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Перегляд Физика низких температур, 2000, том 26 за назвою

Репозиторій DSpace/Manakin

Перегляд Физика низких температур, 2000, том 26 за назвою

Сортувати за: Порядок: Результатів:

  • On the theory of carrier-induced ferromagnetism in diluted magnetic semiconductors 
    Semenov, Yu.G.; Ryabchenko, S.M. (Физика низких температур, 2000)
    Two different approaches (presented in the literature as alternative approximations) to the problem of carrier-induced ferromagnetism in the system of disordered magnetic ions of a diluted magnetic semiconductor are analyzed. ...
  • Optical spectra of CuO₂ and matrix effect upon its structure 
    Caspary, Nico; Savchenko, Elena V.; Thoma, Anton; Lammers, Andreas; Bondybey, Vladimir E. (Физика низких температур, 2000)
    Optical absorption and laser-induced fluorescence (LIF) spectra of CuO₂ in solid matrices are investigated, and previous visible studies are extended into the infrared. Several new electronic states are observed and their ...
  • Phase fluctuations and pseudogap properties: influence of nonmagnetic impurities 
    Loktev, V.M.; Quick, R.M.; Sharapov, S.G. (Физика низких температур, 2000)
    The presence of nonmagnetic impurities in a 2D “bad” metal depresses the superconducting Berezinskii–Kosterlitz–Thouless transition temperature while leaving the pairing energy scale unchanged. Thus the region of the ...
  • Phonon-assisted anti-Stokes excitation of the fluorescence of Mn²⁺ ions in the CsMnCl₃ ּ 2H₂O crystal 
    Eremenko, V.V.; Fomin, V.I.; Kurnosov, V.S. (Физика низких температур, 2000)
    We demonstrate that anti-Stokes excitation of Mn²⁺ ions in the CsMnCl₃⋅2H₂O crystal can occur through multiphonon addition to the energy of the photons of exciting light. The deficit dE between the energy of the Mn²⁺  ⁴T₁ ...
  • Physical aspects of matrix isolation technique: FTIR studies on CO and CO₂ in O₂ and N₂ matrices 
    Minenko, Maksym; Vetter, Martin; Brodyanski, Alexander P.; Jodl, Hans J. (Физика низких температур, 2000)
    The matrix isolation technique is traditionally used to investigate the properties of the matrix-isolated species themselves or to solve some special questions of the theory of defects in solid. We showed here that the ...
  • Point-contact-spectroscopy investigation of the Kondo size effect in CuCr and AuFe alloys 
    Fisun, V.V.; Yanson, I.K.; Mydosh, J.A.; van Ruitenbeek, J.M. (Физика низких температур, 2000)
    Size effects in Kondo scattering are studied on CuCr and AuFe alloys (TK=2 K and 0.2 K, respectively) by applying point-contact spectroscopy in break-junction type contacts. It is shown that as the contact diameter is ...
  • Properties of solid ³He inclusions embedded in crystalline ⁴He matrix at ultralow temperatures 
    Ganshin, A.; Grigor`ev, V.; Maidanov, V.; Mikhin, N.; Penzev, A.; Polev, A.; Rudavskii, E.; Rybalko, A. (Физика низких температур, 2000)
    A study is made of the kinetic properties of the quantum systems formed in dilute solid mixtures of ³He in ⁴He at ultralow temperatures as a result of the first-order phase transition known as phase separation. The system ...
  • Quantum oscillations in a stack of superconducting cylinders in a magnetic field: crossover from the Aharonov–Bohm to the Little–Parks regime 
    Gvozdikov, V.M. (Физика низких температур, 2000)
    The Aharonov–Bohm (AB) oscillations of the free energy, critical temperature Tc, magnetization M, and magnetic susceptibility χ as functions of the magnetic flux Φ through the hollow in a stack of mesoscopic superconducting ...
  • Reactions of laser-ablated aluminum atoms with nitrogen during condensation at 10 K. Infrared spectra and density functional calculations for Alx Ny molecular 
    Andrews, Lester; Zhou, Mingfei; Chertihin, George V.; Bare, William D.; Hannachi, Yacine (Физика низких температур, 2000)
    Laser-ablated aluminum atoms react with dinitrogen on condensation at 10 K to form N₃ radicals and the subject molecules, which are identified by nitrogen isotopic substitution, further reactions on annealing, and comparison ...
  • Rovibrational transitions and nuclear spin conversion of methane in parahydrogen crystals 
