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Dynamics of Photoinduced Phase Transitions in Low-Dimensional Electron-Lattice Systems

Research Project

Project/Area Number 11215201
Research Category

Grant-in-Aid for Scientific Research on Priority Areas (B)

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionOsaka University Department of Physics (2000-2001)
Tohoku University (1999)

Principal Investigator

OGAWA Tetsuo  Osaka University, Department of Physics, Professor, 大学院・理学研究科, 教授 (50211123)

Project Period (FY) 1999 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥12,200,000 (Direct Cost: ¥12,200,000)
Fiscal Year 2001: ¥4,200,000 (Direct Cost: ¥4,200,000)
Fiscal Year 2000: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 1999: ¥5,500,000 (Direct Cost: ¥5,500,000)
Keywordsphotoinduced phase transitions / electron-lattice systems / spatiotemporal dynamics / domino process / phase separation / finite lifetime / exciton bosonization / 量子常誘電体 / 低次元電子-格子系 / スピノーダル分解 / 格子気体モデル / ドミノ倒し機構 / 断熱近似 / 相分離ダイナミクス / 光誘起構造変化 / 非平衡相転移 / 断熱-透熱クロスオーバー
Research Abstract

(1) THEORY OF PHOTOlNDUCED PHASE TRANSITIONS VIA EXCITED STATES - PHOTOINDUCED DOMINO PROCESS : Photoinduced structural phase transitions via excited electronic states are discussed theoretically using a one-dimensional model composed of localized electrons and lattices under the adiabatic or diabatic approximation. We show that the global structural change by photoexcitation only at a site is possible, and we clarify conditions for the occurrence of such phenomena. Spatiotemporal dynamics of nonequilibrium first-order phase transitions is also investigated in detail in terms of photoinduced nucleation and domino processes of the domain boundaries (domain walls). In the adiabatic regime, after the spontaneous emission of a photon, an initial local structural change (i) remains locally, (ii) induces cooperatively a global structural change, or (iii) disappears and returns to the initial phase, depending on the strength of the interaction between neighboring sites. Dynamical features of … More the case (ii) are characterized by the deterministic domino process ; domain walls between the two phases move deterministically at a constant velocity (with changing speed) without further spontaneous emissions in the case of strong (weak) dissipation. In the diabatic regime, similar three types of structural change exist. The domain-wall dynamics is described as the stochastic domino process, which is accompanied by the successive radiative transitions. A new theoretical treatment is also proposed to study crossover between the adiabatic and diabatic regimes. We also clarify dependence on the friction (energy dissipation rate). We find novel photoinduced domino process in the case of weak friction and strong intersite interaction. In this domino motion the photoexcited site is still in an excited electronic state.
(2) THEORY OF PHASE-SEPARATION DYNAMICS IN FINITE-LIFETIME SYSTEMS : We study theoretically dynamics of the spinodal decomposition in finite-lifetime systems to clarify effects of the interparticle interactions beyond the Ginzburg-Landau-Wilson phenomenology. This is based on the coarse-grained Hamiltonian derived from the interacting lattice-gas model with a finite lifetime. The information of the system is reduced to closed-form coupled integrodifferential equations for the single-point distribution function and the dynamical structure factor. These equations involve explicitly the interparticle interactions. We find quantitatively that the finite lifetime prevents the phase separation and the order formation in the cw creation case. A universal relation between the lifetime and the asymptotic characteristic wavenumber is confirmed numerically.
(3) BOSON THEORY OF MANY-EXCITON SYSTEMS : We derive a bosonized Hamiltonian describing two-exciton correlation of semiconductor-photon coupled systems with a new bosonization method, which takes into full account an effect of deviation of the excitons from ideal bosons. This deviation effect stems from that the excitons are composite particles, whose character appears clearly in the case where the excitons overlap with each other. We call this effect a composite-particle effect (CPE). The Hamiltonian derived in this study includes the results of the previous works as low-order terms of the CPE. After introduction of general theory, of the bosonization method for arbitrary dimension and electron-hole mass ratio, we demonstrate also application to a semiconductor bulk system coupled with a photon field in the heavy-hole limit. The bosonized Hamiltonian shows that the CPE brings about enhancement of exciton-exciton scattering strength and qualitative change of photo-transition amplitude. It is also shown that the Hamiltonian describes two-exciton bound and scattering states.
(4) PHENOMENOLOGICAL THEORY OF PHOTOINDUCED COOPERATIVE PHENOMENA IN QUANTUM PARAELECTRICS : We theoretically study an electron-dipole induced phase transition in photoexcited quantum paraelectrics on the basis of the transverse Ising model taking account of the interaction between a soft-mode phonon-dipole and a photodoped electron-dipole. In accordance with the mean-field approximation, temperature-dependence of dielectric susceptibilities exhibits paraelectric to ferroelectric phase transitions when the concentration of the electron-dipole and the interaction between a phonon-dipole and an electron-dipole take appropriate values. These values separately have lower limits in order to occur phase transitions. We also investigate dependence of dielectric susceptibilities on a uniform electric field. Less

