TY - JOUR
T1 - Anomalous electronic, phonon, and spin excitations in the chalcogenide spinel FeCr2S4
AU - Choi, K. Y.
AU - Lemmens, P.
AU - Scheib, P.
AU - Gnezdilov, V.
AU - Pashkevich, Yu G.
AU - Hemberger, J.
AU - Loidl, A.
AU - Tsurkan, V.
PY - 2007/4/11
Y1 - 2007/4/11
N2 - We report inelastic light scattering experiments on FeCr2S 4, which shows colossal magnetoresistance (CMR) effects around T C≈170K. Several distinct features have been observed: (i) anomalies in phonon frequencies and linewidths around TC, (ii) the vanishing of one-magnon excitation close to 0.83 TC, and (iii) the presence of an electronic background at low temperature. This highlights the significance of an intricate interplay among electron, spin, orbital, and lattice degrees of freedom in inducing CMR effects.
AB - We report inelastic light scattering experiments on FeCr2S 4, which shows colossal magnetoresistance (CMR) effects around T C≈170K. Several distinct features have been observed: (i) anomalies in phonon frequencies and linewidths around TC, (ii) the vanishing of one-magnon excitation close to 0.83 TC, and (iii) the presence of an electronic background at low temperature. This highlights the significance of an intricate interplay among electron, spin, orbital, and lattice degrees of freedom in inducing CMR effects.
UR - https://www.scopus.com/pages/publications/33947706807
U2 - 10.1088/0953-8984/19/14/145260
DO - 10.1088/0953-8984/19/14/145260
M3 - Article
AN - SCOPUS:33947706807
SN - 0953-8984
VL - 19
JO - Journal of Physics Condensed Matter
JF - Journal of Physics Condensed Matter
IS - 14
M1 - 145260
ER -