First Principles Approaches to Spectroscopic Properties of Complex Materials

First Principles Approaches to Spectroscopic Properties of Complex Materials
Author :
Publisher : Springer
Total Pages : 397
Release :
ISBN-10 : 9783642550683
ISBN-13 : 3642550681
Rating : 4/5 (83 Downloads)

Synopsis First Principles Approaches to Spectroscopic Properties of Complex Materials by : Cristiana Di Valentin

The series Topics in Current Chemistry presents critical reviews of the present and future trends in modern chemical research. The scope of coverage is all areas of chemical science including the interfaces with related disciplines such as biology, medicine and materials science. The goal of each thematic volume is to give the non-specialist reader, whether in academia or industry, a comprehensive insight into an area where new research is emerging which is of interest to a larger scientific audience. Each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years are presented using selected examples to illustrate the principles discussed. The coverage is not intended to be an exhaustive summary of the field or include large quantities of data, but should rather be conceptual, concentrating on the methodological thinking that will allow the non-specialist reader to understand the information presented. Contributions also offer an outlook on potential future developments in the field. Review articles for the individual volumes are invited by the volume editors. Readership: research chemists at universities or in industry, graduate students.

Dynamical Mean-Field Theory for Strongly Correlated Materials

Dynamical Mean-Field Theory for Strongly Correlated Materials
Author :
Publisher : Springer Nature
Total Pages : 393
Release :
ISBN-10 : 9783030649043
ISBN-13 : 3030649040
Rating : 4/5 (43 Downloads)

Synopsis Dynamical Mean-Field Theory for Strongly Correlated Materials by : Volodymyr Turkowski

​​This is the first book that provides a detailed summary of one of the most successful new condensed matter theories - dynamical mean-field theory (DMFT) - in both static and dynamical cases of systems of different sizes. DMFT is one of the most successful approaches to describe the physical properties of systems with strong electron-electron correlations such as bulk materials, multi-layers, surfaces, 2D materials and nanostructures in both metallic and insulating phases. Strongly correlated materials usually include partially-filled localized d- or f-orbitals, and DMFT takes into account crucial for these systems time-resolved interaction between electrons when they “meet” on one atom and occupy one of these orbitals. The First Part of the book covers the general formalism of DMFT as a many-body theory, followed by generalizations of the approach on the cases of finite systems and out-of-equilibrium regime. In the last Chapter of the First Part we discuss generalizations of the approach on the case when the non-local interactions are taken into account. The Second Part of the book covers methodologies of merging DMFT with ab initio static Density Functional Theory (DFT) and Time-Dependent DFT (TDDFT) approaches. Such combined DFT+DMFT and DMFT+TDDFT computational techniques allow one to include the effects of strong electron-electron correlations at the accurate ab initio level. These tools can be applied to complex multi-atom multi-orbital systems currently not accessible to DMFT. The book helps broad audiences of students and researchers from the theoretical and computational communities of condensed matter physics, material science, and chemistry to become familiar with this state-of-art approach and to use it for reaching a deeper understanding of the properties of strongly correlated systems and for synthesis of new technologically-important materials.

Nonequilibrium Dynamics of Collective Excitations in Quantum Materials

Nonequilibrium Dynamics of Collective Excitations in Quantum Materials
Author :
Publisher : Springer
Total Pages : 360
Release :
ISBN-10 : 9783319774985
ISBN-13 : 3319774980
Rating : 4/5 (85 Downloads)

Synopsis Nonequilibrium Dynamics of Collective Excitations in Quantum Materials by : Edoardo Baldini

This book studies the dynamics of fundamental collective excitations in quantum materials, focusing on the use of state-of-the-art ultrafast broadband optical spectroscopy. Collective behaviour in solids lies at the origin of several cooperative phenomena that can lead to profound transformations, instabilities and phase transitions. Revealing the dynamics of collective excitations is a topic of pivotal importance in contemporary condensed matter physics, as it provides information on the strength and spatial distribution of interactions and correlation. The experimental framework explored in this book relies on setting a material out-of-equilibrium by an ultrashort laser pulse and monitoring the photo-induced changes in its optical properties over a broad spectral region in the visible or deep-ultraviolet. Collective excitations (e.g. plasmons, excitons, phonons...) emerge either in the frequency domain as spectral features across the probed range, or in the time domain as coherent modes triggered by the pump pulse. Mapping the temporal evolution of these collective excitations provides access to the hierarchy of low-energy phenomena occurring in the solid during its path towards thermodynamic equilibrium. This methodology is used to investigate a number of strongly interacting and correlated materials with an increasing degree of internal complexity beyond conventional band theory.

