E. Dagotto and Y. Tokura
- Published in print:
- 2012
- Published Online:
- January 2013
- ISBN:
- 9780199584123
- eISBN:
- 9780191745331
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780199584123.003.0001
- Subject:
- Physics, Condensed Matter Physics / Materials
This chapter summarizes the status of the very active field of research where the strength of the effective Coulombic repulsion among electrons is comparable to the bandwidth of the carriers. It ...
More
This chapter summarizes the status of the very active field of research where the strength of the effective Coulombic repulsion among electrons is comparable to the bandwidth of the carriers. It focuses on complex transition-metal oxides, with emphasis on the manganese oxides known as manganites that display the so-called Colossal Magnetoresistance effect. It also describes several other materials such as high-temperature superconductors and multiferroics. In these correlated electron materials the interactions between the electronic spins, their charges and orbitals, and the lattice produce a rich variety of electronic phases and self-organization. The competition and/or cooperation among these correlated electron phases can lead to the emergence of surprising electronic phenomena and also of interesting functionalities via their nonlinear responses to external fields.Less
This chapter summarizes the status of the very active field of research where the strength of the effective Coulombic repulsion among electrons is comparable to the bandwidth of the carriers. It focuses on complex transition-metal oxides, with emphasis on the manganese oxides known as manganites that display the so-called Colossal Magnetoresistance effect. It also describes several other materials such as high-temperature superconductors and multiferroics. In these correlated electron materials the interactions between the electronic spins, their charges and orbitals, and the lattice produce a rich variety of electronic phases and self-organization. The competition and/or cooperation among these correlated electron phases can lead to the emergence of surprising electronic phenomena and also of interesting functionalities via their nonlinear responses to external fields.
Evgeny Y. Tsymbal, Elbio R. A. Dagotto, Chang-Beom Eom, and Ramamoorthy Ramesh (eds)
- Published in print:
- 2012
- Published Online:
- January 2013
- ISBN:
- 9780199584123
- eISBN:
- 9780191745331
- Item type:
- book
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780199584123.001.0001
- Subject:
- Physics, Condensed Matter Physics / Materials
This book is devoted to the rapidly developing field of research on oxide thin-films and heterostructures. Recent advances in thin-film deposition and characterization techniques made possible the ...
More
This book is devoted to the rapidly developing field of research on oxide thin-films and heterostructures. Recent advances in thin-film deposition and characterization techniques made possible the experimental realization of such heterostructures, where two or more complex oxides are combined with atomic-scale precision. Especially notable advances have been made over the past few years, driven by the discovery of fascinating new physical phenomena in oxide heterostructures. The fundamental science underlying these phenomena is rich and exciting and promises novel functionalities and device concepts. The book consists of a set of chapters on topics that represent some of the key innovations in the field over recent years. It starts from fundamentals that include two chapters discussing physics of strongly correlated electronic materials and magnetoelectric coupling in multiferroic materials. Part II of the book is devoted to the growth and characterization of oxide heterostructures and includes four chapters on these subjects comprising key experimental developments in advanced deposition and characterization techniques. Part III of the book addresses functional properties of oxide heterostructures, including two-dimensional electron gases at oxide interfaces, manganite multilayers, and thermoelectric phenomena. Part IV of the book is focused on existing and potential applications of oxide heterostructures, including high-k dielectric materials, ferroelectric field effect transistors (FeFET) and ferroelectric random access memories (FeRAM), and new concepts of oxide electronics. Overall, this book covers the core principles of oxide electronic materials, describes experimental approaches to fabricate and characterize oxide thin-films and heterostructures, demonstrates new functional properties of these materials, and provides an overview of novel applications, as well as the challenges and opportunities in the field.Less
This book is devoted to the rapidly developing field of research on oxide thin-films and heterostructures. Recent advances in thin-film deposition and characterization techniques made possible the experimental realization of such heterostructures, where two or more complex oxides are combined with atomic-scale precision. Especially notable advances have been made over the past few years, driven by the discovery of fascinating new physical phenomena in oxide heterostructures. The fundamental science underlying these phenomena is rich and exciting and promises novel functionalities and device concepts. The book consists of a set of chapters on topics that represent some of the key innovations in the field over recent years. It starts from fundamentals that include two chapters discussing physics of strongly correlated electronic materials and magnetoelectric coupling in multiferroic materials. Part II of the book is devoted to the growth and characterization of oxide heterostructures and includes four chapters on these subjects comprising key experimental developments in advanced deposition and characterization techniques. Part III of the book addresses functional properties of oxide heterostructures, including two-dimensional electron gases at oxide interfaces, manganite multilayers, and thermoelectric phenomena. Part IV of the book is focused on existing and potential applications of oxide heterostructures, including high-k dielectric materials, ferroelectric field effect transistors (FeFET) and ferroelectric random access memories (FeRAM), and new concepts of oxide electronics. Overall, this book covers the core principles of oxide electronic materials, describes experimental approaches to fabricate and characterize oxide thin-films and heterostructures, demonstrates new functional properties of these materials, and provides an overview of novel applications, as well as the challenges and opportunities in the field.
M. Varela, C. Leon, J. Santamaria, and S. J. Pennycook
- Published in print:
- 2012
- Published Online:
- January 2013
- ISBN:
- 9780199584123
- eISBN:
- 9780191745331
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780199584123.003.0005
- Subject:
- Physics, Condensed Matter Physics / Materials
Complex oxides represent a hot field of materials physics, exhibiting some of the most disparate physical behaviours such as colossal magnetoresistance or High-Tc superconductivity, which are still ...
More
Complex oxides represent a hot field of materials physics, exhibiting some of the most disparate physical behaviours such as colossal magnetoresistance or High-Tc superconductivity, which are still far from understood. Many of these properties rely on the presence of small active regions, and in many cases it has been suggested that these behaviours may be linked to an underlying density of defects, such as O vacancies. A full understanding of the physical processes involved relies on probes capable of studying these systems in real space and with atomic resolution. This chapter reviews the state-of-the-art of scanning transmission electron microscopy and electron energy-loss spectroscopy along with some applications to complex oxides. It starts by giving a brief introduction to the technique, including explanations of the mechanisms underlying imaging and issues with interpretation. This is followed with a number of applications to both bulk oxide materials and interfaces in heterostructures.Less
Complex oxides represent a hot field of materials physics, exhibiting some of the most disparate physical behaviours such as colossal magnetoresistance or High-Tc superconductivity, which are still far from understood. Many of these properties rely on the presence of small active regions, and in many cases it has been suggested that these behaviours may be linked to an underlying density of defects, such as O vacancies. A full understanding of the physical processes involved relies on probes capable of studying these systems in real space and with atomic resolution. This chapter reviews the state-of-the-art of scanning transmission electron microscopy and electron energy-loss spectroscopy along with some applications to complex oxides. It starts by giving a brief introduction to the technique, including explanations of the mechanisms underlying imaging and issues with interpretation. This is followed with a number of applications to both bulk oxide materials and interfaces in heterostructures.
