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Volumn 81, Issue 15, 2010, Pages

Terahertz responses of the high-temperature metallic phase and photoinduced metallic state in the ferroelectric charge-ordered organic salt α- (ET ) 2 I3

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Indexed keywords


EID: 77955408399     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.81.155111     Document Type: Article
Times cited : (22)

References (37)
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    • Photoinduced changes in σ1 (ω) and ε1 (ω) [ Δ σ1 (ω) and Δ ε1 (ω)] should be calculated from the THz time profile to determine changes in the electronic properties. However, it is difficult to obtain Δ σ1 (ω) and Δ ε1 (ω) because the phase shift in the THz time profile resulting from the PIMT is very small. This small photoinduced phase shift is attributable to the photoinduced HT state formed on the surface layer of thickness approximately 1 μm of the sample, reflecting the large difference between the penetration depth of the pump light (approximately 1.1 μm) and that of the THz probe (the sample thickness of 50 μm). Therefore, we use the absorption change ΔOD to describe the changes in the electronic properties. As described later, Δ σ1 (ω) at 20 K can be calculated using the multilayer model for the result at 20 K, as shown in the inset of Fig
    • Photoinduced changes in σ 1 (ω) and ε 1 (ω) [Δ σ 1 (ω) and Δ ε 1 (ω)] should be calculated from the THz time profile to determine changes in the electronic properties. However, it is difficult to obtain Δ σ 1 (ω) and Δ ε 1 (ω) because the phase shift in the THz time profile resulting from the PIMT is very small. This small photoinduced phase shift is attributable to the photoinduced HT state formed on the surface layer of thickness approximately 1 μ m of the sample, reflecting the large difference between the penetration depth of the pump light (approximately 1.1 μ m) and that of the THz probe (the sample thickness of 50 μ m). Therefore, we use the absorption change Δ OD to describe the changes in the electronic properties. As described later, Δ σ 1 (ω) at 20 K can be calculated using the multilayer model for the result at 20 K, as shown in the inset of Fig..
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    • 0019539913 scopus 로고
    • 10.1016/0040-6090(82)90590-9
    • D. E. Aspnes, Thin Solid Films 89, 249 (1982). 10.1016/0040-6090(82) 90590-9
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  • 34
    • 77955389354 scopus 로고    scopus 로고
    • The Maxwell-Garnett equation should be applicable to the low-density guest particles in the host material. Therefore, εI and εM are exchanged for the high-density metallic region I although the original equation is valid for the low-density region III. For the intermediate region II, Hanai's equation is used
    • The Maxwell-Garnett equation should be applicable to the low-density guest particles in the host material. Therefore, ε I and ε M are exchanged for the high-density metallic region I although the original equation is valid for the low-density region III. For the intermediate region II, Hanai's equation is used.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.