Electronic Structure and Magnetism of Complex Materials

Electronic Structure and Magnetism of Complex Materials
Author :
Publisher : Springer Science & Business Media
Total Pages : 352
Release :
ISBN-10 : 3540433821
ISBN-13 : 9783540433828
Rating : 4/5 (21 Downloads)

Synopsis Electronic Structure and Magnetism of Complex Materials by : David J. Singh

Recent developments in electronic structure theory have led to a new understanding of magnetic materials at the microscopic level. This enables a truly first-principles approach to investigations of technologically important magnetic materials. Among the advances treated here have been practical schemes for handling non-collinear magnetic systems, including relativity, and an understanding of the origins and role of orbital magnetism within band structure formalisms. This book provides deep theoretical insight into magnetism, mahneatic materials, and magnetic systems. It covers these recent developments with review articles by some of the main originators of these developments.

Quantum Theory of Real Materials

Quantum Theory of Real Materials
Author :
Publisher : Springer Science & Business Media
Total Pages : 580
Release :
ISBN-10 : 0792396669
ISBN-13 : 9780792396666
Rating : 4/5 (69 Downloads)

Synopsis Quantum Theory of Real Materials by : James R. Chelikowsky

A Festschrift in honor of Professor Marvin L. Cohen This volume is a Festschrift in honor of Professor Marvin L. Cohen. The articles, contributed by leading researchers in condensed matter physics, high-light recent advances in the use of quantum theory to explain and predict properties of real materials. The invention of quantum mechanics in the 1920's provided detailed descriptions of the electronic structure of atoms. However, a similar understanding of solids has been achieved only in the past 30 years, owing to the complex electron-ion and electron electron interactions in these systems. Professor Cohen is a central figure in this achievement. His development of the pseudopotential and total energy methods provided an alternate route using computers for the exploration of solids and new materials even when they have not yet been synthesized. Professor Cohen's contributions to materials theory have been both fundamental and encompassing. The corpus of his work consists of over 500 papers and a textbook. His band structures for semiconductors are used worldwide by researchers in solid state physics and chemistry and by device engineers. Professor Cohen's own use of his theories has resulted in the determination of the electronic structure, optical properties, structural and vibrational properties, and superconducting properties of numerous condensed matter systems including semiconductors, metals, surfaces, interfaces, defects in solids, clusters, and novel materials such as the fullerides and nanotubes.

Spectral Methods in Food Analysis

Spectral Methods in Food Analysis
Author :
Publisher : CRC Press
Total Pages : 484
Release :
ISBN-10 : 0824702239
ISBN-13 : 9780824702236
Rating : 4/5 (39 Downloads)

Synopsis Spectral Methods in Food Analysis by : Mossoba

Outlines the basic principles, advanced instrumentation, applications and future potential of a range of spectral techniques in food analysis. The book introduces new applications of GC-MS, LC-MS, MALDI TOF-MS, GC-FTIR, SFC-FTIR, ATR, and Raman spectroscopy. The book covers the identification and quantitation of food constituents, additives and contaminants.

Spectroscopic Properties of Inorganic and Organometallic Compounds

Spectroscopic Properties of Inorganic and Organometallic Compounds
Author :
Publisher : Royal Society of Chemistry
Total Pages : 167
Release :
ISBN-10 : 9781849737791
ISBN-13 : 1849737797
Rating : 4/5 (91 Downloads)

Synopsis Spectroscopic Properties of Inorganic and Organometallic Compounds by : Jack Yarwood

Spectroscopic Properties of Inorganic and Organometallic Compounds: Techniques, Materials and Applications provides a unique source of information in an important area of chemistry. Since Volume 40 the nature and ethos of this series have been altered to reflect a change of emphasis towards 'Techniques, Materials and Applications'. Researchers will now find up-to-date critical reviews which provide in-depth analyses of the leading papers in the field, with authors commenting of the quality and value of the work in a wider context. Focus areas will include structure-function relationships, photochemistry and spectroscopy of inorganic complexes, and catalysis; materials such as ceramics, cements, pigments, glasses and corrosion products; techniques such as advanced laser spectroscopy and theoretical methods.

