TY - JOUR
T1 - Cyclotron resonance in Fe-based superconductor KFe2As 2
AU - Kimata, Motoi
AU - Terashima, Taichi
AU - Kurita, Nobuyuki
AU - Satsukawa, Hidetaka
AU - Harada, Atsushi
AU - Kodama, Kouta
AU - Takehana, Kanji
AU - Imanaka, Yasutaka
AU - Takamasu, Tadashi
AU - Kiho, Kunihiro
AU - Lee, Chul Ho
AU - Kito, Hijiri
AU - Eisaki, Hiroshi
AU - Iyo, Akira
AU - Fukazawa, Hideo
AU - Kohori, Yoh
AU - Harima, Hisatomo
AU - Uji, Shinya
N1 - Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2012
Y1 - 2012
N2 - We report cyclotron resonance (CR) measurements for the Fe-based superconductor KFe2As2. Only one series of CR with an effective mass of 3.4me (me is the free electron mass) is observed. The CR signal is attributed to the quasi-two-dimensional α Fermi surface at the Γ point. Our main finding is that the effective mass obtained from the CR is significantly smaller than that obtained from the de-Haas van Alphen (dHvA) measurements. This is the direct evidence of the mass enhancement by electronic correlation. A comparison between the CR and dHvA measurements shows that both intra- and interband electronic correlations contribute to the mass enhancement in KFe2As2.
AB - We report cyclotron resonance (CR) measurements for the Fe-based superconductor KFe2As2. Only one series of CR with an effective mass of 3.4me (me is the free electron mass) is observed. The CR signal is attributed to the quasi-two-dimensional α Fermi surface at the Γ point. Our main finding is that the effective mass obtained from the CR is significantly smaller than that obtained from the de-Haas van Alphen (dHvA) measurements. This is the direct evidence of the mass enhancement by electronic correlation. A comparison between the CR and dHvA measurements shows that both intra- and interband electronic correlations contribute to the mass enhancement in KFe2As2.
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U2 - 10.1088/1742-6596/400/2/022054
DO - 10.1088/1742-6596/400/2/022054
M3 - Conference article
AN - SCOPUS:84873653418
VL - 400
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - PART 2
M1 - 022054
T2 - 26th International Conference on Low Temperature Physics, LT 2011
Y2 - 10 August 2011 through 17 August 2011
ER -