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CoTe2 : A Quantum Critical Dirac Metal with Strong Spin Fluctuations.
Siegfried, Peter E; Bhandari, Hari; Qi, Jeanie; Ghimire, Rojila; Joshi, Jayadeep; Messegee, Zachary T; Beeson, Willie B; Liu, Kai; Ghimire, Madhav Prasad; Dang, Yanliu; Zhang, Huairuo; Davydov, Albert V; Tan, Xiaoyan; Vora, Patrick M; Mazin, Igor I; Ghimire, Nirmal J.
Afiliación
  • Siegfried PE; Department of Physics and Astronomy, George Mason University, Fairfax, VA, 22030, USA.
  • Bhandari H; Quantum Science and Engineering Center, George Mason University, Fairfax, VA, 22030, USA.
  • Qi J; Department of Physics and Astronomy, George Mason University, Fairfax, VA, 22030, USA.
  • Ghimire R; Quantum Science and Engineering Center, George Mason University, Fairfax, VA, 22030, USA.
  • Joshi J; Thomas Jefferson High School, Alexandria, VA, 22312, USA.
  • Messegee ZT; Central Department of Physics, Tribhuvan University, Kirtipur, Kathmandu, 44613, Nepal.
  • Beeson WB; Department of Physics and Astronomy, George Mason University, Fairfax, VA, 22030, USA.
  • Liu K; Quantum Science and Engineering Center, George Mason University, Fairfax, VA, 22030, USA.
  • Ghimire MP; Department of Chemistry and Biochemistry, George Mason University, Fairfax, VA, 22030, USA.
  • Dang Y; Physics Department, Georgetown University, Washington, DC, 20057, USA.
  • Zhang H; Physics Department, Georgetown University, Washington, DC, 20057, USA.
  • Davydov AV; Central Department of Physics, Tribhuvan University, Kirtipur, Kathmandu, 44613, Nepal.
  • Tan X; Materials Science and Engineering Division, National Institute of Standards and Technology (NIST), Gaithersburg, Maryland, 20899, USA.
  • Vora PM; Materials Science and Engineering Division, National Institute of Standards and Technology (NIST), Gaithersburg, Maryland, 20899, USA.
  • Mazin II; Theiss Research, Inc., La Jolla, CA, 92037, USA.
  • Ghimire NJ; Materials Science and Engineering Division, National Institute of Standards and Technology (NIST), Gaithersburg, Maryland, 20899, USA.
Adv Mater ; 35(21): e2300640, 2023 May.
Article en En | MEDLINE | ID: mdl-37012602
ABSTRACT
Quantum critical points separating weak ferromagnetic and paramagnetic phases trigger many novel phenomena. Dynamical spin fluctuations not only suppress the long-range order, but can also lead to unusual transport and even superconductivity. Combining quantum criticality with topological electronic properties presents a rare and unique opportunity. Here, by means of ab initio calculations and magnetic, thermal, and transport measurements, it is shown that the orthorhombic CoTe2 is close to ferromagnetism, which appears suppressed by spin fluctuations. Calculations and transport measurements reveal nodal Dirac lines, making it a rare combination of proximity to quantum criticality and Dirac topology.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Adv Mater Asunto de la revista: BIOFISICA / QUIMICA Año: 2023 Tipo del documento: Article País de afiliación: Estados Unidos
Texto completo
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XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Adv Mater Asunto de la revista: BIOFISICA / QUIMICA Año: 2023 Tipo del documento: Article País de afiliación: Estados Unidos