High-Temperature Cuprate Superconductors, Nikolay Plakida
Автор: Yuri Izyumov; Ernst Kurmaev Название: High-Tc Superconductors Based on FeAs Compounds ISBN: 3642266010 ISBN-13(EAN): 9783642266010 Издательство: Springer Рейтинг: Цена: 23058.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: This, the first volume on an emerging topic in materials science, examines in depth the physical properties and models of a new class of high-TC superconductors which belong to iron-based layered compounds, and which have similar physical characteristics.
This thesis provides a detailed introduction to quantum oscillation measurement and analysis and offers a connection between Fermi surface properties and superconductivity in high-temperature superconductors. It also discusses the field of iron-based superconductors and tests the models for the appearance of nodes in the superconducting gap of a 111-type pnictide using quantum oscillation measurements combined with band structure calculation.
The same measurements were carried out to determine the quasiparticle mass in BaFe2(As1-xPx)2, which is strongly enhanced at the expected quantum critical point. While the lower superconducting critical field shows evidence of quantum criticality, the upper superconducting critical field is not influenced by the quantum critical point. These findings contradict conventional theories, demonstrating the need for a theoretical treatment of quantum critical superconductors, which has not been addressed to date.
The quest to discover similar evidence in the cuprates calls for the application of extreme conditions. As such, quantum oscillation measurements were performed under high pressure in a high magnetic field, revealing a negative correlation between quasiparticle mass and superconducting critical temperature.
Автор: Wesche Название: Physical Properties of High-Temperature Superconductors ISBN: 1119978815 ISBN-13(EAN): 9781119978817 Издательство: Wiley Рейтинг: Цена: 21693.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: A much-needed update on complex high-temperature superconductors, focusing on materials aspects; this timely book coincides with a recent major break-through of the discovery of iron-based superconductors.
This book mainly focuses on the study of the high-temperature superconductor Bi2Sr2CaCu2O8+? (Bi2212) and single-layer FeSe film grown on SrTiO3 (STO) substrate by means of angle-resolved photoemission spectroscopy (ARPES). It provides the first electronic evidence for the origin of the anomalous high-temperature superconductivity in single-layer FeSe grown on SrTiO3 substrate. Two coexisted sharp-mode couplings have been identified in superconducting Bi2212. The first ARPES study on single-layer FeSe/STO films has provided key insights into the electronic origin of superconductivity in this system. A phase diagram and electronic indication of high Tc and insulator to superconductor crossover have been established in the single-layer FeSe/STO films. Readers will find essential information on the techniques used and interesting physical phenomena observed by ARPES.
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