Optical and Magneto-Optical Studies on Electronic Structure of CeSb in the Magnetically Ordered States

Kimura, S.; Okuno, Mitsuru; Iwata, Hidehisa; Kitazawa, Hideaki; Kido, G.; Ishiyama, Fumihiko; Sakai, Osamu

doi:10.1143/jpsj.71.2200

Cited by 14 publications

(22 citation statements)

References 30 publications

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“…In R͑͒ for CeSb, with an energy of reflectivity minimum similar to that of CeTe 2 , the optical phonon was not observed. 12 The inset of Fig. 1 displays R͑͒ on a linear scale.…”

Section: Experiments and Resultsmentioning

confidence: 99%

“…At photon energy regimes lower than the reflectivity minimum, R͑͒ was abnormally small compared to that of CeSb and Yb 4 As 3 with low carriers. 12,13 The small reflectivity was due to the anisotropy of the CDW gaps mentioned below. Figure 2 shows the reflectivity spectra, R͑͒, for the E ʈ c axis of CeTe 2 at several temperatures.…”

Section: Experiments and Resultsmentioning

confidence: 99%

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Optical properties of the charge-density-wave compoundCeTe2

Lee

et al. 2008

Phys. Rev. B

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The temperature dependence of the optical conductivity of CeTe 2 was obtained for the E ʈ ab plane and E ʈ c axis at photon energies ranging from terahertz to visible light. Two gap states are found in the optical conductivity spectra. The magnitudes of the gaps are estimated to be 0.448 and 0.109 eV in the E ʈ ab plane. The former is due to perfect nesting, while the latter is due to imperfect nesting. The magnitude of the gap due to perfect nesting on the c axis is evaluated to be 0.854 eV. The Drude response caused by the ungapped Fermi surface is found only on the E ʈ ab plane since CeTe 2 is a quasi-two-dimensional material. The portion of the ungapped Fermi surface across all Fermi surfaces is about 3%.

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“…In R͑͒ for CeSb, with an energy of reflectivity minimum similar to that of CeTe 2 , the optical phonon was not observed. 12 The inset of Fig. 1 displays R͑͒ on a linear scale.…”

Section: Experiments and Resultsmentioning

confidence: 99%

Section: Experiments and Resultsmentioning

confidence: 99%

Optical properties of the charge-density-wave compoundCeTe2

Lee

et al. 2008

Phys. Rev. B

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“…The Sb 5p band is modulated by the magnetic structure and then the energy gap opens at E F . In the figure, two phase diagrams of P-T at B ¼ 0 T 151) and B-T at ambient pressure 142) are also plotted. The phase diagram at 4 GPa is simpler than that at ambient pressure.…”

Section: Ir Spectroscopy Under Multi-extreme Conditionsmentioning

confidence: 99%

“…The legends for the magnetic phase follow the same notation as for neutron scattering. 146) From Kimura et al 142) spectroscopic imaging such as photoemission scanning microscopy 67,152) and IR scanning near-field microscopy. 153) Although the spatial resolution of IR microscopy is much lower than those of the above techniques, IR microscopy can be performed under high pressure and magnetic field, as already discussed.…”

Section: Ir Microspectroscopy and Imaging Under Extreme Conditionsmentioning

confidence: 99%

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Infrared and Terahertz Spectroscopy of Strongly Correlated Electron Systems under Extreme Conditions

Kimura

Okamura

2013

J. Phys. Soc. Jpn.

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Owing to its high brilliance, infrared and terahertz synchrotron radiation (IR/THz-SR) has emerged as a powerful tool for spectroscopy under extreme (i.e., technically more difficult) experimental conditions such as high pressure, high magnetic field, high spatial resolution, and a combination of these. The methodologies for pressure-and magneticfield-dependent spectroscopy and microscopy using IR/THz-SR have advanced rapidly worldwide. By applying them to strongly correlated electron systems (SCESs), many experimental studies have been performed on their electronic structures and phonon/molecular vibration modes under extreme conditions. Here, we review the recent progress of methodologies of IR/THz-SR spectroscopy and microscopy, and the experimental results on SCESs and other systems obtained under extreme conditions.

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