Erratum: Light-scattering study of phonon-magnon coupling in antiferromagnetic FeCl2 · 2H2O
Physical Review B American Physical Society (APS) 12:1 (1975) 498-498
Light scattering from soft modes in ferroelectric BaZnF4 and BaMgF4
Solid State Communications Elsevier 16:5 (1975) 471-475
Light-scattering study of phonon-magnon coupling in antiferromagnetic FeCl2. 2H2O
Physical Review B 11:5 (1975) 1960-1969
Abstract:
Raman spectroscopy has been used to study the phonon-magnon coupling in the antiferromagnetic phase of ferrous chloride dihydrate. The interaction has been studied as a function of temperature, from 2 K to TN=23 K, and applied field, from 0 to 28 kG. The phonon is assigned as a Bg symmetry libration mode, in accord with the predictions of Torrance and Slonczewski; it is found to be "soft," decreasing in energy as T→0. The phonon-magnon coupling constant is nearly field independent but decreases to zero at TN. It is found that no zero-field splitting of the magnon occurs, within 0.2-cm-1 instrumental resolution, in contrast to the 0.8-cm-1 splitting inferred from the infrared spectrum. The magnon g value is determined to be 1.7 ± 0.1, in contrast to Torrance's value of 2.23 ± 0.02. © 1975 The American Physical Society.Spin-flip plus phonon raman scattering: A new second-order scattering process
Physical Review Letters 34:4 (1975) 209-212
Abstract:
A new second-order light scattering process has been observed which yields line spectra at frequency shifts LO±SF, where LO is a longitudinal optical-phonon frequency, and SF is an electron or hole spin-flip frequency. The scattering is highly resonant, and the proposed mechanism is analogous to that for multiple-phonon line spectra and double spin-flip scattering. © 1975 The American Physical Society.LIGHT-SCATTERING STUDY OF PHONON-MAGNON COUPLING IN THE ONE-DIMENSIONAL ANTIFERROMAGNET FeCl2 . 2H2 O.
(1974) 930-934