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The Institute of Physics ( IOP ) по названию

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  • Wen-Hui Ma; Ming-Sheng Zhang; Li Shun; Yang-Feng Chen; Nai-Ben Ming (1995-11-20)
    PbTiO3 ferroelectric thin films have been prepared on Si(001) by metal-organic chemical vapour deposition. The as-grown films were characterized by scanning electron microscopy, X-ray diffraction and Raman spectroscopy. ...
  • G. V. Oppen (1990-01-01)
    Level crossings of Stark substates with m = 0 differing in reflection parity are considered with respect to the detection of parity violation in atomic physics. An interesting example of a 0+-0- crossing occurs in the ...
  • Shen Hongyuan; Zhou Yuping; Lin Wenxiong; Zeng Ruirong; Yu Guifang; Huang Chenghui; Zeng Zhengdong; Zhang Weijia; Jia Shouquan; Jiang Peizhi; Xiao Chaoliang (1991-04-01)
    Based on accurate values of refractive indices, the phase matching angles (m) and effective nonlinear coefficients (deff) for type I and II sum frequency mixing of 1.0795 and 1.3414 m radiations were calculated in KTP ...
  • E V Stefanovich; A L Shluger (1994-06-06)
    We studied the charge and potential distribution near the (100) GaP surfaces which bear the characteristic features common to polar surfaces of semiconductors. A self-consistent periodic quantum-chemical technique and a ...
  • J Corno; M Lamare; J Simon (1977-11-01)
    A record of the surface wave of optical systems is obtained directly without ambiguity of sign. From the setting proposed by Keilmann (1970) two variants of a same principle have been tested: a method by optical path ...
  • P S Green; T Hubsch (1989-03-01)
    The authors study the triple products of (1,1)-forms for Calabi-Yau manifolds, and derive them in closed form for those that are constructed as smooth hypersurfaces in products of semi-ample complex surfaces, or are complete ...
  • Bing Xu; Yishen Li (1992-05-21)
    The authors consider linear problems associated with the Kadomtsev-Petviashvili equation. They prove that the linear problems are (1+1)-dimensional Hamiltonian systems under the symmetry constraints. Moreover, they find ...
  • J. M. Bang; L. S. Ferreira; E. Maglione (1992-04-15)
    Using three-body wave functions for 11Li, electric-dipole sum rules are calculated and discussed. Energies of the soft dipole mode are found to agree with experimental ones. Both for light and heavy targets, the electric ...
  • Angel Ballesteros; Francisco J Herranz; Preeti Parashar (2000-05-05)
    All Lie bialgebra structures for the (1+1)-dimensional centrally extended Schrödinger algebra are explicitly derived and proved to be of coboundary type. Therefore, since all of them come from a classical r-matrix, the ...
  • Ted Jacobson (1996-08-01)
    The rank-1 sector of classical Ashtekar gravity is considered, motivated by the degeneracy of the metric along the Wilson lines in quantum loop states. It is found that the lines behave like (1 + 1)-dimensional spacetimes ...
  • Sun Xian-ping; Hu Hong-bing; Zeng Xi-zhi; Mao Xi-an (1999-06-01)
    129Xe magnetic resonance imaging in a magnetic field of 4.7 T and at 311 K with laser polarization in the same field is reported. In order to overcome the self-diffusion effect that destroys the transverse magnetization ...
  • W Ewart Williams (1928-10-01)
    The various grades of geometrical optics teaching at King's College, London, are briefly outlined. Experience has shown the Abb method, as developed in Drude's Optics, to be the most instructive method for both the special ...
  • R. Kerkoud; P. Auban-Senzier; D. Jérome; J. M. Lambert; A. Zahab; P. Bernier (1994-02-10)
    We report the measurement of the 13C NMR frequency in K3C60 under pressure. Comparing pressure dependences of the hyperfine spin lattice relaxation rate and of the resonance frequency provides the first determination of ...
  • H. Mayaffre; P. Wzietek; C. Lenoir; D. Jérome; P. Batail (1994-10-20)
    We present 13C NMR measurements carried out under pressure and between 10 and 300 K on a single crystal of the organic superconductor -(ET)2Cu[N(CN)2]Br. Under pressure, the large variation of the Knight shift is interpreted ...
  • G. Quirion; C. Bourbonnais; E. Barthel; P. Auban; D. Jérome; J. M. Lambert; A. Zahab; P. Bernier; C. Fabre; A. Rassat (1993-01-10)
    We report the pressure and temperature dependences of 13C nuclear spin-lattice relaxation time T1 in the normal state of K3C60. From the 1/T1T temperature and pressure profiles, a Fermi-liquid theory is used to investigate ...
  • Anatoly Konechny; Albert Schwarz (1999-09-01)
    We give an explicit expression for classical 1/4-BPS fields in supersymmetric Yang-Mills theory on noncommutative tori. We use it to study quantum 1/4-BPS states. In particular we calculate the degeneracy of 1/4-BPS energy ...
  • R. Blinc; T. Apih; A. Fricelj; J. Dolinek; J. Seliger; A. Fuith; W. Schranz; H. Warhanek; D. C. Ailion (1997-09-15)
    We have directly determined with 14N NMR the SCN head-tail flipping rate in KSCN on going through the order-disorder phase transition at Tc. The results can be explained in terms of an asymmetric double-well potential ...
  • Liang Jian-jun; Chen Wei-de; Wang Yong-qian; Chang Yong; Wang Zhan-guo (2000-10-01)
    Hydrogenated amorphous silicon films co-doped with oxygen (O), boron (B) and phosphorus (P) were fabricated using PECVD technique. The erbium (Er) implanted samples were annealed in a N2 ambient by rapid thermal annealing. ...
  • W C Fon; K Ratnavelu; K M Aggarwal (1995-06-14)
    A 15-state R-matrix calculation has been carried out at 530 energies ranging from the n=2 threshold up to the n=5 threshold at 13.06 eV to map out the resonant profiles for the 1s-2p integral and differential excitation ...
  • W Siegel (1986-03-01)
    The author shows that the previously proposed form of supergravity with 32 off-shell components (instead of the usual 24 for minimal or 40 for non-minimal) is reducible, and represents only a particular coupling of ...