Superconductivity

Superconductivity INTRODUCTION We've all heard about superconductivity. But, do we all know what it is? How it works and what are its uses? To start talking about superconductivity, we must try to understand the how "normal" conductivity works. This will make it much easier to understand how the "super" part functions. In the following paragraphs, I will explain how superconductivity works, some of the current problems and some examples of its uses. CONDUCTIVITY Conductivity

The purpose of this paper is to examine the materials, properties, and theory of superconductivity, a quantum phenomenon that occurs when a material is brought below a critical temperature and will conduct electricity without any resistance, the nearest model in nature to perpetual motion. According to Ecks (1990), Once current is applied to a superconducting material the current will continue in a closed lope without ever losing intensity. (Ecks, 1990) Superconductive materials can greatly vary

New Superconductors: Advances, Issues, Limitations Report by Amber Taylor CHME 5699 Dr. Laura Lewis Final Report 23 April 2014 Executive Summary One of the most exciting and magical phenomena observed today in science is the levitation of superconductors in the presence of a magnetic field. While entertaining, this effect is also extremely useful and could combat one of the largest issues facing the world today: how can we continue to transport goods and people without burning fossil fuels

IMPACT OF EIGENVALUES ON THE ELECTRON-PHONON COUPLING STRENGTH OF INDIUM AND ITS BINARY ALLOYS S. K. Chakrabarti Department of Physics Tribhuvan University, MMAM Campus, Biratnagar, Nepal ABSTRACT Indium is a trivalent metal. Though chemically not so reactive, it often forms complexes within its binary alloys. In this theoretical work we have studied the impact of eigenvalues on the electron-phonon coupling strength of indium. We have also dealt with the same for two binary alloys of it viz

CHAPTER 2 LITERATURE REVIEW 2.1 Introduction of YBCO Yttrium-Barium-Copper-Oxide (YBCO) is a type II high temperature superconductor (Rana et al., 2016) called 1-2-3 superconductors. The superconductivity is depending on the hole and electron concentration present. Previous research finds that YBCO has highest transition temperature (TC) that is 92 K. The unit cell of the YBCO is an orthorthombic structure. The CuO2 molecule are interconnected with CuO3 and then provide additional electron

given by the follwoing eqution: Bc ≈ Bc(0) * [1 - (T/Tc)^2] In the early 1900's a duch physicist by the name of Heike Kammerlingh Onnes (pictured above), discovered superconductivity. Before his discovery, Onnes had spent most of his scientific career studying extreme cold. The first step he took toward superconductivity was on July 10, 1908 when he liquified helium and cooled it to an astonishing 4 K, which is roughly the temperature of the background radiation in open space. Using this liquid

Advances in Superconductors and their Uses A superconductor is an element or compound that will conduct electricity without resistance below a cretin temperature. The phenomenon was discovered in 1911 by Kamerlingh Onnes, who found that the resistance of mercury dropped suddenly to zero at a temperature of about 4.2°K. For the next 75 years there followed a rather steady string of announcements of new materials that become superconducting near absolute zero. A major breakthrough occurred in 1986

INTRODUCTION The world today is entirely dependent on various means of transportation for their day to day and hence a more rapid and reliable source of transportation is must. People today recognizes aero plane as the fastest means of transportation which has its own disadvantages and there were no other options available till the beginning of the 20th century , but with the development in technology there were other means of transport which came into action and one of which was the MAGLEV TRAIN

Traditionally in school we are taught that there are only four states of matter: solid, liquid, gas, and plasma. Fortunately this is not true as that would be boring. There are also at least 4 other-less common states and Icontest a fifth. These are Bose-Einstein condensate, photonic molecules, quark-gluon plasma, superconductors, and superfluids. They all have unique properties that clearly distinguish differences between them and the traditional four states. These breakthroughs could help us in

These are termed as macroscopic quantum coherence effects. 1.1.2 Superconductivity On lowering the temperature of some metals (materials) to a scale of few kelvins the electrons experience a net attractive force amongst themselves. This is attraction is phonon mediated. As a result of bonding between two electrons near