Published 2008 | Version v1
Journal article Metadata-only

Electron phonon interaction and superconductivity in Nb and Pb investigated with neutron resonance spin echo spectroscopy

Creators

  • 1. Max-Planck-Institut fuer Festkrperforschung, Heisenbergstrasse 1, D-70569 Stuttgart (Germany)
  • 2. ZWE FRMII, TUM, Lichtenbergstrasse 1, D-85748 Garching (Germany)
  • 3. Hahn-Meitner-Institut, Glienicker Strasse 100, D-14109 Berlin (Germany)

Description

The momentum and temperature dependency of the phonon lifetime of the transverse acoustic branches along the[110] and[100] directions in Pb and Nb were studied using the high resolution neutron resonance spin-echo, triple-axis technique. Several anomalies were observed, which can in part be assigned to Kohn anomalies. The most striking feature both in Nb and Pb is a Kohn anomaly sitting at a phonon energy corresponding to the superconducting energy gap 2D(T=0). This arises the question if 2D is limited by a Kohn anomaly

Availability note (English)

Also available online: http://www.dpg-tagungen.de/index_en.html

Additional details

Identifiers

URL
http://www.dpg-tagungen.de/index_en.html; http://www.dpg-verhandlungen.de;

Publishing Information

Journal Title
Verhandlungen der Deutschen Physikalischen Gesellschaft
Journal Volume
43
Journal Issue
1
Journal Page Range
[1 p.]
ISSN
0420-0195
CODEN
VDPEAZ

Conference

Title
Physics Education, History of Physics, Radiation and Medical Physics as well as the Working Groups Equal Opportunities, Industry and Business, Information, Physics and Disarmament, Physics of Socio-economic Systems, Young DPG
Original Conference Title
72. Jahrestagung und DPG (Deutsche Physikalische Gesellschaft e.V.) Fruehjahrstagung der Sektion Kondensierte Materie und den Fachverbaenden: Didaktik der Physik, Geschichte der Physik, Strahlen- und Medizinphysik und den Arbeitskreisen Chancengleichheit, Industrie und Wirtschaft, Information, Physik und Abruestung, Physik Sozio-oekonomischer Systeme, Junge DPG
Acronym
72. annual meeting and DPG (Deutsche Physikalische Gesellschaft e.V.) Spring meeting of the Condensed Matter Section and the Divisions
Dates
25-29 Feb 2008
Place
Berlin (Germany)

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
40092841
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ELECTRON-PHONON COUPLING; ENERGY GAP; LEAD; LIFETIME; NEUTRON DIFFRACTION; NEUTRON SPECTRA; NIOBIUM; PHONONS; RESONANCE SCATTERING; SPIN ECHO; SUPERCONDUCTIVITY; TEMPERATURE DEPENDENCE
Descriptors DEC
COHERENT SCATTERING; COUPLING; DIFFRACTION; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ELEMENTS; INELASTIC SCATTERING; METALS; PHYSICAL PROPERTIES; QUASI PARTICLES; REFRACTORY METALS; SCATTERING; SPECTRA; TRANSITION ELEMENTS

Optional Information

Notes
Session: TT 36.9 Fr 12:30; No further information available