American Institute of Physics: Low-Temperature Physics

Low Temperature Physics

Preface
 Abstract not available. [Low Temp. Phys. 36, 475 (2010)] published Tue Jul 20, 2010.
Magnetic field induced spin reorientation in the strongly anisotropic antiferromagnetic crystal LiCoPO
N. F. Kharchenko, V. M. Khrustalev, and V. N. Savitskii It has been found experimentally that in the strongly anisotropic orthorhombic antiferromagnetic crystal LiCoPO (T=21.7 K) the destruction of antiferromagnetic order by a magnetic field directed along the antiferromagnetism axis H||b occurs in steps by means of three phase transitions: two first-or ... [Low Temp. Phys. 36, 558 (2010)] published Tue Jul 20, 2010.
Magnetoelectricity in the ferrimagnetic CuOSeO: symmetry analysis and Raman scattering study
V. P. Gnezdilov, K. V. Lamonova, Yu. G. Pashkevich, P. Lemmens, H. Berger et al. sublattices ferrimagnet CuOSeO with a cubic symmetry and a linear magnetoelectric effect. There is no spectroscopic evidence for structural lattice distortions below T=60 K, which are expected due to magnetoelectric coupling. Using symmetry arguments we explain this observation by considering a spe ... [Low Temp. Phys. 36, 550 (2010)] published Tue Jul 20, 2010.
Magnetoelectric effect in magnetostriction-piezoelectric multiferroics
M. I. Bichurin and V. M. Petrov The present stage in the study of magnetoelectric (ME) composite multiferroics is analyzed. The ME effect in materials of this kind is due to the magnetostriction and piezoelectric properties of the components. The elastic mechanical interaction between the magnetostriction and piezoelectric phases ... [Low Temp. Phys. 36, 544 (2010)] published Tue Jul 20, 2010.
Light reflection from nonlinear optical dielectric film on a bigyrotropic magnetoelectric substrate at angles close to Brewster angles
Yu. S. Dadoenkova, I. L. Lyubchanskii, Y. P. Lee, and Th. Rasing Light reflection from the interface of a dielectric film, characterized by a cubic optical nonlinearity, on a bigyrotropic substrate magnetoelectric substrate is investigated theoretically. Relations are obtained for the reflection coefficient as a function of the incidence angle of the light for th ... [Low Temp. Phys. 36, 538 (2010)] published Tue Jul 20, 2010.
Symmetry and magnetoelectric interactions in BaMnF
A. K. Zvezdin and A. P. Pyatakov Symmetry analysis is used to study magnetic anisotropy and magnetoelectric interactions in the ferroelectric antiferromagnet BaMnF theoretically. It is shown that symmetry admits the existence in this material of a nonuniform magnetoelectric interaction (flexomagnetoelectric type) with a specific de ... [Low Temp. Phys. 36, 532 (2010)] published Tue Jul 20, 2010.
Charge carrier self-organization in ferroelectromagnetic semiconductors EuCeMnO
E. I. Golovenchits, V. A. Sanina, V. G. Zalesskii, and M. P. Scheglov Giant permittivity (epsilon~10) and ferromagnetism have been observed above 185 K (including room temperature) in single crystals of the dilute semiconductor manganite-ferroelectromagnetic EuCeMnO in the investigations of x-ray diffraction, dielectric and magnetic properties, and conductivity. X-ra ... [Low Temp. Phys. 36, 522 (2010)] published Tue Jul 20, 2010.
Magnetoelectric and magnetoelastic properties of rare-earth ferroborates
A. M. Kadomtseva, Yu. F. Popov, G. P. Vorob'ev, A. P. Pyatakov, S. S. Krotov et al. The magnetic, electric, magnetoelectric, and magnetoelastic properties of rare-earth ferroborates RFe(BO) (R=Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er) as well as yttrium ferroborate YFe(BO) have been studied comprehensively. A strong dependence not only of the magnetic but also magnetoelectric properties ... [Low Temp. Phys. 36, 511 (2010)] published Tue Jul 20, 2010.
Optical spectroscopy of charge transfer transitions in multiferroic manganites, ferrites, and related insulators
A. S. Moskvin and R. V. Pisarev The results of theoretical and experimental studies of charge transfer (CT) transitions in multiferroic manganites, ferrites, and related insulators are reviewed. Starting with a simple cluster model approach one-center p-d and two-center d-d CT transitions, their polarization properties, the role p ... [Low Temp. Phys. 36, 489 (2010)] published Tue Jul 20, 2010.
Progress in studying ferroelectromagnetic crystals
I. E. Chupis A brief review of research performed on ferroelectromagnetic crystals over the 50 years following the discovery of these materials by G. A. Smolenskii and his colleagues is given. During the first decades single crystals and solid solutions of ferrloelectromagnetic substances were synthesized and t ... [Low Temp. Phys. 36, 477 (2010)] published Tue Jul 20, 2010.
Anniversary of the B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine
 Abstract not available. [Low Temp. Phys. 36, 472 (2010)] published Wed Jun 9, 2010.
