Download or read book Induced Superconductivity in Two Dimensional Electron Gas System written by Zhong Wan and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Probing High temperature Superconductivity and the Two dimensional Electron Gas at the LaAlO3 SrTiO3 Interface with Infrared Spectroscopy written by Adam Dubroka and published by . This book was released on 2010 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mesoscopic Superconductor 2 dimensional Electron Gas Superconductor Junctions written by Lucas Cornelis Mur and published by . This book was released on 1998 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Topological Orders with Spins and Fermions written by Laura Ortiz Martín and published by Springer. This book was released on 2019-07-11 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis deals with topological orders from two different perspectives: from a condensed matter point of view, where topological orders are considered as breakthrough phases of matter; and from the emerging realm of quantum computation, where topological quantum codes are considered the most appealing platform against decoherence. The thesis reports remarkable studies from both sides. It thoroughly investigates a topological order called the double semion model, a counterpart of the Kitaev model but exhibiting richer quasiparticles as excitations. A new model for symmetry enriched topological order is constructed, which adds an onsite global symmetry to the double semion model. Using this topological phase, a new example of topological code is developed, the semion code, which is non-CSS, additive, non-Pauli and within the stabiliser formalism. Furthermore, the thesis analyses the Rashba spin-orbit coupling within topological insulators, turning the helical edge states into generic edges modes with potential application in spinstronics. New types of topological superconductors are proposed and the novel properties of the correspondingly created Majorana fermions are investigated. These Majorana fermions have inherent properties enabling braiding and the performance of logical gates as fundamental blocks for a universsal quantum computator.

Download or read book Chalcogenide written by Xinyu Liu and published by Woodhead Publishing. This book was released on 2019-11-14 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chalcogenide: From 3D to 2D and Beyond reviews graphene-like 2D chalcogenide systems that include topological insulators, interesting thermoelectric structures, and structures that exhibit a host of spin phenomena that are unique to 2D and lower-dimensional geometries. The book describes state-of-the-art materials in growth and fabrication, magnetic, electronic and optical characterization, as well as the experimental and theoretical aspects of this family of materials. Bulk chalcogenides, chalcogenide films, their heterostructures and low-dimensional chalcogenide-based quantum structures are discussed. Particular attention is paid to findings that are relevant to the continued search for new physical phenomena and new functionalities. Finally, the book covers the enormous opportunities that have emerged as it has become possible to achieve lower-dimensional chalcogenide structures by epitaxial techniques. Provides readers with foundational information on the materials growth, fabrication, magnetic, electronic and optical characterization of chalcogenide materials Discusses not only bulk chalcogenides and chalcogenide thin films, but also two-dimensional chalcogenide materials systems Reviews the most important applications in optoelectronics, photovoltaics and thermoelectrics

Download or read book Emergent Superconductivity in Low Dimensions written by Diane Ansermet and published by Springer. This book was released on 2018-11-19 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores the relationship between electronic correlations, dimensionality, inhomogeneities, and superconductivity in low-dimensional systems by studying single crystals of the quasi-one-dimensional Na2–δMo6Se6, composed of MoSe filaments weakly coupled by Na atoms and subject to intrinsic disorder (δ > 0). It shows that the Na2-δMo6Se6 displays strong electronic correlations in its normal state, whereas a superconducting ground state emerges from Anderson localized electrons. Two novel behaviors of the superconducting state are observed: first, a disorder induced enhancement of the superconducting transition temperature; second, a reentrant phase coherence with increasing temperature, magnetic field, and current. It also analyzes the intrinsic properties of Na2-δMo6Se6 are analyzed to offer a thorough understanding of these phenomena. The emergence of superconductivity in such low-dimensional systems provides a fruitful playground to explore electronic order and correlations.

