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Перегляд Физика низких температур, 2008, № 04-05 за назвою

Репозиторій DSpace/Manakin

Перегляд Физика низких температур, 2008, № 04-05 за назвою

Сортувати за: Порядок: Результатів:

  • Bose–Einstein condensation in a decorated lattice: an application to the problem of supersolid He 
    Fil, D.V.; Shevchenko, S.I. (Физика низких температур, 2008)
    The Bose–Einstein condensation of vacancies in a three-dimensional decorated lattice is considered. The model describes possible scenario of superfluidity of solid helium, caused by the presence of zero-point vacancies in ...
  • Bubble nucleation in a superfluid ³He–⁴He mixture induced by acoustic wave 
    Abe, H.; Saitoh, Y.; Ueda, T.; Nomura, R.; Okuda, Y.; Burmistrov, S.N. (Физика низких температур, 2008)
    We report the nucleation dynamics of bubbles induced by an acoustic wave pulse in ³He–⁴He liquid mixtures. The experiment was performed for the mixture with ³He fixed concentrations of about 4% and 25% and the pure ...
  • Collective modes in superfluid helium when there is a relative velocity between the normal and superfluid components 
    Adamenko, I.N.; Nemchenko, K.E.; Slipko, V.A.; Wyatt, A.F.G. (Физика низких температур, 2008)
    Collective modes are studied in superfluid helium when the normal and superfluid components have a relative velocity w. In this paper the general dispersion relation for first and second sound modes is obtained for ...
  • Confinement effects on decay rate of surface electron states over liquid helium 
    Sokolov, S.S.; Villas-Boas, J.M.; Monarkha, Yu.P.; Nelson Studart (Физика низких температур, 2008)
    The decay rate of excited states of surface electrons in liquid helium, trapped in a quantum dot system, is evaluated, taking into account the process of spontaneous radiation of two-ripplons with short wavelength. We ...
  • Defects and supersolidity: effects of annealing and stress on elastic behavior of solid ⁴He 
    Syshchenko, A.; Day, J.; Beamish, J. (Физика низких температур, 2008)
    Recent measurements showed that solid ⁴He can decouple from a torsional oscillator below 200 mK and defects appear to be crucial to this behavior. Helium’s shear modulus increases in the same range, which can be understood ...
  • Dip-эффект в проводимости 2D-электронов на пленке гелия с шероховатой подложкой 
    Лейдерер, П.; Назин, С.; Шикин, В. (Физика низких температур, 2008)
    Обсуждается явление под общим названием dip-эффект в проводимости 2D-электронов на пленке гелия с шероховатой подложкой. Рассмотрен частный случай возникновения такого эффекта при движении 2D-электронов вдоль пленки гелия ...
  • Dynamical structure factor of two-dimensional electrons over a helium film 
    Patricia Cristina Venturini; Nelson Studart; Jose Pedro Rino (Физика низких температур, 2008)
    The dynamical structure factor of a two-dimensional electrons trapped to a helium film deposited on a solid substrate is determined through molecular dynamics simulations for different film thicknesses and two substrates. ...
  • Electron attachment to atomic hydrogen on the surface of liquid ⁴He 
    Arai, T.; Yayama, H.; Kono, K. (Физика низких температур, 2008)
    We demonstrate a possibility that helium surface electrons at cryogenic temperatures can be used as a new source of very low energy electrons. Since both electrons (e¯) and hydrogen atoms (H) are bound on liquid helium ...
  • Growth of ³He crystals at different magnetic fields 
    Bueno, J.; Blaauwgeers, R.; Parshin, A.Y.; Jochemsen, R. (Физика низких температур, 2008)
    The experiments on ³He crystal growth are carried out in magnetic field up 9 T. The data were analyzed and compared with the results found at zero magnetic field. It was found that the interface and the crystal lattice couple ...
  • Konstantinov effect in helium II 
    Melnikovsky, L.A. (Физика низких температур, 2008)
    We consider reflection of first and second sound waves by a rigid flat wall in helium II. A nontrivial dependence of the reflection coefficients on the angle of incidence is obtained. Sound conversion is predicted at ...
