discussion of the strengths, weaknesses, opportunities, and threats (SWOT) of the field to advance developmental cognitive neuroscience's scientific and translational potential. Expected final online publication date for the Annual Review of Developmental Psychology, Volume 3 is December 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

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