Spectroscopy and micro-luminescence mapping of Xe-implanted defects in diamond
Y. Deshko and A. A. Gorokhovsky Ion implantation in diamond creates optically active defects which have emission lines in broad spectral regions and may be used in advanced photonics and optical communication applications. A brief review of the photoluminescence properties of Xe ion implanted diamond is presented. The Xe-related c ... [Low Temp. Phys. 36, 465 (2010)] published Wed Jun 9, 2010.
Conformations of ribonucleoside uridine in the low temperature Ar matrices
A. Yu. Ivanov The conformational equilibrium of the ribonucleoside uridine molecules in low-temperature Ar matrices was investigated by the FTIR matrix isolation spectroscopy and quantum-chemical calculations at the DFT and MP2 levels of theory. It was established that conformers with a carbonyl group C2O, which ... [Low Temp. Phys. 36, 458 (2010)] published Wed Jun 9, 2010.
Unveiled optical properties of tetrapyrollic pigments in cryogenic environments
C. Crepin, N. Shafizadeh, W. Chin, J.-P. Galaup, J. G. McCaffrey et al. An unexpected phenomenon was revealed in the laser induced fluorescence spectra of free-base (HPc) and zinc (ZnPc) phthalocyanines trapped in rare gas and nitrogen matrices under a moderate increase in the laser intensity. In all matrices the intensity of an emission band near 755 nm increased dras ... [Low Temp. Phys. 36, 451 (2010)] published Wed Jun 9, 2010.
Single-molecule probing of incommensurate biphenyl
M. Pars, V. Palm, and J. Kikas Our data on the distribution of purely electronic linewidths of single molecules of terrylene in incommensurate biphenyl crystals are compared with the data obtained by other groups for different low-temperature organic solid hosts and with results of numerical simulations. The first two moments of ... [Low Temp. Phys. 36, 448 (2010)] published Wed Jun 9, 2010.
Study of cluster formation in low-temperature systems. Spectral manifestation of resonance dipoledipole interactions between nondipole polyatomic molecules
A. N. Cherevatova, V. N. Bocharov, T. D. Kolomiitsova, D. N. Shchepkin, and K. G. Tokhadze Resonance dipole-dipole interactions are shown to strongly manifest themselves in fundamental and overtone band shapes of low-temperature systems consisting of polar and nonpolar molecules as well with a relatively large first derivatives (P>0.3 D) of the dipole moment. A rough model on the basis o ... [Low Temp. Phys. 36, 439 (2010)] published Wed Jun 9, 2010.
Lattice phonons of solid phases (alpha,beta,delta,epsilon) of carbon monoxide by optical studies
A. Serdyukov, M. Vetter, A. Brodyanski, and H. J. Jodl The phase diagram of solid carbon monoxide was investigated in the pressure range 010 GPa and temperature range 30300 K by infrared and Raman spectroscopy. The tentative phase diagram known from the literature was expanded and specified in detail. The delta-phase region is divided into two subphas ... [Low Temp. Phys. 36, 424 (2010)] published Wed Jun 9, 2010.
Crystal field splitting on D<-->S transitions of atomic manganese isolated in solid krypton
O. Byrne, M. A. Collier, M. C. Ryan, and J. G. McCaffrey Narrow excitation features present on the [Ar]3d4saD<--[Ar]3d4saS transitions of manganese atoms isolated in solid Kr are analyzed within the framework of weak crystal field splitting. Use of the W optical lineshape function allowed identification of multiple zero-phonon lines for individual spin-or ... [Low Temp. Phys. 36, 417 (2010)] published Wed Jun 9, 2010.
Ionmolecule reactions of CoAr with nitrogen oxides NO, NO, and NO: measuring absolute pressure by shock-freezing of the collision complex
C. van der Linde, R. F. Hockendorf, O. P. Balaj, and M. K. Beyer A new method to determine the absolute pressure in an ultra-high vacuum apparatus is tested using ion molecule reactions with CoAr. In a collision with a neutral reactant the complex between Co and the collision partner is stabilized by evaporation of argon atoms. If CoAr reacts at the collision rat ... [Low Temp. Phys. 36, 411 (2010)] published Wed Jun 9, 2010.
Formation of (XeH) centers in solid Xe via recombination: nonstationary luminescence and internal electron emission
E. V. Savchenko, I. V. Khyzhniy, S. A. Uyutnov, G. B. Gumenchuk, A. N. Ponomaryov et al. The formation of excimers (XeH) in solid Xe doped with molecular hydrogen under irradiation by an electron beam is studied using the original two-stage technique of nonstationary (NS) cathodoluminescence (CL) in combination with current activation spectroscopythermally stimulated exoelectron emissio ... [Low Temp. Phys. 36, 407 (2010)] published Wed Jun 9, 2010.
Local formation of HArF in solid argon: Low-temperature limit and thermal activation
H. Lignell, L. Khriachtchev, A. Lignell, and M. Rasanen The H+Ar+F reaction leading to HArF formation in an argon matrix is studied at temperatures down to 8 K. The effects of the precursor concentration, deuteration, IR light, and deposition temperature as well as thermal activation of this reaction are studied. It is found that HArF molecules are form ... [Low Temp. Phys. 36, 400 (2010)] published Wed Jun 9, 2010.