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Phonon spectrum and soft-mode behavior of MgCNi_3
R. Heid, B. Renker, H. Schober +3
Temperature dependent inelastic neutron-scattering measurements of the generalized phonon density-of-states for superconducting MgCNi_3, T_c=8 K, give evidence for a soft-mode beha…
High-Resolution Thermal Expansion of MgB2
R. Lortz, C. Meingast, D. Ernst +3
The thermal expansion of polycrystalline MgB2 from 5-300 K is studied using high-resolution capacitance dilatometry. The thermal expansivity exhibits a small jump of -5.8x10-8 K-1…
Lattice dynamics and electron-phonon coupling in transition metal diborides
R. Heid, B. Renker, H. Schober +3
The phonon density-of-states of transition metal diborides TMB2 with TM = Ti, V, Ta, Nb and Y has been measured using the technique of inelastic neutron scattering. The experimenta…
LiBC - A prevented superconductor
B. Renker, H. Schober, P. Adelmann +3
We have investigated the lattice dynamics of LiBC. Experimental Raman and inelastic neutron scattering results are confronted with density functional calculations. The excellent ag…