Publication

Anisotropy in the ab-plane optical properties of Bi2Sr2CaCu2O8 single-domain crystals

Giorgio Margaritondo, Helmuth Berger
1999
Journal Articles

Abstract

The ab-plane optical properties of the high-temperature superconductor Bi2Sr2CaCu2O8 are anisotropic in both the normal and the superconducting state. Consistent with the orthorhombic structure, the principal axes lie along the a and b crystallographic axes, nearly 45 degrees from the Cu-O bond direction. In the normal state, analysis of the temperature-dependent optical conductivity suggests a:scattering rate for the free carriers that shows ab anisotropy in both magnitude and temperature dependence. In;the superconducting state, the anisotropy in the oscillator strength of the superfluid response determined from the far-infrared frequency dependence of sigma(2)(omega) and from a sum-rule analysis leads to a penetration depth lambda(D) that is larger along the b axis than the a axis: (lambda(L)(b)>lambda(L)(a)). [S0163-1829(99)01845-7].

Official source

https://infoscience.epfl.ch/entities/publication/8790f535-f67b-446f-b140-10d38005bc27

About this result

This page is automatically generated and may contain information that is not correct, complete, up-to-date, or relevant to your search query. The same applies to every other page on this website. Please make sure to verify the information with EPFL's official sources.

Graph Chat

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

Giorgio Margaritondo, Helmuth Berger
1999
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/8790f535-f67b-446f-b140-10d38005bc27

About this result

Related concepts (32)

Crystal structure

In crystallography, crystal structure is a description of the ordered arrangement of atoms, ions, or molecules in a crystalline material. Ordered structures occur from the intrinsic nature of the constituent particles to form symmetric patterns that repeat along the principal directions of three-dimensional space in matter. The smallest group of particles in the material that constitutes this repeating pattern is the unit cell of the structure.

Crystallographic database

A crystallographic database is a database specifically designed to store information about the structure of molecules and crystals. Crystals are solids having, in all three dimensions of space, a regularly repeating arrangement of atoms, ions, or molecules. They are characterized by symmetry, morphology, and directionally dependent physical properties. A crystal structure describes the arrangement of atoms, ions, or molecules in a crystal.

Superconducting magnet

A superconducting magnet is an electromagnet made from coils of superconducting wire. They must be cooled to cryogenic temperatures during operation. In its superconducting state the wire has no electrical resistance and therefore can conduct much larger electric currents than ordinary wire, creating intense magnetic fields. Superconducting magnets can produce stronger magnetic fields than all but the strongest non-superconducting electromagnets, and large superconducting magnets can be cheaper to operate because no energy is dissipated as heat in the windings.

Related publications (32)

Anisotropy in the ab-plane optical properties of Bi2Sr2CaCu2O8 single-domain crystals

Chat with Graph Search

Collective mode dynamics in quantum materials probed by ultrafast electron diffraction

Towards atomically-thin regime in bulk 4H-NbSe2 with interlayer disorder

3D printing assisted by upconversion nanoparticles