Orbitally-driven insulator-metal transition in CuIr$_2$S$_4$: Temperature dependent transient reflectivity study

M. Naseska; P. Sutar; D. Vengust; S. Tsuchiya; M. Čeh; D. Mihailovic; T. Mertelj

doi:10.1103/PhysRevB.101.165134

Orbitally-driven insulator-metal transition in CuIr$_2$S$_4$: Temperature dependent transient reflectivity study

Strongly Correlated Electrons 2020-04-29 v1

Authors: M. Naseska , P. Sutar , D. Vengust , S. Tsuchiya , M. Čeh , D. Mihailovic , T. Mertelj

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Abstract

Ultrafast transient reflectivity across the unusual three-dimensional Peierls-like insulator-metal (IM) transition in CuIr_{2}S_{4} was measured as a function of temperature. The low-temperature insulating-phase transient response is dominated by broken-symmetry-induced coherent lattice oscillations that abruptly vanish at the IM transition. The coherent mode spectra are consistent with Raman spectra reported in literature. The origin of the broken-symmetry-induced is also briefly discussed.

Keywords

metal-insulator transition phase transitions thermal properties of materials

Cite

@article{arxiv.2002.09327,
  title  = {Orbitally-driven insulator-metal transition in CuIr$_2$S$_4$: Temperature dependent transient reflectivity study},
  author = {M. Naseska and P. Sutar and D. Vengust and S. Tsuchiya and M. Čeh and D. Mihailovic and T. Mertelj},
  journal= {arXiv preprint arXiv:2002.09327},
  year   = {2020}
}

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