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Showing 1 to 6 of 6 for “"niobium diselenide"”.

  1. Raman Scattering From the Superconductor Niobium-Diselenide

    Sooryakumar, RatnasinghamUniversity of Illinois at Urbana-Champaign2015

    At 33 K 2H-NbSe(,2) distorts into an incommensurate charge density wave (CDW) state. The Raman spectrum shows amplitude modes of A and E symmetry near 40 cm('-1) induced by the CDW. At 7 K this material becomes superconducting, and at 2 K we observe additional Raman peaks near 20 cm('-1), one each …

    uiuc Repository record

  2. Raman scattering from the superconductor niobium diselenide

    Sooryakumar, Ratnasingham2011

    Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-20T16:26:56Z No. of bitstreams: 1 1980_sooryakumar.pdf: 4894483 bytes, checksum: b83932506b44613e06df11d7e7ea27fd (MD5)

    uiuc Repository record

  3. THERMAL CONDUCTIVITY OF THIN FILM NIOBIUM DISELENIDE FROM TEMPERATURE-DEPENDENT RAMAN

    Lien, Huai-HsunCornell University2017

    Niobium diselenide (NbSe2) possess a high electrical conductivity and low thermal conductivity, making it a candidate for thermoelectric devices. While the electronic properties of (NbSe2) has been relatively explored, the lateral thermal conductivity for (NbSe2) has remained unknown. In this …

    cornell Repository record

  4. Zero Field Nmr Study on a Spin Glass: Iron-Doped 2hydrogen-Niobium Diselenide

    Chen, Men-CheeUniversity of Illinois at Urbana-Champaign2015

    We have used spin echoes to study the ('93)Nb NQR in 2H-NbSe(,2)Fe(,x). We measured (intensity) x (temperature), and T(,1P) (spin-lattice relaxation parameter) and T(,2) (spin-spin relaxation time) as a function of temperature. Our data reveal dramatic difference between non-spin glass samples (x = …

    uiuc Repository record

  5. Zero field NMR study on a spin glass: Iron-doped 2H-niobium diselenide

    Chen, Men-Chee2011

    We have used spin echoes to study the 93Nb NQR in 2H-NbSe2Fex. We measured (intensity)x(temperature), and T1P (spin-lattice relaxation parameter) and T2 (spin-spin relaxation time) as a function of temperature. Our data reveal dramatic difference between non-spin glass samples (x=O, 0.25%, 1% and …

    uiuc Repository record

  6. Superconductivity and low temperature properties of niobium diselenide single crystals grown by direct vapor transport

    Lewis, NorrisVirginia Polytechnic Institute and State University1976

    … measurements were made of the oxidation state of niobium on the surface and in the bulk of 2H-NbSe₂ samples prepared by the DVT and iodine vapor transport (IVT) procedures. These measurements indicated the niobium on the surface of the IVT samples was more completely oxidized than the niobium on …

    vt Repository record