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Scientific paper - Original scientific paper
EuCd2As2: A Magnetic Semiconductor
Physical Review Letters, 131 (2023), 18; 186704. https://doi.org/10.1103/PhysRevLett.131.186704
Santos-Cottin, D.; Mohelský, I.; Wyzula, J.; Le Mardelé, F.; Kapon, I.; Nasrallah, S.; Barišić, Neven; Živković, I.; Soh, J. R.; Guo, F.; Rigaux, K.; Puppin, M.; Dil, J. H.; Gudac, Bruno; Rukelj, Zoran; Novak, M.; Kuzmenko, A. B.; Homes, C. C.; Dietl, Tomasz; Orlita, M.; Akrap, Ana More authors...

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Santos Cottin, D., Mohelský, I., Wyzula, J., Le Mardelé, F., Kapon, I., Nasrallah, S. ... Akrap, A. (2023). EuCd2As2: A Magnetic Semiconductor. Physical Review Letters, 131. (18). doi: 10.1103/PhysRevLett.131.186704

Santos Cottin, D., et al. "EuCd2As2: A Magnetic Semiconductor." Physical Review Letters, vol. 131, no. 18, 2023. https://doi.org/10.1103/PhysRevLett.131.186704

Santos Cottin, D., I. Mohelský, J. Wyzula, F. Le Mardelé, I. Kapon, S. Nasrallah, Neven Barišić, et al. "EuCd2As2: A Magnetic Semiconductor." Physical Review Letters 131, no. 18 (2023). https://doi.org/10.1103/PhysRevLett.131.186704

Santos Cottin, D., et al. (2023) 'EuCd2As2: A Magnetic Semiconductor', Physical Review Letters, 131(18). doi: 10.1103/PhysRevLett.131.186704

Santos Cottin D, Mohelský I, Wyzula J, Le Mardelé F, Kapon I, Nasrallah S, and sur.. EuCd2As2: A Magnetic Semiconductor. Physical Review Letters [Internet]. 2023 November [cited 2024 November 23];131(18). doi: 10.1103/PhysRevLett.131.186704

D. Santos Cottin, et al., "EuCd2As2: A Magnetic Semiconductor", Physical Review Letters, vol. 131, no. 18, November 2023. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:028220. [Accessed: 23 November 2024]

Metadata
Title (english)EuCd2As2: A Magnetic Semiconductor
AuthorD. Santos-Cottin
AuthorI. Mohelský
AuthorJ. Wyzula
AuthorF. Le Mardelé
AuthorI. Kapon
AuthorS. Nasrallah
AuthorNeven Barišić
AuthorI. Živković
AuthorJ. R. Soh
AuthorF. Guo
AuthorK. Rigaux
AuthorM. Puppin
AuthorJ. H. Dil
AuthorBruno Gudac
AuthorZoran Rukelj
AuthorM. Novak
AuthorA. B. Kuzmenko
AuthorC. C. Homes
AuthorTomasz Dietl
AuthorM. Orlita
AuthorAna Akrap
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
EuCd2As2 is now widely accepted as a topological semimetal in which a Weyl phase is induced by an external magnetic field. We challenge this view through firm experimental evidence using a combination of electronic transport, optical spectroscopy, and excited-state photoemission spectroscopy. We show that the EuCd2As2 is in fact a semiconductor with a gap of 0.77 eV. We show that the externally applied magnetic field has a profound impact on the electronic band structure of this system. This is manifested by a huge decrease of the observed band gap, as large as 125 meV at 2 T, and, consequently, by a giant redshift of the interband absorption edge. However, the semiconductor nature of the material remains preserved. EuCd2As2 is therefore a magnetic semiconductor rather than a Dirac or Weyl semimetal, as suggested by ab initio computations carried out within the local spin-density approximation.
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titlePhysical Review Letters
Numberingvol. 131, no. 18, 186704
p-ISSN0031-9007
e-ISSN1079-7114
DOIhttps://doi.org/10.1103/PhysRevLett.131.186704
URN:NBNurn:nbn:hr:217:028220
Publication2023-11
ProjectNumber: KK.01.1.1.02.0013
Title (croatian): Centar za Napredna Istraživanja Kompleksnih Sustava
Title (english): Centre for Advanced Research of Complex Systems
Acronym: CeNIKS
Leader: Mihael Srđan Grbić
Jurisdiction: eu
Funding stream: European Regional Development Fund
Document URLhttps://link.aps.org/doi/10.1103/PhysRevLett.131.186704
Type of resourceText
Access conditionsOpen access
Terms of useLicence In copyright icon
Public note© 2023 American Physical Society. Received 13 January 2023; revised 22 May 2023; accepted 10 October 2023; published 3 November 2023.
Created on2024-07-22 13:03:17