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Friday, July 10, 2020 | History

2 edition of Structure of domains in thin film superconductors found in the catalog.

Structure of domains in thin film superconductors

by Walter D. Hall

  • 303 Want to read
  • 21 Currently reading

Published by Naval Postgraduate School in Monterey, California .
Written in English

    Subjects:
  • Physics

  • Edition Notes

    Statementby Walter D. Hall and James S. Jordan
    ContributionsJordan, James S.
    ID Numbers
    Open LibraryOL25159348M

    Superconductors for Bolometer Device Applications Jose C. Verde et al-Microscale and nanoscale pinning centres in single-domain REBCO superconductors Vilém Bartnk et al-Au Nanoparticles as Template for Defect Formation in Memristive SrTiO3 Thin Films Nicolas Raab et al-This content was downloaded from IP address on 05/05/ at The main topics cover new insights into the basic mechanism of high temperature superconductivity, recent developments of new superconducting materials, the state of the art of thin film production,theoretical understanding of the electronic structures in this kind of material, theories for strongly correlated electron systems, and many.

    thin films as well as the device fabrication of Fe-based superconductors. Similar to bulk synthesis, the technical difficulties in thin film fabrication strongly depend on the material system. Thus, this review article is divided into the following categories: §2. thin films, §3. thin films, §4. Basic model. We consider a thin film of the type-II superconductor in the form of a long thin tape of rectangular cross-section in the x–y plane and of thickness 2b and width 2a, such that b.

    The second edition was significantly extended by including film-substrate lattice matching and buffer layer considerations in thin film HTSCs, brick-wall microstructure in the epitaxial films, electronic structure of the CuO2 layer in cuprates, s-wave and d-wave coupling in HTSCs and possible scenarios of theories of high Tc : Hardcover. Ferroelectricity is a characteristic of certain materials that have a spontaneous electric polarization that can be reversed by the application of an external electric field. All ferroelectrics are pyroelectric, with the additional property that their natural electrical polarization is term is used in analogy to ferromagnetism, in which a material exhibits a permanent magnetic.


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Structure of domains in thin film superconductors by Walter D. Hall Download PDF EPUB FB2

The superconducting tunnel junction (STJ) detector typically consists of a superconductor-insulator-superconductor (SIS) thin-film structure where the insulator is a very thin (∼2 nm) native-oxide layer, usually Al 2 O 3. The STJ is cooled below 1/10 of the superconducting transition temperature to condense almost all its electrons into Cooper pairs.

The Conference on the Science and Technology of Thin Film Superconductors was conceived in the early part of as a forum for the specialist in thin film superconductivity. The conference was held on November, in Co lorado Springs, Co lorado. creating thin films. Configuration for a Standard Film: Substrate: Strontium Titanate (STO) -Temperature: °C -O 2 pressure: mbar for YBCO mbar for YBCO + BZO -Laser: Pulses @ 5Hz with mJ.

1 Domain structure in CoFeB thin films with perpendicular magnetic anisotropy Michihiko Yamanouchi 1, Albrecht Jander 2,3, Pallavi Dhagat 2,3, Shoji Ikeda 1,3, Fumihiro Matsukura 1,3, and Hideo Ohno 1,3 1 Center for Spintronics Integrated Systems, Tohoku University, KatahiraAoba-ku, SendaiJapan 2 School of Electrical Engineering and Computer Science, Oregon State University.

Abstract The surface properties of superconductors have been studied using low energy electron diffraction and Auger spectroscopy. Thin films of superconducting compounds have been produced by evaporating thin layers of aluminum and tin onto niobium and then annealing at a suitable temperature.

Combined domain (CD) structures of superconducting (SC) vortices strongly coupled to magnetic domains are studied using direct magneto-optical imaging in a bilayer of type II SC Nb film on a RE.

The domain structure and its evolution as a function of temperature in the () cub-oriented PSN single crystals and the () cub-oriented (1–x)PSN–xPT single crystals with different compositions have been observed and examined by cross polarized light microscopy (Olympus BX60) in a temperature range between − °C and °C.

