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Charge density wave induced nodal lines in LaTe3.
Sarkar, Shuvam; Bhattacharya, Joydipto; Sadhukhan, Pampa; Curcio, Davide; Dutt, Rajeev; Singh, Vipin Kumar; Bianchi, Marco; Pariari, Arnab; Roy, Shubhankar; Mandal, Prabhat; Das, Tanmoy; Hofmann, Philip; Chakrabarti, Aparna; Roy Barman, Sudipta.
Afiliación
  • Sarkar S; UGC-DAE Consortium for Scientific Research, Khandwa Road, Indore, 452001, Madhya Pradesh, India.
  • Bhattacharya J; Theory and Simulations Laboratory, Raja Ramanna Centre for Advanced Technology, Indore, 452013, Madhya Pradesh, India.
  • Sadhukhan P; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, 400094, Maharashtra, India.
  • Curcio D; UGC-DAE Consortium for Scientific Research, Khandwa Road, Indore, 452001, Madhya Pradesh, India.
  • Dutt R; Department of Physics and Astronomy, Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Aarhus C, 8000, Denmark.
  • Singh VK; Theory and Simulations Laboratory, Raja Ramanna Centre for Advanced Technology, Indore, 452013, Madhya Pradesh, India.
  • Bianchi M; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, 400094, Maharashtra, India.
  • Pariari A; UGC-DAE Consortium for Scientific Research, Khandwa Road, Indore, 452001, Madhya Pradesh, India.
  • Roy S; Department of Physics and Astronomy, Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Aarhus C, 8000, Denmark.
  • Mandal P; Saha Institute of Nuclear Physics, HBNI, 1/AF Bidhannagar, Kolkata, 700064, India.
  • Das T; Vidyasagar Metropolitan College, 39, Sankar Ghosh Lane, Kolkata, 700006, India.
  • Hofmann P; Saha Institute of Nuclear Physics, HBNI, 1/AF Bidhannagar, Kolkata, 700064, India.
  • Chakrabarti A; Department of Physics, Indian Institute of Science, Bangalore, 560012, India.
  • Roy Barman S; Department of Physics and Astronomy, Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Aarhus C, 8000, Denmark.
Nat Commun ; 14(1): 3628, 2023 Jun 19.
Article en En | MEDLINE | ID: mdl-37336909
LaTe3 is a non-centrosymmetric material with time reversal symmetry, where the charge density wave is hosted by the Te bilayers. Here, we show that LaTe3 hosts a Kramers nodal line-a twofold degenerate nodal line connecting time reversal-invariant momenta. We use angle-resolved photoemission spectroscopy, density functional theory with an experimentally reported modulated structure, effective band structures calculated by band unfolding, and symmetry arguments to reveal the Kramers nodal line. Furthermore, calculations confirm that the nodal line imposes gapless crossings between the bilayer-split charge density wave-induced shadow bands and the main bands. In excellent agreement with the calculations, spectroscopic data confirm the presence of the Kramers nodal line and show that the crossings traverse the Fermi level. Furthermore, spinless nodal lines-completely gapped out by spin-orbit coupling-are formed by the linear crossings of the shadow and main bands with a high Fermi velocity.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2023 Tipo del documento: Article País de afiliación: India Pais de publicación: Reino Unido
Texto completo
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XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2023 Tipo del documento: Article País de afiliación: India Pais de publicación: Reino Unido