Download or read book Selected Works of Professor Herbert Kroemer written by C. K. Maiti and published by World Scientific. This book was released on 2008 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: Information technology has changed our society radically. Just as the integrated circuits have been the prime mover for electronics, high-speed transistors and semiconductor lasers based on heterostructures are now playing the same role in modern telecommunications. Professor Kroemer's conceptual work on heterostructures began in the early 1950s as he was looking for a way to improve transistor speed and performance. In the 1960s, he applied the same principles to the development of lasers and light-emitting diodes, showing that they could achieve continuous operation at room temperature OCo something thought impossible at that time. His deep fundamental scientific work has had a profound effect on technology and society, transforming and improving our lives.This reprint collection brings together Professor Kroemer's most important papers, presenting a comprehensive perspective of the field. It covers topics ranging from substrate materials, electronic properties, process technology, and devices, to circuits and applications. This reprint collection will help the reader identify the key stages in the development of heterostructure devices and lasers from early research through to its integration in current manufacturing. Devoted to R&D engineers and scientists who are actively involved in extending the nano- and microelectronics roadmap mainly via heterostructure engineering, this volume may also serve as a reference for postgraduate and research students."

Download or read book Superconductivity written by Paolo Mele and published by Springer Nature. This book was released on 2019-08-21 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides readers with a comprehensive overview of the science of superconducting materials. It serves as a fundamental information source on the actual techniques and methodologies involved in superconducting materials growth, characterization and processing. This book includes coverage of several categories of medium and high-temperature superconducting materials: cuprate oxides, borides, and iron-based chalcogenides and pnictides. Provides a single-source reference on superconducting materials growth, characterization and processing; Bridges the gap between materials science and applications of superconductors; Discusses several categories of superconducting materials such as cuprate oxides, borides, and iron-based chalcogenides and pnictides; Covers synthesis, characterization, and processing of superconducting materials, as well as the nanoengineering approach to tailor the properties of the used materials at the nanoscale level.

Download or read book Foundations Of Quantum Mechanics In The Light Of New Technology Selected Papers From The Proceedings Of The First Through Fourth International Symposia On Foundations Of Quantum Mechanics written by Yoshimasa Murayama and published by World Scientific. This book was released on 1997-01-03 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: ”I re-experience once again the stimulating atmosphere of each of the ISQMs: There were theoretical discussions in diverse frontier areas of physics as well as descriptions of beautiful new (or planned) experiments and technologies. From each of the Symposia I always came away with the exciting feeling of how wonderful physics is and how lucky it is to be a physicist in this era.”Chen Ning YangThis volume is selected from the First through Fourth International Symposia on Foundations of Quantum Mechanics. The International Symposia on Foundations of Quantum Mechanics in the Light of New Technology (ISQMs) provide a unique interdisciplinary forum where distinguished theorists and experimentalists of diverse fields of research gather to discuss basic problems in quantum mechanics in the light of new technology. This volume collects 51 papers selected from over 200 papers by many distinguished scientists. It includes articles by C N Yang, J A Wheeler, Y Nambu, L Esaki and M P A Fisher, to name just a few, and contains topics ranging from quantum measurements to quantum cosmology.

Download or read book Proceedings of the 2nd International Symposium Foundations of Quantum Mechanics in the Light of New Technology written by Mikio Namiki and published by . This book was released on 1987 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976-04 with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Physics of the Two Dimensional Electron Gas written by J.T. Devreese and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 1986 Advanced Study Institute on "The Physics of the two-Dimen sional Electron Gas" took place at the Conference Centre liTer Helme", close to Oostende (Belgium), from June 2 till 16, 1986. We were motivated to organize this Advanced Study Institute in view of the recent experimental and theoretical progress in the study of the two-dimensional electron gas. An additional motivation was our own theore tical interest in cyclotron resonance in two-dimensional electron systems at our institute. It is my pleasure to thank several instances and people who made this Advanced Study Institute possible. First of all, the sponsor of the Advanced Study Institute, the NATO Scientific Committee. Furthermore, the co sponsors: Agfa Gevaert, Bell Telephone Mfg. Co. N.V., Burroughs Belgium. Control Data. Digital Equipment Corporation, Esso Belgium. European Research Office (USA). Kredietbank. National Science Foundation (USA). Special thanks are due to the members of the Program Committee and the members of the Organizing Committee. I would also like to thank Mrs. H. Evans for typing assistance.

