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  • Spin fluctuations and the "strange metal" behavior of a weakly doped antiferromagnet 
    Loktev, V.M.; Turkowski, V. (Condensed Matter Physics, 2008)
    We analyze the spectral properties of a phenomenological model for a weakly doped two-dimensional antiferromagnet, in which the carriers move within one of the two sublattices where they were introduced. Such a constraint ...
  • Spin-fluctuation superconductivity in the Hubbard model 
    Plakida, N.M. (Condensed Matter Physics, 1998)
    The theory of the superconductivity mediated by kinematic and exchange interactions in t−J and two-band Hubbard models in a paramagnetic state is formulated. The Dyson equations for the matrix Green functions in terms of ...
  • Spin Fluids in Homogeneous and Isotropic Space-times 
    Böhmer, C.G.; Bronowski, P. (Український фізичний журнал, 2010)
    We consider a Weyssenhoff fluid assuming that the space-time is homogeneous and isotropic, therefore being relevant for cosmological considerations of gravity theories with torsion. It is explicitly shown that theWeyssenhoff ...
  • Spin Foams and Canonical Quantization 
    Alexandrov, S.; Geiller, M.; Noui, K. (Symmetry, Integrability and Geometry: Methods and Applications, 2012)
    This review is devoted to the analysis of the mutual consistency of the spin foam and canonical loop quantizations in three and four spacetime dimensions. In the three-dimensional context, where the two approaches are in ...
  • Spin-glass magnetic ordering in CoMgGaO₂BO₃ ludwigite 
    Ivanova, N.B.; Platunov, M.S.; Knyazev, Yu.V.; Kazak, N.V.; Bezmaternykh, L.N.; Eremin, E.V.; Vasiliev, A.D. (Физика низких температур, 2012)
    The single crystal needle shape samples of diamagnetically diluted cobalt ludwigite CoMgGaO₂BO₃ have been grown by the flux method. The results of x-ray diffraction and both dc and ac magnetic measurements are presented. ...
  • Spin-glass model with essential short-range competing interactions 
    Sorokov, S.I.; Levitskii, R.R.; Vdovych, A.S. (Condensed Matter Physics, 2005)
    We consider a proton-glass model with an arbitrary range of competing interactions within two-particle cluster approximation for the free energy and within symmetric replica approach. We show that for the thermodynamic ...
  • Spin-lattice effects in selected antiferromagnetic materials (Review Article) 
    Zherlitsyn, S.; Yasin, S.; Wosnitza, J.; Zvyagin, A.A.; Andreev, A.V.; Tsurkan, V. (Физика низких температур, 2014)
    Spin-lattice effects play an important role in many magnetic materials. In this short review, we give some examples of such effects studied in low-dimensional, frustrated as well as uranium-based antiferromagnets. Utilizing ...
  • Spin Magnetism of Finite Length Carbon Nanotubes 
    Klimko, G.T.; Mestechkin, M.M. (Штучний інтелект, 2012)
    We apply the calculation model, which is based on the Hartree-Fock-Racah theory of the averaged quasi-spin multiplet degenerate open shell, to demonstrate that finite zigzag CN hyperbolic levels give rise to a lot of ...
  • Spin models of quasi-1D quantum ferrimagnets with competing interactions 
    Ivanov, N.B. (Condensed Matter Physics, 2009)
    We present a brief survey of the recent theoretical work related to generic Heisenberg spin models describing quasi-one-dimensional quantum ferrimagnets. The emphasis is on quantum chains and ladders with strong competing ...
  • Spin modes in electron Fermi liquid of organic conductors 
    Peschansky, V.G.; Stepanenko, D.I. (Физика низких температур, 2007)
    The propagation of spin waves in Q2D layered conductors placed in a magnetic field is studied. It is shown, that at certain orientations of the magnetic field with respect to the layers the collisionless absorption is ...
  • Spin Nernst effect and intrinsic magnetization in two-dimensional Dirac materials 
    Gusynin, V.P.; Sharapov, S.G.; Varlamov, A.A. (Физика низких температур, 2015)
    We begin with a brief description of the role of the Nernst–Ettingshausen effect in the studies of the hightemperature superconductors and Dirac materials such as graphene. The theoretical analysis of the NE effect is ...
  • Spinoplagioporus minutus (Trematoda, Enenteridae) — паразит химер (Chimaeriformes) Атлантического океана 
    Гаевская, А.В. (Вестник зоологии, 2002)
    Проанализированы особенности морфологии трематоды Spinoplagioporus minutus (Poljansky, 1952), паразитирующей у европейской химеры Chimaera monstrosa, исследованной в трех районах Атлантического океана – от 68° до 22° с. ...
  • Spin-orbit interaction in a generic vortex field transmitted through an elliptic fiber 
    Alexeyev, C.N.; Soskin, M.S.; Volyar, A.V. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2000)
    Any small external perturbation on an ideal round optical fiber induces cross - section deformation and transforms eigen guided vortices into generic vortex fields, which can change their structure and angular momentum. ...
  • Spin-orbit interaction in the supersymmetric antiferromagnetic t-J chain with a magnetic impurity 
    Zvyagin, A.A. (Физика низких температур, 2014)
    The effect of spin-orbit interaction in the strongly correlated exactly solvable electron model with magnetic impurity is studied. The considered magnetic impurity reveals the property of a “mobile” one. It is shown that ...
  • Spin ordered phase transitions in neutron matter under the presence of a strong magnetic field 
    Isayev, A.A.; Yang, J. (Вопросы атомной науки и техники, 2011)
    In dense neutron matter under the presence of a strong magnetic field, considered in the model with the Skyrme effective interaction, there are possible two types of spin ordered states. In one of them the majority of ...
  • 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 ...
  • Spin-phonon interaction in transition-metal difluoride antiferromagnets: Theory and experiment 
    Cottam, M.G.; Lockwood, D.J. (Физика низких температур, 2019)
    An overall comparative study is made of the spin-phonon interactions in several rutile-structure transition-metal difluorides, specifically FeF₂, MnF₂, NiF₂, and CoF₂, in terms of recent developments obtained experimentally ...
  • Spin polarization in semimagnetic semiconductor two barrier spin filters 
    Lev, S.B.; Sugakov, V.I.; Vertsimakha, G.V. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2007)
    The spin-dependent tunneling of electrons through the CdMgTe-based twobarrier resonant tunneling system with a semimagnetic CdMnTe well is studied. The level splitting in the semimagnetic well under an external magnetic ...
  • Spin-polarized electron tunneling between charge-density-wave metals 
    Ekino, T.; Gabovich, A.M.; Voitenko, A.I. (Физика низких температур, 2005)
    For junctions between metals partially gapped by charge density waves (CDWs), the quasiparticle tunnel currents J(V) and conductances G(V) in external magnetic fields H are calculated as functions of H, the bias voltage ...
  • Spin-polarized hydrogen and its isotopes: a rich class of quantum phases (Review Article) 
    Bešlić, I.; Vranješ Markić, L.; Boronat, J. (Физика низких температур, 2013)
    We review the recent activity in the theoretical description of spin-polarized atomic hydrogen and its isotopes at very low temperatures. Spin-polarized hydrogen is the only system in nature that remains stable in the gas ...