Raman spectroscopy of SrRuO3 near the paramagnetic-to-ferromagnetic phase transition

被引:81
作者
Iliev, MN [1 ]
Litvinchuk, AP
Lee, HG
Chen, CL
Dezaneti, ML
Chu, CW
Ivanov, VG
Abrashev, MV
Popov, VN
机构
[1] Univ Houston, Texas Ctr Superconduct, Houston, TX 77204 USA
[2] Univ Sofia, Fac Phys, BG-1126 Sofia, Bulgaria
来源
PHYSICAL REVIEW B | 1999年 / 59卷 / 01期
关键词
D O I
10.1103/PhysRevB.59.364
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The polarized Raman spectra of (010)- and (001)-oriented epitaxial thin films of SrRuO3 (space group Pnma, Z=4) are measured between 5 and 300 K. The Raman lines at 123, 225, 252, 291, 361, 390-393, and 412 cm(-1) are assigned to definite modes of A(g) or B-2g symmetry based of their polarization selection rules, the comparison with the results of lattice dynamical calculations (LDC), and accounting for the correlation between the Gamma-point phonons in the Pnma structure and the Gamma-, R-, X-, and M-point phonon modes in the parent Pm (3) over bar m structure. The pronounced anomalies of the Raman phonon parameters near the ferromagnetic transition (T-c=148 K) are discussed in terms of enhanced spin-phonon coupling and reorganization of the electronic states in the vicinity of T-c. [S0163-1829(99)12301-4].
引用
收藏
页码:364 / 368
页数:5
相关论文
共 16 条
  • [1] Raman spectroscopy and lattice-dynamics calculations of mixed layered copper-titanium oxides
    Abrashev, MV
    Thomsen, C
    Popov, VN
    Bozukov, LN
    [J]. PHYSICA C, 1997, 274 (1-2): : 141 - 148
  • [2] [Anonymous], UNPUB
  • [3] JOSEPHSON COUPLING OF YBA2CU3O7-X THROUGH A FERROMAGNETIC BARRIER SRRUO3
    ANTOGNAZZA, L
    CHAR, K
    GEBALLE, TH
    KING, LLH
    SLEIGHT, AW
    [J]. APPLIED PHYSICS LETTERS, 1993, 63 (07) : 1005 - 1007
  • [4] Epitaxial SrRuO3 thin films on (001) SrTiO3
    Chen, CL
    Cao, Y
    Huang, ZJ
    Jiang, QD
    Zhang, Z
    Sun, YY
    Kang, WN
    Dezaneti, LM
    Chu, WK
    Chu, CW
    [J]. APPLIED PHYSICS LETTERS, 1997, 71 (08) : 1047 - 1049
  • [5] CHEN XK, 1995, PHYS REV B, V52, pR1313
  • [6] LATTICE-DYNAMICS OF THE POTENTIAL-INDUCED BREATHING MODEL - PHONON-DISPERSION IN THE ALKALINE-EARTH OXIDES
    COHEN, RE
    BOYER, LL
    MEHL, MJ
    [J]. PHYSICAL REVIEW B, 1987, 35 (11): : 5749 - 5760
  • [7] RAMAN-SCATTERING STUDY AND LATTICE-DYNAMICS INVESTIGATION OF THE NAMNF3 PEROVSKITE
    DANIEL, P
    ROUSSEAU, M
    DESERT, A
    RATUSZNA, A
    GANOT, F
    [J]. PHYSICAL REVIEW B, 1995, 51 (18): : 12337 - 12346
  • [8] SINGLE-CRYSTAL EPITAXIAL THIN-FILMS OF THE ISOTROPIC METALLIC OXIDES SR1-XCAXRUO3 (0-LESS-THAN-OR-EQUAL-TO-X-LESS-THAN-OR-EQUAL-TO-1)
    EOM, CB
    CAVA, RJ
    FLEMING, RM
    PHILLIPS, JM
    VANDOVER, RB
    MARSHALL, JH
    HSU, JWP
    KRAJEWSKI, JJ
    PECK, WF
    [J]. SCIENCE, 1992, 258 (5089) : 1766 - 1769
  • [9] NEUTRON POWDER DIFFRACTION STUDIES OF SR2RUO4 AND SRRUO3
    GARDNER, JS
    BALAKRISHNAN, G
    PAUL, DM
    [J]. PHYSICA C, 1995, 252 (3-4): : 303 - 307
  • [10] THEORY FOR FORCES BETWEEN CLOSED-SHELL ATOMS AND MOLECULES
    GORDON, RG
    KIM, YS
    [J]. JOURNAL OF CHEMICAL PHYSICS, 1972, 56 (06) : 3122 - &