Chemical Functionalization of Carbon Nanomaterials

Chemical Functionalization of Carbon Nanomaterials
Author :
Publisher : CRC Press
Total Pages : 1087
Release :
ISBN-10 : 9781482253962
ISBN-13 : 1482253968
Rating : 4/5 (62 Downloads)

Synopsis Chemical Functionalization of Carbon Nanomaterials by : Vijay Kumar Thakur

Carbon-based nanomaterials are rapidly emerging as one of the most fascinating materials in the twenty-first century. Chemical Functionalization of Carbon Nanomaterials: Chemistry and Applications provides a thorough examination of carbon nanomaterials, including their variants and how they can be chemically functionalized. It also gives a comprehe

Molecular Modeling of Geochemical Reactions

Molecular Modeling of Geochemical Reactions
Author :
Publisher : John Wiley & Sons
Total Pages : 436
Release :
ISBN-10 : 9781118845080
ISBN-13 : 1118845080
Rating : 4/5 (80 Downloads)

Synopsis Molecular Modeling of Geochemical Reactions by : James D. Kubicki

Molecular processes in nature affect human health, the availability of resources and the Earth’s climate. Molecular modelling is a powerful and versatile toolbox that complements experimental data and provides insights where direct observation is not currently possible. Molecular Modeling of Geochemical Reactions: An Introduction applies computational chemistry to geochemical problems. Chapters focus on geochemical applications in aqueous, petroleum, organic, environmental, bio- and isotope geochemistry, covering the fundamental theory, practical guidance on applying techniques, and extensive literature reviews in numerous geochemical sub-disciplines. Topics covered include: • Theory and Methods of Computational Chemistry • Force Field Application and Development • Computational Spectroscopy • Thermodynamics • Structure Determination • Geochemical Kinetics This book will be of interest to graduate students and researchers looking to understand geochemical processes on a molecular level. Novice practitioners of molecular modelling, experienced computational chemists, and experimentalists seeking to understand this field will all find information and knowledge of use in their research.

Many-Body Approach to Electronic Excitations

Many-Body Approach to Electronic Excitations
Author :
Publisher : Springer
Total Pages : 596
Release :
ISBN-10 : 9783662445938
ISBN-13 : 366244593X
Rating : 4/5 (38 Downloads)

Synopsis Many-Body Approach to Electronic Excitations by : Friedhelm Bechstedt

The many-body-theoretical basis and applications of theoretical spectroscopy of condensed matter, e.g. crystals, nanosystems, and molecules are unified in one advanced text for readers from graduate students to active researchers in the field. The theory is developed from first principles including fully the electron-electron interaction and spin interactions. It is based on the many-body perturbation theory, a quantum-field-theoretical description, and Green's functions. The important expressions for ground states as well as electronic single-particle and pair excitations are explained. Based on single-particle and two-particle Green's functions, the Dyson and Bethe-Salpeter equations are derived. They are applied to calculate spectral and response functions. Important spectra are those which can be measured using photoemission/inverse photoemission, optical spectroscopy, and electron energy loss/inelastic X-ray spectroscopy. Important approximations are derived and discussed in the light of selected computational and experimental results. Some numerical implementations available in well-known computer codes are critically discussed. The book is divided into four parts: (i) In the first part the many-electron systems are described in the framework of the quantum-field theory. The electron spin and the spin-orbit interaction are taken into account. Sum rules are derived. (ii) The second part is mainly related to the ground state of electronic systems. The total energy is treated within the density functional theory. The most important approximations for exchange and correlation are delighted. (iii) The third part is essentially devoted to the description of charged electronic excitations such as electrons and holes. Central approximations as Hedin's GW and the T-matrix approximation are discussed.(iv) The fourth part is focused on response functions measured in optical and loss spectroscopies and neutral pair or collective excitations.