  • Neutron reflection from a liquid helium surface 
    Charlton, T.R.; Dalgliesh, R.M.; Ganshin, A.; Kirichek, O.; Langridge, S.; McClintock, P.V.E. (Физика низких температур, 2008)
    The reflection of neutrons from a helium surface has been observed for the first time. The ⁴He surface is smoother in the superfluid state at 1.54 K than in the case of the normal liquid at 2.3 K. In the superfluid state we ...
  • Observation of acoustic turbulence in a system of nonlinear second sound waves in superfluid ⁴He 
    Ganshin, A.N.; Efimov, V.B.; Kolmakov, G.V.; McClintock, P.V.E.; Mezhov-Deglin, L.P. (Физика низких температур, 2008)
    We discuss the results of recent studies of acoustic turbulence in a system of nonlinear second sound waves in a high-quality resonator filled with superfluid ⁴He. It was found that, when the driving amplitude was ...
  • On cavitation in liquid helium in a flow due to a vibrating quartz fork 
    Blažková, M.; Schmoranzer, D.; Skrbek, L. (Физика низких температур, 2008)
    Cavitation in normal and superfluid liquid ⁴He at saturated vapor pressure and slightly elevated pressures has been experimentally studied in a flow due to quartz forks vibrating at high amplitudes. Above the temperature- ...
  • Photoresonance and conductivity of surface electrons on liquid ³He 
    Konstantinov, D.; Monarkha, Y.; Kono, K. (Физика низких температур, 2008)
    Resonance variations of the in-plane conductivity of surface electrons (SEs) over liquid ³He induced by microwave (MW) radiation of a fixed frequency are experimentally and theoretically studied for low temperature scattering ...
  • Quantum-limited mass flow of liquid ³He 
    Lambert, G.; Gervais, G.; Mullin, W.J. (Физика низких температур, 2008)
    We consider theoretically the possibility of observing unusual quantum fluid behavior in liquid ³He and solutions of ³He in ⁴He systems confined to nano-channels. In the case of pure ballistic flow at very low temperature ...
  • Search for fourth sound propagation in supersolid ⁴He 
    Aoki, Y.; Lin, X.; Kojima, H. (Физика низких температур, 2008)
    A systematic study was carried out to search for fourth sound propagation solid ⁴He samples below 500 mK down to 40 mK between 25 and 56 bar using the techniques of heat pulse generator and titanium superconducting ...
  • Superfluidity of ⁴He confined in nanoporous media 
    Shirahama, K.; Yamamoto, K.; Shibayama, Y. (Физика низких температур, 2008)
    We have examined superfluid properties of ⁴He confined to a nanoporous Gelsil glass that has nanopores 2.5 nm in diameter. The pressure–temperature phase diagram was determined by torsional oscillator, heat capacity and ...
  • Взаимодействие электромагнитных волн сверхвысокой частоты со сверхтекучим потоком в Не II 
    Рыбалко, А.С.; Рубец, С.П.; Рудавский, Э.Я.; Тихий, В.А.; Головащенко, Р.; Деркач, В.Н.; Тарапов, С.И. (Физика низких температур, 2008)
    Экспериментально исследовано поглощение электромагнитных волн в жидком гелии в области частот 40–200 ГГц и температур 1,4–2,8 К. Проведено регистрирование спектра колебаний мод «шепчущей галереи» диэлектрического дискового ...
  • Двухатомная модель квантового кристалла 
    Полуэктов, Ю.М. (Физика низких температур, 2008)
    В рамках двухатомной модели рассмотрены ангармонические нулевые колебания кристалла. Показано, что амплитуда таких колебаний не может превосходить предельного значения, составляющего некоторую часть межатомного расстояния. ...
  • «Инфракрасные» особенности в полевой теории сверхтекучести и температурные поправки к скоростям первого и второго звуков в гелии ІІ 
    Пашицкий, Э.А.; Вильчинский, С.И.; Чумаченко, А.В. (Физика низких температур, 2008)
    На основе теории возмущений В.Н. Попова, модифицированной для сильновзаимодействующей бозе-системы и свободной от инфракрасных расходимостей, получены поправки высших порядков к собственно энергетическим частям полевой ...

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