Fang, D., Shi, X., Du, Z., Richard, P., Yang, H., Wu, X. X., Zhang, P., Qian, T., Ding, X., Wang, Z., Kim, T. K., Hoesch, M., Wang, A., Chen, X., Hu, J., Ding, H., & Wen, H. H. (2015). Observation of a Van Hove singularity and implication for strong-coupling induced Cooper pairing in KFe2As2. Physical Review B - Condensed Matter and Materials Physics, 92(14), 文章 144513. https://doi.org/10.1103/PhysRevB.92.144513
Fang, Delong ; Shi, Xun ; Du, Zengyi 等. / Observation of a Van Hove singularity and implication for strong-coupling induced Cooper pairing in KFe2As2. 在: Physical Review B - Condensed Matter and Materials Physics. 2015 ; 卷 92, 号码 14.
@article{05e84c1f1e9c4ea3919baf6b5156cd3b,
title = "Observation of a Van Hove singularity and implication for strong-coupling induced Cooper pairing in KFe2As2",
abstract = "Scanning tunneling spectroscopy and angle-resolved photoemission spectroscopy have been investigated on single-crystal samples of KFe2As2. A Van Hove singularity (VHS) has been directly observed just a few meV below the Fermi level (EF) of superconducting KFe2As2, which locates in the middle of the principal axes of the first Brillouin zone. The majority of the density of states at EF, mainly contributed by the proximity effect of the saddle point to EF, is nongapped in the superconducting state. Our observation of the ungapped feature of the density of states due to the VHS points, while providing consistent explanations to many exotic behaviors previously observed in this material, suggests Cooper pairing induced by a strong-coupling mechanism.",
author = "Delong Fang and Xun Shi and Zengyi Du and Pierre Richard and Huan Yang and Wu, {X. X.} and Peng Zhang and Tian Qian and Xiaxin Ding and Zhenyu Wang and Kim, {T. K.} and M. Hoesch and Aifeng Wang and Xianhui Chen and Jiangping Hu and Hong Ding and Wen, {Hai Hu}",
note = "Publisher Copyright: {\textcopyright} 2015 American Physical Society.",
year = "2015",
month = oct,
day = "27",
doi = "10.1103/PhysRevB.92.144513",
language = "English",
volume = "92",
journal = "Physical Review B - Condensed Matter and Materials Physics",
issn = "1098-0121",
publisher = "American Physical Society",
number = "14",
}
Fang, D, Shi, X, Du, Z, Richard, P, Yang, H, Wu, XX, Zhang, P, Qian, T, Ding, X, Wang, Z, Kim, TK, Hoesch, M, Wang, A, Chen, X, Hu, J, Ding, H & Wen, HH 2015, 'Observation of a Van Hove singularity and implication for strong-coupling induced Cooper pairing in KFe2As2', Physical Review B - Condensed Matter and Materials Physics, 卷 92, 号码 14, 144513. https://doi.org/10.1103/PhysRevB.92.144513
Observation of a Van Hove singularity and implication for strong-coupling induced Cooper pairing in KFe2As2. / Fang, Delong
; Shi, Xun; Du, Zengyi 等.
在:
Physical Review B - Condensed Matter and Materials Physics, 卷 92, 号码 14, 144513, 27.10.2015.
科研成果: 期刊稿件 › 文章 › 同行评审
TY - JOUR
T1 - Observation of a Van Hove singularity and implication for strong-coupling induced Cooper pairing in KFe2As2
AU - Fang, Delong
AU - Shi, Xun
AU - Du, Zengyi
AU - Richard, Pierre
AU - Yang, Huan
AU - Wu, X. X.
AU - Zhang, Peng
AU - Qian, Tian
AU - Ding, Xiaxin
AU - Wang, Zhenyu
AU - Kim, T. K.
AU - Hoesch, M.
AU - Wang, Aifeng
AU - Chen, Xianhui
AU - Hu, Jiangping
AU - Ding, Hong
AU - Wen, Hai Hu
N1 - Publisher Copyright:
© 2015 American Physical Society.
PY - 2015/10/27
Y1 - 2015/10/27
N2 - Scanning tunneling spectroscopy and angle-resolved photoemission spectroscopy have been investigated on single-crystal samples of KFe2As2. A Van Hove singularity (VHS) has been directly observed just a few meV below the Fermi level (EF) of superconducting KFe2As2, which locates in the middle of the principal axes of the first Brillouin zone. The majority of the density of states at EF, mainly contributed by the proximity effect of the saddle point to EF, is nongapped in the superconducting state. Our observation of the ungapped feature of the density of states due to the VHS points, while providing consistent explanations to many exotic behaviors previously observed in this material, suggests Cooper pairing induced by a strong-coupling mechanism.
AB - Scanning tunneling spectroscopy and angle-resolved photoemission spectroscopy have been investigated on single-crystal samples of KFe2As2. A Van Hove singularity (VHS) has been directly observed just a few meV below the Fermi level (EF) of superconducting KFe2As2, which locates in the middle of the principal axes of the first Brillouin zone. The majority of the density of states at EF, mainly contributed by the proximity effect of the saddle point to EF, is nongapped in the superconducting state. Our observation of the ungapped feature of the density of states due to the VHS points, while providing consistent explanations to many exotic behaviors previously observed in this material, suggests Cooper pairing induced by a strong-coupling mechanism.
UR - http://www.scopus.com/inward/record.url?scp=84946771878&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.92.144513
DO - 10.1103/PhysRevB.92.144513
M3 - Article
AN - SCOPUS:84946771878
SN - 1098-0121
VL - 92
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 14
M1 - 144513
ER -
Fang D, Shi X, Du Z, Richard P, Yang H, Wu XX 等. Observation of a Van Hove singularity and implication for strong-coupling induced Cooper pairing in KFe2As2. Physical Review B - Condensed Matter and Materials Physics. 2015 10月 27;92(14):144513. doi: 10.1103/PhysRevB.92.144513
