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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Hu J., Liu X., Yue C. L., Liu J. Y., Zhu H. W., He J. B., Wei J., Mao Z. Q., Antipina, L. Yu., Popov Z. I., Sorokin P.B., Liu T.J., Adams P.W., Radmanesh S. M. A., Spinu L., Ji H., Natelson D.
Заглавие : Enhanced electron coherence in atomically thin Nb3SiTe6
Коллективы : US National Science Foundation [DMR-1205469], NSF EPSCoR Cooperative Agreement [EPS-1003897], Louisiana Board of Regents; US Department of Energy, Office of Science, Basic Energy Sciences [DE-FG02-07ER46420], Russian Science Foundation [14-12-01217], Russian Federation [MK-6218.2015.2, 14.Z56.15.6218-MK], Leading Science School program [NSh-2886.2014.2], US Department of Energy, Office of Science, Basic Energy Sciences award [DE-FG02-06ER46337], US National Science Foundation under the NSF EPSCoR Cooperative Agreement [EPS-1003897]
Место публикации : Nat. Phys. - 2015. - Vol. 11, Is. 6. - P.471-476. - ISSN 1745, DOI 10.1038/NPHYS3321. - ISSN 17452481(eISSN)
Примечания : Cited References:38. - The authors are grateful to J. DiTusa for informative discussions. The work at Tulane is supported by the US National Science Foundation under grant DMR-1205469 and the NSF EPSCoR Cooperative Agreement No. EPS-1003897, with additional support from the Louisiana Board of Regents. P.W.A. and T.J.L. acknowledge the support of the US Department of Energy, Office of Science, Basic Energy Sciences, under Award No. DE-FG02-07ER46420. L.Y.A. and P.B.S. acknowledge the support of the Russian Science Foundation (project #14-12-01217) and are grateful to the Joint Supercomputer Center of the Russian Academy of Sciences and 'Lomonosov' Research Computing Center for the opportunity of using a cluster computer for the quantum-chemical calculations. P.B.S. acknowledges a Grant of the President of the Russian Federation for government support of young PhD scientists MK-6218.2015.2 (project ID 14.Z56.15.6218-MK). Z.I.P. acknowledges the support of the Leading Science School program (No NSh-2886.2014.2). D.N. and H.J. acknowledge support through the US Department of Energy, Office of Science, Basic Energy Sciences award DE-FG02-06ER46337. The work at UNO is supported by the US National Science Foundation under the NSF EPSCoR Cooperative Agreement No. EPS-1003897, with additional support from the Louisiana Board of Regents.
Предметные рубрики: PHONON SCATTERING RATES
WEAK-LOCALIZATION
METAL-FILMS
Аннотация: It is now well established that many of the technologically important properties of two-dimensional (2D) materials, such as the extremely high carrier mobility in graphene(1) and the large direct band gaps in MoS2 monolayers(2), arise from quantum confinement. However, the influence of reduced dimensions on electron-phonon (e-ph) coupling and its attendant dephasing effects in such systems has remained unclear. Although phonon confinement(3-7) is expected to produce a suppression of e-ph interactions in 2D systems with rigid boundary conditions(6,7), experimental verification of this has remained elusive(8). Here, we show that the e-ph interaction is, indeed, modified by a phonon dimensionality crossover in layered Nb3SiTe6 atomic crystals. When the thickness of the Nb3SiTe6 crystals is reduced below a few unit cells, we observe an unexpected enhancement of the weak-antilocalization signature in magnetotransport. This finding strongly supports the theoretically predicted suppression of e-ph interactions caused by quantum confinement of phonons.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Izotov A. V.
Заглавие : FMR study of the anisotropic properties of an epitaxial Fe3Si film on a Si(111) vicinal surface
Место публикации : JETP Letters. - 2016. - Vol. 103, Is. 1. - P.41-45. - ISSN 00213640 (ISSN), DOI 10.1134/S0021364016010033
Примечания : Cited References: 28
Предметные рубрики: Thin magnetic-films
Ferromagnetic-resonance
Cobalt films
Metal-films
Spectrometer
Spintronics
Roughness
Аннотация: The anisotropic characteristics of an iron silicide (Fe3Si) epitaxial thin magnetic film grown on a Si(111) silicon vicinal surface with a misorientation angle of 0.14° have been measured by the ferromagnetic resonance method. It has been shown that the polar and azimuth misorientation angles of the crystallographic plane of the substrate can be determined simultaneously from the angular dependences of the ferromagnetic resonance field of the epitaxial film. The effective saturation magnetization of the film M eff = 1105 G and the constant of the cubic magnetocrystalline anisotropy K 4 = 1.15 × 105 erg/cm3 have been determined. The misorientation of the substrate plane leads to the formation of steps on the film surface and, as a result, to the appearance of uniaxial magnetic anisotropy of the magnetic dipole nature with the constant K 2 = 796 erg/cm3. Small unidirectional magnetic anisotropy (K 1 = 163 erg/cm3), which may be associated with symmetry breaking on the steps of the film and is due to the Dzyaloshinskii–Moriya interaction, has been detected.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Frolov G. I., Zhigalov V. S., Polskii A. I., Pozdnyakov V. G.
Заглавие : Study of electroconductivity in cobalt nanocrystalline films
Место публикации : Fiz. Tverd. Tela: MEZHDUNARODNAYA KNIGA, 1996. - Vol. 38, Is. 4. - P1208-1213. - ISSN 0367-3294
Примечания : Cited References: 13
Предметные рубрики: METAL-FILMS
RESISTIVITY
CONDUCTION
ELECTRONS
DENSITY
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