Download or read book The Two dimensional Electron Gas at the Lanthanum Aluminate Strontium Titanate Heterointerface written by and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the discovery of the conducting two dimensional electron gas (2DEG) at the interface of insulating oxide materials LaAlO3 and SrTiO3 in 2004, this system has shown a vast diversity of physical properties including superconductivity, ferromagnetism and field induced metal-insulator phase transitions. In this dissertation we discuss three advances by our collaboration that bolster applicability of this interfacial system. In an all thin-film LaAlO3/SrTiO3 system we identified two different conduction regimes, where the effect of oxygen partial pressure during growth directly affects the carrier density of the system. In the lower carrier density regime (8́ơ 1013 cm-2) we found a metallic to insulating temperature dependence and strong localization by disorder, whereas in the higher regime (> 1014 cm-2) we find metallic dependence with signs of weak localization. This is understood in the occupation of Ti 3d bands farther from the interface as carrier density is increased. Our work in the electronic properties of all-thin-film LaAlO3/SrTiO3 pioneers the understanding and implementations of this 2DEG to harness the richness of this oxide interface and its integration to industry standard substrates. Furthermore, we showed the first conducting LaAlO3/SrTiO3 two-dimensional system grown by the physical vapor deposition technique: 90 & deg off-axis sputtering. Films grown with this scalable technique have excellent crystalline quality and transport characteristics similar to those grown by (mostly research employed) pulsed laser deposition. Writing of circuits on the nanoscale using conducting-tip atomic force microscopy is demonstrated in sputtered LaAlO3 on SrTiO3, opening the doors to nanoelectronic application of this novel interfacial system. Moreover, we are among the first groups in the world to demonstrate conducting [111]-oriented LaAlO3/SrTiO3 heterostructures, a crystallographic orientation that proves to be challenging due to the large polar nature of perovskite oxides in this stacking direction. An interplay between structural and electronic reconstructions is at work to resolve the polarization divergence. This drives the LaAlO3/SrTiO3 (111) system from insulating to conducting with increasing LaAlO3 thickness, displaying a broader transition than the conventional (001) system and a similar n-type 2DEG.

Download or read book Spintronics Handbook Second Edition Spin Transport and Magnetism written by Evgeny Y. Tsymbal and published by CRC Press. This book was released on 2019-05-20 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition offers an update on the single most comprehensive survey of the two intertwined fields of spintronics and magnetism, covering the diverse array of materials and structures, including silicon, organic semiconductors, carbon nanotubes, graphene, and engineered nanostructures. It focuses on seminal pioneering work, together with the latest in cutting-edge advances, notably extended discussion of two-dimensional materials beyond graphene, topological insulators, skyrmions, and molecular spintronics. The main sections cover physical phenomena, spin-dependent tunneling, control of spin and magnetism in semiconductors, and spin-based applications.

Download or read book Superconductivity in Two dimensions from the Hubbard Model to the Su Schrieffer Heeger Model written by Dipayan Roy and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: We study unconventional superconductivity in two-dimensional systems. Unbiased numerical calculations within two-dimensional Hubbard models have found no evidence for long-range superconducting order. Most of the two-dimensional theories suggest that the superconducting state can be obtained by destabilizing an antiferromagnetic or spin-liquid insulating state. An antiferromagnet is a half-filled system because each site has one electron or hole. However, in anisotropic triangular lattices, numerical calculation finds pairing enhancement at quarter-filling but no long-range superconducting order. Many organic superconductors are dimerized in nature. Such a dimer lattice is effectively half-filled because each dimer has one electron or hole. Some theories suggest that magnetic fluctuation in such a system can give superconductivity. However, at zero temperature, we performed density matrix renormalization group (DMRG) calculations in such a system, and we find no superconducting long-range order. We also find that the antiferromagnetic order is not necessary to get a superconducting state. Failure in explaining superconductivity in two-dimensional systems suggests that only repulsive interactions between electrons are not sufficient, and other interactions are required. The most likely candidate is the electron-phonon interaction. However, existing theories of superconductivity emphasize either electron-electron or electron-phonon interactions, each of which tends to cancel the effect of the other. We present direct evidence from quantum Monte Carlo calculations of cooperative, as opposed to competing, effects of electron-electron and electron-phonon interactions within the frustrated Hubbard Hamiltonian, uniquely at the band-filling of one-quarter. Bond-coupled phonons and the onsite Hubbard U cooperatively reinforce d-wave superconducting pair-pair correlations at this filling while competing with one another at all other densities. Our work further gives new insight into how intertwined charge-order and superconductivity appear in real materials.

Download or read book Physics Briefs written by and published by . This book was released on 1993 with total page 1058 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spin Fluctuation induced Superconductivity in Two and Three Dimensional Systems written by Satoshi Nakamura and published by . This book was released on 1996 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: