Abstract
The electronic-structural modulations of Ir1-xPtxTe2 (0x0.12) have been examined by resonant elastic x-ray scattering (REXS) and resonant inelastic x-ray scattering (RIXS) techniques at both the Ir and Te edges. Charge-density-wave-like superstructures with wave vectors of Q=(1/50-1/5), (1/80-1/8), and (1/60-1/6) are observed on the same sample of IrTe2 at the lowest temperature, the patterns of which are controlled by the cooling speeds. In contrast, superstructures around Q=(1/50-1/5) are observed for doped samples (0.02x0.05). The superstructure reflections persist to higher Pt substitution than previously assumed, demonstrating that a charge-density wave (CDW) can coexist with superconductivity. The analysis of the energy-dependent REXS and RIXS line shape reveals the importance of the Te 5p state rather than the Ir 5d states in the formation of the spatial modulation of these systems. The phase diagram reexamined in this work suggests that the CDW incommensurability may correlate with the emergence of superconducting states such as CuxTiSe2 and LixTaS2.
| Original language | English |
|---|---|
| Article number | 205142 |
| Journal | Physical Review B |
| Volume | 97 |
| Issue number | 20 |
| DOIs | |
| Publication status | Published - 2018 May 31 |
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ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
Cite this
Commensurate versus incommensurate charge ordering near the superconducting dome in Ir1-xPtxTe2 revealed by resonant x-ray scattering. / Takubo, K.; Yamamoto, K.; Hirata, Y.; Wadati, H.; Mizokawa, Takashi; Sutarto, R.; He, F.; Ishii, K.; Yamasaki, Y.; Nakao, H.; Murakami, Y.; Matsuo, G.; Ishii, H.; Kobayashi, M.; Kudo, K.; Nohara, M.
In: Physical Review B, Vol. 97, No. 20, 205142, 31.05.2018.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Commensurate versus incommensurate charge ordering near the superconducting dome in Ir1-xPtxTe2 revealed by resonant x-ray scattering
AU - Takubo, K.
AU - Yamamoto, K.
AU - Hirata, Y.
AU - Wadati, H.
AU - Mizokawa, Takashi
AU - Sutarto, R.
AU - He, F.
AU - Ishii, K.
AU - Yamasaki, Y.
AU - Nakao, H.
AU - Murakami, Y.
AU - Matsuo, G.
AU - Ishii, H.
AU - Kobayashi, M.
AU - Kudo, K.
AU - Nohara, M.
PY - 2018/5/31
Y1 - 2018/5/31
N2 - The electronic-structural modulations of Ir1-xPtxTe2 (0x0.12) have been examined by resonant elastic x-ray scattering (REXS) and resonant inelastic x-ray scattering (RIXS) techniques at both the Ir and Te edges. Charge-density-wave-like superstructures with wave vectors of Q=(1/50-1/5), (1/80-1/8), and (1/60-1/6) are observed on the same sample of IrTe2 at the lowest temperature, the patterns of which are controlled by the cooling speeds. In contrast, superstructures around Q=(1/50-1/5) are observed for doped samples (0.02x0.05). The superstructure reflections persist to higher Pt substitution than previously assumed, demonstrating that a charge-density wave (CDW) can coexist with superconductivity. The analysis of the energy-dependent REXS and RIXS line shape reveals the importance of the Te 5p state rather than the Ir 5d states in the formation of the spatial modulation of these systems. The phase diagram reexamined in this work suggests that the CDW incommensurability may correlate with the emergence of superconducting states such as CuxTiSe2 and LixTaS2.
AB - The electronic-structural modulations of Ir1-xPtxTe2 (0x0.12) have been examined by resonant elastic x-ray scattering (REXS) and resonant inelastic x-ray scattering (RIXS) techniques at both the Ir and Te edges. Charge-density-wave-like superstructures with wave vectors of Q=(1/50-1/5), (1/80-1/8), and (1/60-1/6) are observed on the same sample of IrTe2 at the lowest temperature, the patterns of which are controlled by the cooling speeds. In contrast, superstructures around Q=(1/50-1/5) are observed for doped samples (0.02x0.05). The superstructure reflections persist to higher Pt substitution than previously assumed, demonstrating that a charge-density wave (CDW) can coexist with superconductivity. The analysis of the energy-dependent REXS and RIXS line shape reveals the importance of the Te 5p state rather than the Ir 5d states in the formation of the spatial modulation of these systems. The phase diagram reexamined in this work suggests that the CDW incommensurability may correlate with the emergence of superconducting states such as CuxTiSe2 and LixTaS2.
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U2 - 10.1103/PhysRevB.97.205142
DO - 10.1103/PhysRevB.97.205142
M3 - Article
AN - SCOPUS:85048287492
VL - 97
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 2469-9950
IS - 20
M1 - 205142
ER -