Report

(4 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • 1999 Annual Research Report
  • Research Products

    (47 results)

All Other

All Publications (47 results)

  • [Publications] K.Koshino, T.Ogawa: "Crossover between the adiabatic and diabatic limits in photoinduced cooperative structural changes"J.Korean Phys.Soc.. 34. S21-S24 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K.Koshino, T.Ogawa: "Role of long-range interaction in photoinduced spin-state transitions in spin-crossover complexes"J.Phys.Soc.Jpn.. 68. 2164-2167 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K.Koshino, T.Ogawa: "Stochastic and deterministic domino processes in photoinduced structural changes"J.Phys.Chem.Solids. 60. 1915-1919 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] V.V.Mykhaylovskyy, V.I.Sugakov, K.Koshino, T.Ogawa: "Accelerated motion of photo-induced phase boundary in one-dimensional systems"Solid State Commun.. 113. 321-326 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y.Ogawa, S.Koshihara, K.Koshino, T.Ogawa, C.Urano, H.Takagi: "Dynamical aspects of the photoinduced phase transition in spin-crossover complexes"Phys.Rev.Lett.. 84. 3181-3184 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K.Koshino, T.Ogawa: "Electronic phase conversion by photoinduction of excitations"Phys.Rev.B. 61. 12101-12111 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K. Koshino and T. Ogawa: "Crossover between the adiabatic and diabatic limits in photoinduced cooperative structural changes"J. Korean Phys. Soc.. 34. S21-S24 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K. Koshino and T. Ogawa: "Role of long-range interaction in photoinduced spin-state transitions in spin-crossover complexes"J. Phys. Soc. Jpn.. 68. 2164-2167 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K. Koshino and T. Ogawa: "Stochastic and deterministic domino processes in photoinduced structural changes"J. Phys. Chem. Solids. 60. 1915-1919 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] V. V. Mykhaylovskyy, V. I. Sugakov, K. Koshino, and T. Ogawa: "Accelerated motion of photo-induced phase boundary in one-dimensional systems"Solid State Commun. 113. 321-326 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y. Ogawa, S. Koshihara, K. Koshino, T. Ogawa, C. Urano, and H. Takagi: "Dynamical aspects of the photoinduced phase transition in spin-crossover complexes"Phys. Rev. Lett.. 84. 3181-3184 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K. Koshino and T. Ogawa: "Electronic phase conversion by photoinduction of excitations"Phys. Rev. B. 61. 12101-12111 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] S. Okumura and T. Ogawa: "Bosonized Hamiltonian for excitonic χ(3) responses in semiconductors"J. Lumin.. 87-89. 238-240 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K. Koshino and T. Ogawa: "Theory of the photoinduced spin-state transitions in spin-crossover complexes"J. Lumin.. 87-89. 642-645 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. Ogawa: "Electron-hole and exciton systems in low dimensions"Physics and Applications of Semiconductor Quantum Structures ed. by T. Yao and J. -C. Woo(IOP Publishing, Bristol, 2001). 219-252

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. Ogawa: "Theory of domino processes in photoinduced cooperative phenomena"Mol. Cryst. Liq. Cryst.. 361. 199-207 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] A. Ishikawa, T. Ogawa, and V. I. Sugakov: "Dynamics of spinodal decomposition in finite-lifetime systems"Phys. Rev. B. 64. 144301-1-144301-10 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] V. V. Mykhaylovskyy, T. Ogawa, and V. I. Sugakov: "A new domino mechanism of photoinduced phase transitions in one-dimensional systems : Effect of lattice oscillations in an excited electronic state Ukrainian"J. Phys.. 46. 1097-1103 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] A. V. Nazarenko, T. Ogawa, and V. I. Sugakov: "Nonequilibrium effects on condensation of excitons"Phys. Stat. Sol. (b). 228. 857-868 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K. Koshino and T. Ogawa: "Theoretical study on the photoinduced dynamics in a multistable electronic system"Proceedings of 2000 International Conference on Excitonic Processes in Condensed Matter, (World Scientific, Singapore, 2001). 269-272

