"A Series of Studies on Polarons, Excitons, New Condensed States of Elementary Excitations into the Mechanism of Superconductive-Conjugate Photoconductive Phenomean"

1)超纯卤化银、混合晶体和超导-共轭光导材料的晶体生长和提纯：我们制备了超纯AgClxBr1-x-gt；晶体、超导共轭光导物质Y-BaCuO、La-CuO、BaPbBiO、BiSrCaCuO、NdCe-CuO、BiSrCa(Lay)-CuO，提纯了它们的基本物质Cu2O、Bi2O3.2)在高速高分辨光学实验中发现了基元激发的新凝聚态，证实了AgClxBR&lt；1-x&gt；3)载流子或极化子在交叉强电场和强磁场中的非线性响应、反常分布和动力学；我们新观察到电子-LO声子耦合CO-…的反常减少4)激子和激子引起的超导导光导性及其机理：我们深入而广泛地研究了Y&lt；3-x&gt；-Bax-Cu3-O-z，Ba1-Pbt&lt；1-x&gt；-Bix-O_3、Nd2-Cu1-O4和Bi2-(Sr2Y1)x-Cu2-Oz体系及其基本物质Cu2O、Bi2O_3，从实验上阐明了光电性异常与超导电性的关系。在极性半导体和离子晶体中，我们也观察到了基本激发及其凝聚态的光磁与弛豫的类似关联，我们通过研究Cu2O中极化子在高密度激发下的回旋共振来追求光磁，发现了一种特殊的轨道抗磁性，它通过一种新的光学回旋双谐振法揭示了中间能隙状态的存在。6)超导光电器件的基本概念；我们提出了将超导氧化物和超导共轭光导体或其基本物质Cu2O、Bi2O3组合在一起，构成几种超导光电子器件和器件的可能性。这些项目已获得美国专利。7)极化子、基本激发及其凝聚的非线性响应和动力学的理论研究，以及超导-共轭光导机制的理论研究；我们对半导体中流和聚束现象的能带翘曲效应进行了计算机分析。我们还提出了关于超导-共轭光导机制的假设美国专利(已授予)，美国专利第4,990,487号；日期：1991年2月5日，有效期至2008年2月5日；“超导光电器件”，发明人：Taizo Masumi，受让人：东京大学。USPTO补贴通知，日期为1992年1月24日，美国申请。NO07/696,999：东京大学，发明人：Masumi太藏，发表于：《光导--Y-BA-Cu-O体系的物质及其生产方法》(经修订)。较少

1) Crystal Growth and Refinement of Ultrapure Silver Halides, Mixed Crysitals and of Superconductive-Conjugate Photoconductive Substances ; We have prepared ultrapure AgCl_xBr_<1-x> crystals, a series of superconductive-conjugate photoconductive substances Y-Ba-Cu-O, La-Cu-O, Ba-Pb-Bi-O, Bi-Sr-Ca-Cu-O, Nd-Ce-Cu-O, Bi-SrCa (Lay) -Cu-O systems, and refined their basic substances Cu_2O, Bi_2O_3.2) New Condensed States of Elementary Excitations in High-Speed and Highly-Resolved Optical Experiment ; We have confirmed the two-to one-phonon mode type transformation in AgCl_xBr_<1-x> via FIR reflection spectra, and particularly reexamined the temperature dependence of FIR reflection and optical absorbance of pure Cu_2O in a basic aspect of the superconductive-conjugate phenomena.3) Nonlinear Responses, Anomalous Distribution, and Dynamics of Carriesr or Polarons at Crossed Intense Electric and Magnetic Fields ; We have newly observed an anomalous reduction in the electron-LO phonon coupling co … More nstant in AgCl_xBr_<1-x> and a role of the acoustic phonons in polaron dynamics at the momentum space accumulation in piezoelectric semiconductors Cds.4) Superconductive-Conjugate Photocondutivity due to Ploarons and Excitons and their Mechanism ; We have intensively and extensively examined the conjugative phenomena between photoconductivity and superconductivity of the Y_<3-x>-Ba_x-Cu_3-O_z, Ba_1-Pb_<1-x>-Bi_x-O_3, Nd_2-Cu_1-O_4 and Bi_2-(Sr_2Y_1)_x-Cu_2-O_z systems and their basic substance Cu_2O, Bi_2O_3 to experimentally clarify the correlation between anomalies in photoconductivity and occurrence of superconductivity. We have observed also similar correlation in C_<60> and SrCuO_2.5) Photomagnetism due to Elementary Excitation and their Condensed States with Relaxation in Polar Semiconductors and Ionic Crystals ; We have pursued the photomagnetism by studying cyclotron resonance of polarons in Cu_2O at high density excitations and discovered a peculiar type of orbital diamagnetism which reveals an existence of mid-gap states via a new optical-cyclotron duouble resonance method.6) Basic Concepts of Superconductive Optoelectronic Devices ; We have proposed the possibilities to constitute several of supercon ductive optoelectronic devices and apparatus by combining superconductive oxides and superconductive-conjugate photoconductors close to each other in compositions or their basic substances Cu_2O, Bi_2O_3. United State Patents on these item have been granted.7) Theoretical Studies of Nonlinear Responses and Dyanmics of Polaron, Elementary Excitations and their Condensation, and of the Mechanism of the Superconductive-Conjugate Photoconductivity ; We have given a computer analysis of the band warping effect on the streaming and bunching phenomena in semiconductors. We have also proposed a hypothesis on the mechanism of superconductive-conjugate photoconductivity.United States Patent (Granted), US Patent No. 4, 990, 487 ; Date : Feb. 5th, 1991 valid until Feb. 5, 2008 ; "SUPERCONDUCTIVE OPTOPELECTRONIC DEVICES", Inventor : Taizo Masumi, Assigne : The University of Tokyo.USPTO Notice of Allowance, dated Jan. 24th, 1992, US Appl. No07/696, 999 : THE UNIVERSITY OF TOKYO, Inventor : Taizo Masumi, For : "PHOTOCONDUCTIVE-SUBSTANCE OF THE Y-BA-CU-O SYSTEM AND A METHOD FOR PRODUCING THE SAME"(AS AMENDED). Less