Anomalous electronic, phonon, and spin excitations in the chalcogenide spinel FeCr2S4

K. Y. Choi; P. Lemmens; P. Scheib; V. Gnezdilov; Yu G. Pashkevich; J. Hemberger; A. Loidl; V. Tsurkan

doi:10.1088/0953-8984/19/14/145260

Anomalous electronic, phonon, and spin excitations in the chalcogenide spinel FeCr₂S₄

K. Y. Choi
, P. Lemmens
, P. Scheib
, V. Gnezdilov
, Yu G. Pashkevich
, J. Hemberger
, A. Loidl
, V. Tsurkan

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

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 T_C, (ii) the vanishing of one-magnon excitation close to 0.83 T_C, 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.

Original language	English
Article number	145260
Journal	Journal of Physics Condensed Matter
Volume	19
Issue number	14
DOIs	https://doi.org/10.1088/0953-8984/19/14/145260
State	Published - 11 Apr 2007
Externally published	Yes

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title = "Anomalous electronic, phonon, and spin excitations in the chalcogenide spinel FeCr2S4",

abstract = "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.",

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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 -

Anomalous electronic, phonon, and spin excitations in the chalcogenide spinel FeCr₂S₄

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