Prediction of double-Weyl points in the iron-based superconductor CaKFe4As4

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Prediction of double-Weyl points in the iron-based superconductor CaKFe4As4. / Heinsdorf, Niclas; Christensen, Morten H.; Iraola, Mikel; Zhang, Shang-Shun; Yang, Fan; Birol, Turan; Batista, Cristian D.; Valenti, Roser; Fernandes, Rafael M.

I: Physical Review B, Bind 104, Nr. 7, 075101, 03.08.2021.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt

Harvard

Heinsdorf, N, Christensen, MH, Iraola, M, Zhang, S-S, Yang, F, Birol, T, Batista, CD, Valenti, R & Fernandes, RM 2021, 'Prediction of double-Weyl points in the iron-based superconductor CaKFe4As4', Physical Review B, bind 104, nr. 7, 075101. https://doi.org/10.1103/PhysRevB.104.075101

APA

Heinsdorf, N., Christensen, M. H., Iraola, M., Zhang, S-S., Yang, F., Birol, T., Batista, C. D., Valenti, R., & Fernandes, R. M. (2021). Prediction of double-Weyl points in the iron-based superconductor CaKFe4As4. Physical Review B, 104(7), [075101]. https://doi.org/10.1103/PhysRevB.104.075101

Vancouver

Heinsdorf N, Christensen MH, Iraola M, Zhang S-S, Yang F, Birol T o.a. Prediction of double-Weyl points in the iron-based superconductor CaKFe4As4. Physical Review B. 2021 aug. 3;104(7). 075101. https://doi.org/10.1103/PhysRevB.104.075101

Author

Heinsdorf, Niclas ; Christensen, Morten H. ; Iraola, Mikel ; Zhang, Shang-Shun ; Yang, Fan ; Birol, Turan ; Batista, Cristian D. ; Valenti, Roser ; Fernandes, Rafael M. / Prediction of double-Weyl points in the iron-based superconductor CaKFe4As4. I: Physical Review B. 2021 ; Bind 104, Nr. 7.

Bibtex

@article{58012bce66ca4e388faa6ae60343edc6,
title = "Prediction of double-Weyl points in the iron-based superconductor CaKFe4As4",
abstract = "Employing a combination of symmetry analysis, low-energy modeling, and ab initio simulations, we predict the presence of magnetic-field-induced Weyl points close to the Fermi level in CaKFe4As4. Depending on the relative strengths of the magnetic field and of the spin-orbit coupling, the Weyl fermions can carry a topological charge of +/- 1 or +/- 2, making CaKFe4As4 a rare realization of a double-Weyl semimetal. We further predict experimental manifestations of these Weyl points, both in bulk properties, such as the anomalous Hall effect, and in surface properties, such as the emergence of prominent Fermi arcs. Because CaKFe4As4 displays unconventional fully gapped superconductivity below 30 K, our findings open a route to investigate the interplay between superconductivity and Weyl fermions.",
keywords = "TOTAL-ENERGY CALCULATIONS, STATE, DISCOVERY, SEMIMETAL",
author = "Niclas Heinsdorf and Christensen, {Morten H.} and Mikel Iraola and Shang-Shun Zhang and Fan Yang and Turan Birol and Batista, {Cristian D.} and Roser Valenti and Fernandes, {Rafael M.}",
year = "2021",
month = aug,
day = "3",
doi = "10.1103/PhysRevB.104.075101",
language = "English",
volume = "104",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Physical Society",
number = "7",

}

RIS

TY - JOUR

T1 - Prediction of double-Weyl points in the iron-based superconductor CaKFe4As4

AU - Heinsdorf, Niclas

AU - Christensen, Morten H.

AU - Iraola, Mikel

AU - Zhang, Shang-Shun

AU - Yang, Fan

AU - Birol, Turan

AU - Batista, Cristian D.

AU - Valenti, Roser

AU - Fernandes, Rafael M.

PY - 2021/8/3

Y1 - 2021/8/3

N2 - Employing a combination of symmetry analysis, low-energy modeling, and ab initio simulations, we predict the presence of magnetic-field-induced Weyl points close to the Fermi level in CaKFe4As4. Depending on the relative strengths of the magnetic field and of the spin-orbit coupling, the Weyl fermions can carry a topological charge of +/- 1 or +/- 2, making CaKFe4As4 a rare realization of a double-Weyl semimetal. We further predict experimental manifestations of these Weyl points, both in bulk properties, such as the anomalous Hall effect, and in surface properties, such as the emergence of prominent Fermi arcs. Because CaKFe4As4 displays unconventional fully gapped superconductivity below 30 K, our findings open a route to investigate the interplay between superconductivity and Weyl fermions.

AB - Employing a combination of symmetry analysis, low-energy modeling, and ab initio simulations, we predict the presence of magnetic-field-induced Weyl points close to the Fermi level in CaKFe4As4. Depending on the relative strengths of the magnetic field and of the spin-orbit coupling, the Weyl fermions can carry a topological charge of +/- 1 or +/- 2, making CaKFe4As4 a rare realization of a double-Weyl semimetal. We further predict experimental manifestations of these Weyl points, both in bulk properties, such as the anomalous Hall effect, and in surface properties, such as the emergence of prominent Fermi arcs. Because CaKFe4As4 displays unconventional fully gapped superconductivity below 30 K, our findings open a route to investigate the interplay between superconductivity and Weyl fermions.

KW - TOTAL-ENERGY CALCULATIONS

KW - STATE

KW - DISCOVERY

KW - SEMIMETAL

U2 - 10.1103/PhysRevB.104.075101

DO - 10.1103/PhysRevB.104.075101

M3 - Journal article

VL - 104

JO - Physical Review B

JF - Physical Review B

SN - 2469-9950

IS - 7

M1 - 075101

ER -

ID: 275990506