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. Ogawa and S. Okumura: "Bosonization of two-fermion composites with an arbitrary internal motion : Application to correlated 1s exciton systems"Proceedings of 2000 International Conference on Excitonic Processes in Condensed Matter, (World Scientific, Singapore, 2001). 348-351

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. Ogawa: "Domino mechanisms in photoinduced phase transitions"Phase Transitions. 74. 93-128 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] S. Okumura and T. Ogawa: "Boson representation of two-exciton correlations : An exact treatment of composite-particle effects"Phys. Rev. B. 65. 035105-1-035105-17 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] A. Ishikawa and T. Ogawa: "Dynamics of spinodal decomposition in finite-lifetime systems : Nonlinear statistical theory based on a coarse-grained lattice-gas model"Phys. Rev. E. 65. 026131-1-026131-10 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] M. Takagiwa and T. Ogawa: "Crossover of optical spectra from an excitonic feature to the Fermi-edge singularity"J. Phys. Chem. Solids. (in print). (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] V. V. Mykhaylovskyy, T. Ogawa, and V. I. Sugakov: "Roles of intersite interactions and energy dissipation in photoinduced phase transitions by domino Mmchanism"Phys. Stat. Sol. (b). (in print). (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] O. Sakai, T. Ogawa, and K. Koshino: "Monte Carlo simulation for the photo-induced low-spin to high-spin state transitions : Difference and similarity with the thermal transition"J. Phys. Soc. Jpn.. (in print). (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] O. Sakai, T. Ogawa, and K. Koshino: "Monte Carlo simulation study on domain formation in the photoinduced low-spin high-spin transition"Phase Transitions. (in print). (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. Luty, T. Ogawa, Y. Okajima, E. Zienkiewicz, H. Cailleau, E. Collet, S. Koshihara, M. -H. Lemee-Cailleau, and M. Buron: "Photo-induced transformations : Three states model"Phase Transitions. (in print). (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. Ogawa: "Theory of the domino dynamics via nonadiabatic transitions"Phase Transitions. (in print). (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y. Okajima and T. Ogawa: "A model of photoinduced regular-dimerized stack transitons"Phase Transitions. (in print). (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] S. Okumura and T. Ogawa: "A new bosonization method for photoexcited electronic states and its application to nonlinear optical responses"Phase Transitions. (in print). (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] A. Ishikawa and T. Ogawa: "Theory of phase separation in finite-lifetime systems"Phase Transitions. (in print). (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T.Ogawa: "Theory of domino processes in photoinduced cooperative phenomena"Molecular Crystals and Liquid Crystals. 361. 199-207 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] A.Ishikawa, T.Ogawa, V.I.Sugakov: "Dynamics of spinodal decomposition in finite-lifetime systems"Physical Review B. 64. 144301 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] V.V.Mykhaylovskyy, T.Ogawa, V.I.Sugakov: "A new domino mechanism of photoinduced phase transitions"Ukrainian Journal of Physics. 46. 1097-1103 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] A.V.Nazarenko, T.Ogawa, V.I.Sugakov: "Nonequilibrium effects on condensation of excitons"Physica Status Solidi (b). 228. 857-868 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] S.Okumura, T.Ogawa: "Boson representation of two-exciton correlations : An exact treatment of composite-particle effects"Physical Review B. 65. 035105 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] A.Ishikawa, T.Ogawa: "Dynamics of spinodal decomposition in finite-lifetime systems : Nonlinear statistical theory based on a coarse-grained lattice-gas model"Physical Review E. 65. 026131 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] Y.Ogawa et.al.: "Dynamical aspects of the photoinduced phase transition complexes in spin-crossover"Physical Review Letters. 84(14). 3181-3184 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Koshino & T.Ogawa: "Electronic phase conversion by photoinduction of excitations"Physical Review B. 61(18). 12101-12111 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Koshino & T.Ogawa: "Theory of the photoinduced spin-state transitions complexes in spin-crossover"Journal of Luminescence. 87. 642-645 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 越野和樹,小川哲生: "光による電子相転移の制御"日本物理学会誌. 55(11). 861-863 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] T.Ogawa: "Domino mechanisms in photoinduced phase transitions"Phase Transitions. (発表予定). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Koshino & T.Ogawa: "Theory of the photoinduced spin-state transitions in spin-crossover complexes"Journal of Luminescence. (発表予定). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Y.Ogawa et al.: "Dynamical aspects of the photoinduced phase transition in spin-crossover complexes"Physical Review Letters. (発表予定). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Koshino & T.Ogawa: "Electronic phase conversion by photoinduction of excitations"Physical Review B.. (発表予定). (2000)

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2018-03-28  

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