PHONON SELF-ENERGIES AND 4F-ELECTRON-PHONON INTERACTION IN CECLA1-CF3

被引：29

作者：

AHRENS, K

SCHAACK, G

机构：

[1] Physikalisches Institut der Universität

来源：

PHYSICAL REVIEW LETTERS | 1979年 / 42卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.42.1488

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In CecLa1-cF3 we have observed frequency shifts of optical phonons depending on the concentration c of the 4f ions and on temperature. It is shown that these effects are due to a resonant 4f-electron-phonon interaction via photon-induced virtual quadrupole transitions to excited crystal-field states of Ce3+. These shifts are related to the magnetic phonon splitting of doubly degenerate phonons. Both effects can be quantitatively interpreted with the same coupling constant. © 1979 The American Physical Society.

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页码：1488 / 1491

页数：4

相关论文

共 19 条

[11] MAGNETIC-FIELD DEPENDENT PHONON STATES IN PARAMAGNETIC CEF3 [J].

SCHAACK, G .

SOLID STATE COMMUNICATIONS, 1975, 17 (04) :505-509

[12] OBSERVATION OF CIRCULARLY POLARIZED PHONON STATES IN AN EXTERNAL MAGNETIC-FIELD [J].

SCHAACK, G .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1976, 9 (11) :L297-L301

[13] MAGNETIC-FIELD DEPENDENT SPLITTING OF DOUBLY DEGENERATE PHONON STATES IN ANHYDROUS CERIUM-TRICHLORIDE [J].

SCHAACK, G .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1977, 26 (01) :49-58

[14] MAGNETIC PHONON SPLITTING IN RARE-EARTH TRICHLORIDES [J].

SCHAACK, G .

PHYSICA B & C, 1977, 89 (APR) :195-200

[15]

SCHAACK G, 1976, 3 P INT C LIGHT SCAT, P372

[16] OPTICAL PHONONS OF RARE-EARTH-HALIDES IN A MAGNETIC-FIELD [J].

THALMEIER, P ;

FULDE, P .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1977, 26 (04) :323-328

[17] USE OF DRONE-FERMION REPRESENTATION .2. PHONON SCATTERING BY PARAMAGNETIC IONS [J].

TOOMBS, GA ;

SHEARD, FW .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1973, 6 (09) :1467-1488

[18] INTERBAND EFFECT OF LATTICE VIBRATIONS IN EXCITON ABSORPTION SPECTRA [J].

TOYOZAWA, Y .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1964, 25 (01) :59-&

[19] SOFT PHONONS IN LA - F-BAND INDUCED INSTABILITY [J].

WELING, F .

SOLID STATE COMMUNICATIONS, 1978, 26 (12) :913-917