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Title: Seeing Stripes: Competition and Complexity in High-Temperature Superconductors

Superconductivity in layered copper-oxide compounds is remarkable not only because it survives to relatively high temperatures, but especially because it appears when mobile charge carriers are doped more »into a parent antiferromagnetic insulator. The tendency of the carriers to reduce their kinetic energy by delocalizing competes with the magnetic superexchange between spins on copper ions. One possible consequence of this competition is the segregation of carriers into charge stripes that separate antiferromagnetic domains. An ordered stripe phase has been observed by diffraction experiments in a few special cuprate compounds, and stripe order is found to compete with superconductivity. It has been proposed that quantum-disordered stripes might underlie the superconducting phase. Such a concept clashes with the conventional picture of electronic structure in solids. Some of the challenges of experimentally 'seeing' both static and fluctuating stripes will be discussed.« less
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Title: Seeing Stripes: Competition and Complexity in High-Temperature Superconductors
Authors:
Publication Date: 2004-12-01
OSTI Identifier: 1006209
DOE Contract Number: DE-ACO2-06CH11357
Other Number(s): TRN: US1200336
Resource Type: Multimedia
Resource Relation: Conference: APS Colloquium Series, Advanced Photon Source (APS) at Argonne National Laboratory, Argonne, Illinois (United States), presented on December 01, 2004
Research Org: ANL (Argonne National Laboratory (ANL), Argonne, IL (United States))
Sponsoring Org: USDOE Office of Science (SC)
Subject: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ; ANTIFERROMAGNETIC MATERIALS ; CHARGE CARRIERS ; CHARGE DENSITY ; COPPER COMPOUNDS ; COPPER IONS ; CUPRATES ; DIFFRACTION ; DOMAIN STRUCTURE ; DOPED MATERIALS ; ELECTRONIC STRUCTURE ; LAYERS ; KINETIC ENERGY ; OXIDES ; SEGREGATION ; SPIN ; SUPERCONDUCTIVITY ; HIGH-TC SUPERCONDUCTORS
Country of Publication: United States
Language: English
Run Time: 0:49:28
System Entry Date: 2016-01-27