Exciton in a phonon field: With a generalized dynamical coherent potential approximation (DCPA)

被引：0
|
作者：
Kato, T [1 ]
Kobayashi, S [1 ]
机构：
[1] Electrotech Lab, Tsukuba, Ibaraki 3058564, Japan
来源：
PROCEEDINGS OF THE THIRD INTERNATIONAL CONFERENCE ON EXCITONIC PROCESSES IN CONDENSED MATTER - EXCON '98 | 1998年 / 98卷 / 25期
关键词：
D O I：
暂无
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
A dynamical coherent potential approximation (DCPA) is formulated within the Hartree approximation for a Frenkel exciton interacting with intramolecular phonons. This method is applied to calculations of two-photon absorption spectra in molecular J-aggregates. The two-photon absorption map and the two-exciton polaron dispersion are compared for pseudoisocyanine J-aggregates. A possibility to observe band-edge lowest two-exciton polarons by the two-photon absorption spectroscopy is pointed out.
引用
收藏
页码：495 / 500
页数：6
相关论文
共 50 条
  • [21] EXCITON-STATE STUDY OF SEMI-MAGNETIC SEMICONDUCTORS BY COHERENT POTENTIAL APPROXIMATION METHOD
    VIVCHARYUK, VN
    GUDYMA, YV
    FIZIKA TVERDOGO TELA, 1985, 27 (11): : 3415 - 3417
  • [22] GENERALIZED COHERENT-POTENTIAL APPROXIMATION FOR SITE-DISORDERED SPIN SYSTEMS
    LAGE, EJS
    STINCHCOMBE, RB
    JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1977, 10 (02): : 295 - 312
  • [23] Coherent acoustic phonon generation in exciton self-trapping
    Morrissey, F. X.
    Dexheimer, S. L.
    PHYSICAL REVIEW B, 2010, 81 (09)
  • [24] Coherent and incoherent aspects of the coupled exciton-phonon system
    Axt, VM
    Siantidis, K
    Herbst, M
    Kuhn, T
    Grosse, S
    Koch, M
    Feldmann, J
    ULTRAFAST PHENOMENA IN SEMICONDUCTORS, 1999, 297-2 : 79 - 86
  • [25] Pronounced exciton and coherent phonon dynamics in BiI3
    Scholz, Mirko
    Oum, Kawon
    Lenzer, Thomas
    PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2018, 20 (16) : 10677 - 10685
  • [26] OPTICAL-SPECTRA OF EXCITON IN THE PHONON FIELD
    TOYOZAWA, Y
    JOURNAL OF LUMINESCENCE, 1984, 31-2 (DEC) : 50 - 55
  • [27] PHONON CALCULATION IN NB-TA AND PD-PT ALLOYS IN COHERENT POTENTIAL APPROXIMATION
    SACCHETTI, F
    SPINELLI, MC
    PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 1975, 72 (02): : 653 - 659
  • [28] PHASE-DIAGRAM OF AN EXCITON IN PHONON FIELD
    SUMI, A
    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1977, 43 (04) : 1286 - 1294
  • [29] EXCITON-PHONON INTERACTION IN LONG-WAVE APPROXIMATION
    FEDYANIN, VK
    MAKHANKOV, VG
    YAKUSHEVICH, LV
    PHYSICS LETTERS A, 1977, 61 (04) : 256 - 258
  • [30] EXACT TEST OF ADIABATIC APPROXIMATION FOR EXCITON-PHONON INTERACTIONS
    SUNA, A
    PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 1971, 45 (02): : 591 - &
12345