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Перегляд Физика низких температур, 2002, № 07 за датою випуску

Репозиторій DSpace/Manakin

Перегляд Физика низких температур, 2002, № 07 за датою випуску

Сортувати за: Порядок: Результатів:

  • Light scattering on phonons in quasi-one-dimensional antiferromagnet CsFeCl₃·2H₂O induced by magnetic ordering 
    Kurnosov, V.S.; Pashkevich, Yu. G.; Peschanskii, A.V.; Fomin, V.I.; Yeremenko, A.V. (Физика низких температур, 2002)
    The appearance of new phonon lines in the Raman spectrum of the quasi-one-dimensional antiferromagnet CsFeCl₃·2H₂O as a consequence of magnetic ordering with a change of the unit cell volume was detected experimentally. ...
  • Nonlinear optical spectroscopy of epitaxial magnetic garnet films 
    Pavlov, V.V.; Pisarev, R.V.; Fiebig, M.; Fröhlich, D. (Физика низких температур, 2002)
    Second and third harmonic optical spectra are studied in epitaxial magnetic thin films in the spectral ranges 1.7-3.2 eV and 2.4-4.2 eV, respectively. No significant increase of the intensity of the nonlinear spectra is ...
  • Exchange interaction and magnetoresistance in La₂/₃Ca₁/₃MnO₃ : experiment and models 
    Beznosov, A.B.; Belevtsev, B.I.; Fertman, E.L.; Desnenko, V.A.; Naugle, D.G.; Rathnayaka, K.D. D.; Parasiris, A. (Физика низких температур, 2002)
    The magnetization M(T) and electrical resistivity ρ(T) of a La₂/₃Ca₁/₃MnO₃ film have been studied in the temperature range 5 K⩽T⩽320 K in the magnetic field intervals 10 Oe⩽H⩽400 Oe and 0⩽H⩽50 kOe, respectively. It is found ...
  • Optical study of 4f excitations in rare earth cuprates 
    Nekvasil, V. (Физика низких температур, 2002)
    Several recent examples are used to demonstrate that Raman and infrared spectroscopy can be successfully used as a novel experimental tool to study microscopic processes involving 4f electrons in rare earth (RE) cuprates. ...
  • Electronic structure and magneto-optical Kerr effect in the compound UCuP₂ 
    Horpynyuk, O.; Nemoshkalenko, V.V.; Antonov, V.N.; Harmon, B.N.; Yaresko, A.N. (Физика низких температур, 2002)
    The optical and magneto-optical (MO) spectra of the fernary compound UCuP₂ are investigated from first principles, using the fully relativistic Dirac linear-muffin-tin-orbital band structure method and density-functional ...
  • Electronic excitations and correlations in quantum bars 
    Kuzmenko, I.; Gredeskul, S.; Kikoin, K.; Avishai, Y. (Физика низких температур, 2002)
    The spectrum of boson fields and two-point correlators are analyzed in a quantum bar system (a superlattice formed by two crossed interacting arrays of quantum wires), with a short-range interwire interaction. The standard ...
  • Anomalous magnetic and dynamic behavior in magnetoresistive compounds: origin of bulk colossal magnetoresistivity 
    Chechersky, V.; Nath, A. (Физика низких температур, 2002)
    We present the results of our extensive Mössbauer effect studies carried out on a wide variety of mixed valence manganites as well as other types of magnetoresistive materials, including pyrochlore Tl₂Mn₂O₇ and the ...
  • Influence of dissipation on a low-voltage dc current in a long SNS junction 
    Kulinich, S.I.; Shekhter, R.I. (Физика низких температур, 2002)
    The dc current through a voltage-biased long transparent SNS junction in a dissipative regime is considered. The problem under certain conditions is mapped onto exactly solvable model of energy pumping into a quasiballistic ...
  • Specific heat study of magnetic excitations in a one-dimensional S =1 Heisenberg magnet with strong planar anisotropy 
    Feher, A.; Orendáč, M.; Orendáčová, A.; Čižmár, E. (Физика низких температур, 2002)
    The results of experimental studies of the specific heat of the magnetic chain compounds Ni(C₂H₈N₂)₂Ni(CN)₄, Ni(C₁₁H₁₀N₂O)₂Ni(CN)₄, and Ni(C₁₀H₈N₂)₂Ni(CN)₄⋅H₂O are reported. All compounds are identified as S=1 planar ...
  • Magnetic phase transitions in the system La₁₋xBixMnO₃₊λ 
    Troyanchuk, I.O.; Mantytskaja, O.S.; Szymczak, H.; Shvedun, M.Yu. (Физика низких температур, 2002)
    The crystal structure and magnetic properties of the La₁₋xBixMnO₃₊λ system (0⩽x⩽1;λ⩽0.08) are studied as functions of the oxygen and bismuth contents. In oxidized samples La₁₋xBixMnO₃₊λ a phase transition from a ferromagnetic ...
  • Recent progress in magneto-optics and research on its application 
    Norimichi Kojima; Kuniro Tsushima (Физика низких температур, 2002)
    Various kinds of magneto-optical properties are investigated in rare earth orthochromites. From an analysis of Cr³⁺ exciton absorption in RCrO₃ (R=Tb, Dy, and Ho), it is unferred that these compounds exhibit an anomalous ...
  • On the transverse magnetization of the anisotropic superconductor 2H-NbSe₂ 
    Sirenko, V.A.; Makedonska, N.I.; Shabakayeva, Yu. A. (Физика низких температур, 2002)
    Torque measurements were performed on a high-quality single crystal of the uniaxial superconductor 2H-NbSe₂ in a tilted magnetic field 0–200 kG, in the temperature range 1.5–4.2 K. The transverse component of the absolute ...
  • Elementary excitations in solid oxygen 
    Freiman, Yu. A.; Jodl, H.J. (Физика низких температур, 2002)
    Theoretical results on lattice excitations in solid oxygen at equilibrium vapor pressure are reviewed with the emphasis on the behavior of phonons, librons, and magnons in the orientationally and magnetically ordered α ...
  • Spin-phonon interaction and mode softening in NiF₂ 
    Lockwood, D.J. (Физика низких температур, 2002)
    The temperature dependence of the four Raman-active phonons in NiF₂ is investigated at temperatures above and below the antiferromagnetic ordering temperature of TN=73 K. All four modes exhibit distinct anomalies in their ...
  • Electronic Raman scattering through a stripe ordering transition in La₂₋xSrxNiO₄ 
    Gnezdilov, V.P.; Pashkevich, Yu. G.; Yeremenko, A.V.; Lemmens, P.; Güntherodt, G.; Tranquada, J.M.; Buttrey, D.J.; Nakajima, K. (Физика низких температур, 2002)
    We describe the results of electronic Raman scattering experiments in two differently doped single crystals of La₂₋xSrxNiO₄ (x=0.225 and 1/3). In B₁g symmetry a crossover from weakly interacting to pseudogap-like behavior ...

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