Cyclotron resonance and mass enhancement by electron correlation in KFe2As2

Motoi Kimata; Taichi Terashima; Nobuyuki Kurita; Hidetaka Satsukawa; Atsushi Harada; Kouta Kodama; Kanji Takehana; Yasutaka Imanaka; Tadashi Takamasu; Kunihiro Kihou; Chul Ho Lee; Hijiri Kito; Hiroshi Eisaki; Akira Iyo; Hideto Fukazawa; Yoh Kohori; Hisatomo Harima; Shinya Uji

doi:10.1103/PhysRevLett.107.166402

Cyclotron resonance and mass enhancement by electron correlation in KFe₂As₂

Motoi Kimata, Taichi Terashima, Nobuyuki Kurita, Hidetaka Satsukawa, Atsushi Harada, Kouta Kodama, Kanji Takehana, Yasutaka Imanaka, Tadashi Takamasu, Kunihiro Kihou, Chul Ho Lee, Hijiri Kito, Hiroshi Eisaki, Akira Iyo, Hideto Fukazawa, Yoh Kohori, Hisatomo Harima, Shinya Uji

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

Cyclotron resonance (CR) measurements for the Fe-based superconductor KFe₂As₂ are performed. One signal for CR is observed, and is attributed to the two-dimensional α Fermi surface at the Γ point. We found a large discrepancy in the effective masses of CR [(3.4±0.05) m_e (m_e is the free-electron mass)] and de Haas-van Alphen results, a direct evidence of mass enhancement due to electronic correlation. A comparison of the CR and de Haas-van Alphen results shows that both intra- and interband electronic correlations contribute to the mass enhancement in KFe ₂As₂.

Original language	English
Article number	166402
Journal	Physical review letters
Volume	107
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevLett.107.166402
Publication status	Published - 2011 Oct 12
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1103/PhysRevLett.107.166402

Cite this

Kimata, M., Terashima, T., Kurita, N., Satsukawa, H., Harada, A., Kodama, K., Takehana, K., Imanaka, Y., Takamasu, T., Kihou, K., Lee, C. H., Kito, H., Eisaki, H., Iyo, A., Fukazawa, H., Kohori, Y., Harima, H., & Uji, S. (2011). Cyclotron resonance and mass enhancement by electron correlation in KFe₂As₂. Physical review letters, 107(16), [166402]. https://doi.org/10.1103/PhysRevLett.107.166402

Kimata, M, Terashima, T, Kurita, N, Satsukawa, H, Harada, A, Kodama, K, Takehana, K, Imanaka, Y, Takamasu, T, Kihou, K, Lee, CH, Kito, H, Eisaki, H, Iyo, A, Fukazawa, H, Kohori, Y, Harima, H & Uji, S 2011, 'Cyclotron resonance and mass enhancement by electron correlation in KFe₂As₂', Physical review letters, vol. 107, no. 16, 166402. https://doi.org/10.1103/PhysRevLett.107.166402

@article{32a10ff7be4143e6b335006dda34ef32,

title = "Cyclotron resonance and mass enhancement by electron correlation in KFe2As2",

abstract = "Cyclotron resonance (CR) measurements for the Fe-based superconductor KFe2As2 are performed. One signal for CR is observed, and is attributed to the two-dimensional α Fermi surface at the Γ point. We found a large discrepancy in the effective masses of CR [(3.4±0.05) me (me is the free-electron mass)] and de Haas-van Alphen results, a direct evidence of mass enhancement due to electronic correlation. A comparison of the CR and de Haas-van Alphen results shows that both intra- and interband electronic correlations contribute to the mass enhancement in KFe 2As2.",

author = "Motoi Kimata and Taichi Terashima and Nobuyuki Kurita and Hidetaka Satsukawa and Atsushi Harada and Kouta Kodama and Kanji Takehana and Yasutaka Imanaka and Tadashi Takamasu and Kunihiro Kihou and Lee, {Chul Ho} and Hijiri Kito and Hiroshi Eisaki and Akira Iyo and Hideto Fukazawa and Yoh Kohori and Hisatomo Harima and Shinya Uji",

year = "2011",

month = oct,

day = "12",

doi = "10.1103/PhysRevLett.107.166402",

language = "English",

volume = "107",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "16",

}

TY - JOUR

T1 - Cyclotron resonance and mass enhancement by electron correlation in KFe2As2

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 - Kihou, Kunihiro

AU - Lee, Chul Ho

AU - Kito, Hijiri

AU - Eisaki, Hiroshi

AU - Iyo, Akira

AU - Fukazawa, Hideto

AU - Kohori, Yoh

AU - Harima, Hisatomo

AU - Uji, Shinya

PY - 2011/10/12

Y1 - 2011/10/12

N2 - Cyclotron resonance (CR) measurements for the Fe-based superconductor KFe2As2 are performed. One signal for CR is observed, and is attributed to the two-dimensional α Fermi surface at the Γ point. We found a large discrepancy in the effective masses of CR [(3.4±0.05) me (me is the free-electron mass)] and de Haas-van Alphen results, a direct evidence of mass enhancement due to electronic correlation. A comparison of the CR and de Haas-van Alphen results shows that both intra- and interband electronic correlations contribute to the mass enhancement in KFe 2As2.

AB - Cyclotron resonance (CR) measurements for the Fe-based superconductor KFe2As2 are performed. One signal for CR is observed, and is attributed to the two-dimensional α Fermi surface at the Γ point. We found a large discrepancy in the effective masses of CR [(3.4±0.05) me (me is the free-electron mass)] and de Haas-van Alphen results, a direct evidence of mass enhancement due to electronic correlation. A comparison of the CR and de Haas-van Alphen results shows that both intra- and interband electronic correlations contribute to the mass enhancement in KFe 2As2.

UR - http://www.scopus.com/inward/record.url?scp=80053950990&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80053950990&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.107.166402

DO - 10.1103/PhysRevLett.107.166402

M3 - Article

AN - SCOPUS:80053950990

SN - 0031-9007

VL - 107

JO - Physical Review Letters

JF - Physical Review Letters

IS - 16

M1 - 166402

ER -

Cyclotron resonance and mass enhancement by electron correlation in KFe₂As₂

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this