Published January 1978
| Version v1
Journal article
Calculation of the phonon spectrum of potassium with a microscopic theory
Description
The microscopic theory of force constants is employed for calculating the phonon frequencies of potassium. As in a preceeding paper we rely upon the translation invariance requirement in the form of a sum rule. Because of this sum rule and an interpolation of the electronic density we avoid any approximation for the density-density correlation function. The resultant phonon spectrum is in good agreement with the experiment. (orig.)
Abstract (German)
Die mikroskopische Theorie der Kraftkonstanten wird fuer die Berechnung der Phononenfrequenzen von Kalium angewendet. Wie schon in einer vorangegangenen Veroeffentlichung beziehen wir uns auf die Translationsinvarianzbedingung in Form einer Summenregel. Aufgrund dieser Summenregel und einer Interpolation der Elektronendichte koenen wir jegliche Approximation fuer die Dichte-Dichte-Korrelationsfunktion vermeiden. Das resultierende Phonenspektrum stimmt mit dem Experiment gut ueberein. (orig.)Additional details
Identifiers
- DOI
- 10.1007/bf01354832;
Publishing Information
- Journal Title
- Zeitschrift f�r Physik B Condensed Matter and Quanta
- Journal Volume
- 29
- Journal Issue
- 1
- Series
- Z. Phys., B.
- Journal Page Range
- 13-15
- ISSN
- 0340-224X
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 9380627
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- DISPERSION RELATIONS; ELECTRON DENSITY; FOURIER TRANSFORMATION; ION DENSITY; MATHEMATICAL MODELS; PHONONS; POTASSIUM; SPECTRA
- Descriptors DEC
- ALKALI METALS; ELEMENTS; INTEGRAL TRANSFORMATIONS; METALS; QUASI PARTICLES; TRANSFORMATIONS
Optional Information
- Notes
- 3 figs.; 1 tab.; 12 refs.; Updated automatically by Metadata and Full-Text Enrichment Agent