    Miki, Masaaki; Momose, Takamasa (Физика низких температур, 2000)
    Solid parahydrogen is an excellent matrix for matrix-isolation spectroscopy because of its high spectral resolution. Here we describe the rovibrational structure and nuclear spin conversion of CH₄ embedded in parahydrogen ...
  • Sound propagation in liquid He in impurity-helium solids 
    Kiselev, S.I.; Khmelenko, V.V.; Lee, D.M. (Физика низких температур, 2000)
    The observed features of the attenuation of ultrasound in Im–He samples created after the introduction of impurity particles (D₂,N₂, Ne, Kr) in a volume of helium II show that a porous substance consisting of a loosely ...
  • Spectroscopy of yttrium dimers in argon matrices 
    Fang, Li; Chen, Xiaoyu; Shen, Xiaole; Liu, Yifei; Lindsay, D.M.; Lombardi, John R. (Физика низких температур, 2000)
    The absorption and resonance Raman spectra of yttrium dimers (Y₂) in argon matrices are measured for the first time. The absorption spectrum (scattering depletion spectrum SDS) shows a weak, broad transition centered near ...
  • Structure and thermal expansion of the low-temperature phase of SF ₂ 
    Isakina, A.P.; Prokhvatilov, A.I.; Rodriguez-Carvajal, J. (Физика низких температур, 2000)
    Powder x-ray and neutron diffraction studies of the crystalline structure, lattice parameters and thermal expansion coefficients of sulphur hexafluoride SF₆ are performed in the temperature range 1.64-110 K. It is shown ...
  • Structure characteristics of methane-doped solid normal hydrogen 
    Galtsov, N.N.; Prokhvatilov, A.I.; Strzhemechny, M.A. (Физика низких температур, 2000)
    Structure studies of the quantum crystal of solid normal hydrogen doped with methane and deuteromethane are carried out by powder x-ray diffraction within the temperature range 5 to 12 K. The concentration of the dopants ...
  • Superconductors with charge- and spin-density 
    Gabovich, A.M.; Voitenko, A.I. (Физика низких температур, 2000)
    The properties of existing superconductors with electron spectrum instabilities, namely charge-density waves (CDW`s) and spin-density waves (SDW`s), are reviewed. In such substances the supercon-ducting gap exists over the ...
  • Surface electromagnetic modes in layered conductors in a magnetic field 
    Gvozdikov, V.M. (Физика низких температур, 2000)
    A transfer-matrix approach is developed for studies of the collective electromagnetic modes in a semi-infinite layered conductor subjected to a quantizing external magnetic field perpendicular to the layers. The dispersion ...
  • The influence of single magnetic impurities on the conductance of quantum microconstrictions 
    Namiranian, A.; Kolesnichenko, Yu.A.; Omelyanchouk, A.N. (Физика низких температур, 2000)
    The nonlinear ballistic conductance of three-dimensional quantum microconstrictions containing magnetic impurities is investigated. The nonlinear part of the conductance, which is due to the interaction of electrons with ...
  • The quantum conductance of ballistic microconstrictions in metals with an open Fermi surface 
    Namiranian, A.; Kolesnichenko, A. (Физика низких температур, 2000)
    It is shown that the conductance G of a quantum microconstriction in a metal with an open Fermi surface undergoes jumps e²/h of the opposite sign as a function of the contact diameter. The negative jumps are a result of ...
  • Thermal conductivity of solid krypton with methane admixture 
    Dudkin, V.V.; Gorodilov, B.Ya.; Krivchikov, A.I.; Manzhelii, V.G. (Физика низких температур, 2000)
    The thermal conductivity of CH₄–Kr solid solutions is investigated at CH₄ concentrations 0.2–5.0% in the temperature range 1.8–40 K. It is found that the temperature dependence of the thermal conductivity has features ...
  • The theory of equilibrium magnetic properties of the granulated magnetic materials 
    Stefanovskii, E. (Физика низких температур, 2000)
    The present-day analysis of the theoretical adaptation status of the experimental curves of the magnetization and the static magnetic susceptibility as functions of the external parameters H and T (H is an applied external ...

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