Fermi-surface topology and low-lying electronic structure of the iron-based superconductor Ca 10(Pt 3As 8)(Fe 2As 2) 5

Madhab Neupane; Chang Liu; Su Yang Xu; Yung Jui Wang; Ni Ni; J. M. Allred; L. A. Wray; N. Alidoust; Hsin Lin; R. S. Markiewicz; A. Bansil; R. J. Cava; M. Z. Hasan

doi:10.1103/PhysRevB.85.094510

Fermi-surface topology and low-lying electronic structure of the iron-based superconductor Ca ₁₀(Pt ₃As ₈)(Fe ₂As ₂) ₅

Madhab Neupane, Chang Liu, Su Yang Xu, Yung Jui Wang, Ni Ni, J. M. Allred, L. A. Wray, N. Alidoust, Hsin Lin, R. S. Markiewicz, A. Bansil, R. J. Cava, M. Z. Hasan

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

38 Scopus citations

Abstract

We report a study of low-energy electronic structure and Fermi surface topology for the recently discovered iron-based superconductor Ca ₁₀(Pt ₃As ₈)(Fe ₂As ₂) ₅ (the 10-3-8 phase, with T _c∼8 K), via angle-resolved photoemission spectroscopy (ARPES). Despite its triclinic crystal structure, ARPES results reveal a fourfold symmetric band structure with the absence of Dirac-cone-like Fermi dots (related to magnetism) found around the Brillouin zone corners in other iron-based superconductors. Considering that the triclinic lattice and structural supercell arise from the Pt ₃As ₈ intermediary layers, these results indicate that those layers couple only weakly to the FeAs layers in this new superconductor at least near the surface, which has implications for the determination of its pairing mechanism.

Original language	English (US)
Article number	094510
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	85
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevB.85.094510
State	Published - Mar 20 2012

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1103/PhysRevB.85.094510

Cite this

Neupane, M., Liu, C., Xu, S. Y., Wang, Y. J., Ni, N., Allred, J. M., Wray, L. A., Alidoust, N., Lin, H., Markiewicz, R. S., Bansil, A., Cava, R. J., & Hasan, M. Z. (2012). Fermi-surface topology and low-lying electronic structure of the iron-based superconductor Ca ₁₀(Pt ₃As ₈)(Fe ₂As ₂) ₅ Physical Review B - Condensed Matter and Materials Physics, 85(9), Article 094510. https://doi.org/10.1103/PhysRevB.85.094510

@article{03d757db157246f989972923151826b0,

title = "Fermi-surface topology and low-lying electronic structure of the iron-based superconductor Ca 10(Pt 3As 8)(Fe 2As 2) 5 ",

abstract = "We report a study of low-energy electronic structure and Fermi surface topology for the recently discovered iron-based superconductor Ca 10(Pt 3As 8)(Fe 2As 2) 5 (the 10-3-8 phase, with T c∼8 K), via angle-resolved photoemission spectroscopy (ARPES). Despite its triclinic crystal structure, ARPES results reveal a fourfold symmetric band structure with the absence of Dirac-cone-like Fermi dots (related to magnetism) found around the Brillouin zone corners in other iron-based superconductors. Considering that the triclinic lattice and structural supercell arise from the Pt 3As 8 intermediary layers, these results indicate that those layers couple only weakly to the FeAs layers in this new superconductor at least near the surface, which has implications for the determination of its pairing mechanism.",

author = "Madhab Neupane and Chang Liu and Xu, {Su Yang} and Wang, {Yung Jui} and Ni Ni and Allred, {J. M.} and Wray, {L. A.} and N. Alidoust and Hsin Lin and Markiewicz, {R. S.} and A. Bansil and Cava, {R. J.} and Hasan, {M. Z.}",

year = "2012",

month = mar,

day = "20",

doi = "10.1103/PhysRevB.85.094510",

language = "English (US)",

volume = "85",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "1098-0121",

publisher = "American Physical Society",

number = "9",

}

Neupane, M, Liu, C, Xu, SY, Wang, YJ, Ni, N, Allred, JM, Wray, LA, Alidoust, N, Lin, H, Markiewicz, RS, Bansil, A, Cava, RJ & Hasan, MZ 2012, 'Fermi-surface topology and low-lying electronic structure of the iron-based superconductor Ca ₁₀(Pt ₃As ₈)(Fe ₂As ₂) ₅ ', Physical Review B - Condensed Matter and Materials Physics, vol. 85, no. 9, 094510. https://doi.org/10.1103/PhysRevB.85.094510

TY - JOUR

T1 - Fermi-surface topology and low-lying electronic structure of the iron-based superconductor Ca 10(Pt 3As 8)(Fe 2As 2) 5

AU - Neupane, Madhab

AU - Liu, Chang

AU - Xu, Su Yang

AU - Wang, Yung Jui

AU - Ni, Ni

AU - Allred, J. M.

AU - Wray, L. A.

AU - Alidoust, N.

AU - Lin, Hsin

AU - Markiewicz, R. S.

AU - Bansil, A.

AU - Cava, R. J.

AU - Hasan, M. Z.

PY - 2012/3/20

Y1 - 2012/3/20

N2 - We report a study of low-energy electronic structure and Fermi surface topology for the recently discovered iron-based superconductor Ca 10(Pt 3As 8)(Fe 2As 2) 5 (the 10-3-8 phase, with T c∼8 K), via angle-resolved photoemission spectroscopy (ARPES). Despite its triclinic crystal structure, ARPES results reveal a fourfold symmetric band structure with the absence of Dirac-cone-like Fermi dots (related to magnetism) found around the Brillouin zone corners in other iron-based superconductors. Considering that the triclinic lattice and structural supercell arise from the Pt 3As 8 intermediary layers, these results indicate that those layers couple only weakly to the FeAs layers in this new superconductor at least near the surface, which has implications for the determination of its pairing mechanism.

AB - We report a study of low-energy electronic structure and Fermi surface topology for the recently discovered iron-based superconductor Ca 10(Pt 3As 8)(Fe 2As 2) 5 (the 10-3-8 phase, with T c∼8 K), via angle-resolved photoemission spectroscopy (ARPES). Despite its triclinic crystal structure, ARPES results reveal a fourfold symmetric band structure with the absence of Dirac-cone-like Fermi dots (related to magnetism) found around the Brillouin zone corners in other iron-based superconductors. Considering that the triclinic lattice and structural supercell arise from the Pt 3As 8 intermediary layers, these results indicate that those layers couple only weakly to the FeAs layers in this new superconductor at least near the surface, which has implications for the determination of its pairing mechanism.

UR - http://www.scopus.com/inward/record.url?scp=84859022866&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84859022866&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.85.094510

DO - 10.1103/PhysRevB.85.094510

M3 - Article

AN - SCOPUS:84859022866

SN - 1098-0121

VL - 85

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 9

M1 - 094510

ER -

Fermi-surface topology and low-lying electronic structure of the iron-based superconductor Ca ₁₀(Pt ₃As ₈)(Fe ₂As ₂) ₅

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this