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001032484 1001_ $$0P:(DE-HGF)0$$aSato, Manabu$$b0
001032484 245__ $$aIdeal spin-orbit-free Dirac semimetal and diverse topological transitions in Y8CoIn3 family
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001032484 520__ $$aTopological semimetals, known for their intriguing properties arising from band degeneracies, have garnered significant attention. However, the discovery of a material realization and the detailed characterization of spinless Dirac semimetals have not yet been accomplished. Here, we propose from first-principles calculations that the RE8CoX3 group (RE = rare earth elements, X = Al, Ga, or In) contains ideal spinless Dirac semimetals whose Fermi surfaces are fourfold degenerate band-crossing points (without including spin degeneracy). Despite the lack of space inversion symmetry in these materials, Dirac points are formed on the rotation-symmetry axis due to accidental degeneracies of two bands corresponding to different 2-dimensional irreducible representations of the C6v group. We also investigate, through first-principles calculations and effective model analysis, various phase transitions caused by lattice distortion or elemental substitutions from the Dirac semimetal phase to distinct topological semimetallic phases such as nonmagnetic linked-nodal-line and Weyl semimetals (characterized by the second Stiefel–Whitney class) and ferromagnetic Weyl semimetals.
001032484 536__ $$0G:(DE-HGF)POF4-5211$$a5211 - Topological Matter (POF4-521)$$cPOF4-521$$fPOF IV$$x0
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001032484 7001_ $$0P:(DE-Juel1)157840$$aBouaziz, Juba$$b1
001032484 7001_ $$0P:(DE-HGF)0$$aSumita, Shuntaro$$b2
001032484 7001_ $$0P:(DE-HGF)0$$aKobayashi, Shingo$$b3
001032484 7001_ $$0P:(DE-HGF)0$$aTateishi, Ikuma$$b4
001032484 7001_ $$0P:(DE-Juel1)130548$$aBlügel, Stefan$$b5
001032484 7001_ $$0P:(DE-HGF)0$$aFurusaki, Akira$$b6
001032484 7001_ $$0P:(DE-HGF)0$$aHirayama, Motoaki$$b7$$eCorresponding author
001032484 773__ $$0PERI:(DE-600)3008524-X$$a10.1038/s43246-024-00635-9$$gVol. 5, no. 1, p. 253$$n1$$p253$$tCommunications materials$$v5$$x2662-4443$$y2024
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001032484 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$a Department of Applied Physics, The University of Tokyo, Bunkyo, Japan$$b0
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001032484 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$a Department of Basic Science, The University of Tokyo, Meguro, Japan$$b2
001032484 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$a Komaba Institute for Science, The University of Tokyo, Meguro, Japan$$b2
001032484 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$a RIKEN Center for Emergent Matter Science, Wako, Japan$$b3
001032484 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$a RIKEN Center for Emergent Matter Science, Wako, Japan$$b4
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001032484 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$a Condensed Matter Theory Laboratory, RIKEN CPR, Wako, Japan$$b6
001032484 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$a RIKEN Center for Emergent Matter Science, Wako, Japan$$b6
001032484 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$a Department of Applied Physics, The University of Tokyo, Bunkyo, Japan$$b7
001032484 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$a RIKEN Center for Emergent Matter Science, Wako, Japan$$b7
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