Univ. Paris-Saclay

Service de Physique de l'Etat Condensé

Van der Waals, possibly two-dimensional magnetic materials
Institut Néel, CNRS & Université Grenoble Alpes, Grenoble
Mercredi 29/03/2023, 11:15-12:15
CEA Bât 774, Amphi Claude Bloch, Orme des Merisiers

Two-dimensional  (2D)  materials  hosting  magnetic  orders  have  been  discovered  in  2016-2017. They  have  generated  tremendous  research  activity  in  the  past  years,  partly  due  to  the opportunities they offer to explore low-dimensional on-lattice order physics, and also driven by the prospect for future applications in the field of spintronics. I will give a biased, rather general introduction to this field of research and some of its main current directions, and I will then focus on  a  particular  class  of  these  materials,  Cr-based  tellurides.  Among  this  family  is  the  1T polymorph  of  CrTe2,  a  truly  van  der  Waals  compound  exhibiting  room  temperature ferromagnetism  (a  rare  property  for  a  van  der  Waals  crystals)  discovered  in  Grenoble  [1-4], which  we  are  able  to  controllably  and  locally  transform  into  other  Cr-Te  compounds  with different magnetic properties [5].
[1] A. Purbawati et al., ACS Appl. Mater. Interf. 12, 30702 (2020)
[2] X. Sun et al., Nano Res. 13, 3358 (2020)
[3] F. Fabre et al., Phys. Rev. Materials 5, 034008 (2021)
[4] P. Kumar et al., Phys. Rev. Applied 18, L061002 (2022)
[5] A. Purbawati, S. Sarkar et al. ACS Appl. Electron. Mater. 5, 764 (2023)


Coffee and pastries will be served at 11:00 in the hall


Contact : Marceau HENOT


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