Figure shows a typical domain pattern in the (   The strain induced on the walls between ferroelastic domains of a thin film of terbium manganite grown on a substrate of strontium titanate can generate an unusual two-dimensional ferromagnetic.

IX SUPERCONDUCTIVITY IN THIN FILMS 1. Introduction 2. Basic Concepts 3. Transition Temperature of Thin-film Superconductors Introduction Thickness Dependence Superconductivity-enhancement Phenomenon Mechanisms of Enhanced Superconductivity Influence of Stress Thin Film Problems in Superconductivity L.

Prigozhin1 J. Barrett2 V. Sokolovsky1 1Ben-Gurion University of the Negev, Israel 2Imperial College London, UK Sept Outlook: Thin lm magnetization and transport current problems Mixed variational formulation.

Their data show convincingly that the superconducting transition temperature (T c) of thin lead films oscillates with film thickness. As the thickness of a film is reduced to the nanometer scale, the film's surface and interface confine the motions of the electrons, leading to the formation of discrete electronic states known as quantum well states (3).

This conference is the second on the Science and Technology of Thin Film Superconductors. It proved to be an excellent forum for these specialists in thin film superconductivity. The conference, held April May 4,in Denver, Colorado, hosted researchers from 17 countries.

Experimental physicists in the research group led by Professor Uwe Hartmann at Saarland University have developed a thin nanomaterial with superconducting properties. Thin superconducting films are usually regarded as type-II superconductors even when they are made of a type-I materials.

The reason is a strong influence of. Sasaki’s team investigated a thin film of superfluid 3 He at 2 mK with an MRI technique that they previously developed to acquire images of ultracold quantum condensates with 10 휇 m spatial resolution.

Analysis of the MRI data showed that the sample was divided into two or more millimeter-sized chiral domains separated by parallel walls. The Conference on the Science and Technology of Thin Film Superconductors was conceived in the early part of as a forum for the specialist in thin film superconductivity.

The conference was held on November, in Co lorado Springs, Co lorado. Al though many excellent. VII. Boundary-Wall Energy and Domains VIII. Thin Film in Applied Field IX. Domains in Thin Films X. Current-Induced Intermediate State XI. Mixed State in Type II Superconductors Further Reading Problems 12 Critical States I.

Introduction II. Current-Field Relations A. Transport and Shielding Current B. Maxwell Curl Equation and Pinning Force. Superconducting vortices and magnetic domain patterns' evolution in the superconductor-ferromagnet (SC/FM) hybrid bilayer are investigated within the Ginzburg—Landau (GL) theory.

ABSTRACT BOOK This conference is organized within the framework of two-dimensional and ultra-thin film superconductors. Nanofabrication techniques include lithography, controlled constrictions, exfoliation and systems capable to Tuning the Josephson vortex lattice structure with pancake vortices in Bi 2 Sr 2 CaCu 2 O 8+d single crystals.

We report a superconducting transition in a LaO epitaxial thin film with the superconducting transition onset temperature (Tc) at around 5 K. This Tc is higher than those of other lanthanum monochalcogenides and opposite to their chemical trend: Tc =, and K for LaX (X = S, Se, Te), respectively.

The carrier control resulted in a dome-shaped Tc as a function of electron carrier. High Tc thin film superconductors are of great interest because of their potential applications, par­ ticularly in the microelectronics field.

A successful superconductor microelectronic technology depends both on the ability to grow good quality superconducting thin films, and the need to incorporate these.

A research group at Tohoku University has succeeded in fabricating an atomically thin, high-temperature superconductor film with a superconducting transition temperature (Tc) .12 1 Fundamental Properties of Superconductors. For an estimate we assume that we are dealing with a ring of 5cm diameter made from a wire with a thickness of 1mm.

The self-induction coefficient Lof such a ring is about V 10–7 H. If the permanent current in such a ring decreases by less than.