%0 Journal Article %1 noauthororeditor %A Borisenko, Sergey %A Evtushinsky, Daniil %A Gibson, Quinn %A Yaresko, Alexander %A Koepernik, Klaus %A Kim, Timur %A Ali, Mazhar %A van den Brink, Jeroen %A Hoesch, Moritz %A Fedorov, Alexander %A Haubold, Erik %A Kushnirenko, Yevhen %A Soldatov, Ivan %A Schäfer, Rudolf %A Cava, Robert J. %D 2019 %J Nat Commun %K a b %N 1 %P 3424 %R 10.1038/s41467-019-11393-5 %T Time-reversal symmetry breaking type-II weyl state in YbMnBi$_2$ %U https://doi.org/10.1038/s41467-019-11393-5 %V 10 %X Spectroscopic detection of Dirac and Weyl fermions in real materials is vital for both, promising applications and fundamental bridge between high-energy and condensed-matter physics. While the presence of Dirac and noncentrosymmetric Weyl fermions is well established in many materials, the magnetic Weyl semimetals still escape direct experimental detection. In order to find a time-reversal symmetry breaking Weyl state we design two materials and present here experimental and theoretical evidence of realization of such a state in one of them, YbMnBi2. We model the time-reversal symmetry breaking observed by magnetization and magneto-optical microscopy measurements by canted antiferromagnetism and find a number of Weyl points. Using angle-resolved photoemission, we directly observe two pairs of Weyl points connected by the Fermi arcs. Our results not only provide a fundamental link between the two areas of physics, but also demonstrate the practical way to design novel materials with exotic properties.

@article{noauthororeditor, abstract = {Spectroscopic detection of Dirac and Weyl fermions in real materials is vital for both, promising applications and fundamental bridge between high-energy and condensed-matter physics. While the presence of Dirac and noncentrosymmetric Weyl fermions is well established in many materials, the magnetic Weyl semimetals still escape direct experimental detection. In order to find a time-reversal symmetry breaking Weyl state we design two materials and present here experimental and theoretical evidence of realization of such a state in one of them, YbMnBi2. We model the time-reversal symmetry breaking observed by magnetization and magneto-optical microscopy measurements by canted antiferromagnetism and find a number of Weyl points. Using angle-resolved photoemission, we directly observe two pairs of Weyl points connected by the Fermi arcs. Our results not only provide a fundamental link between the two areas of physics, but also demonstrate the practical way to design novel materials with exotic properties.}, added-at = {2023-06-30T14:52:32.000+0200}, author = {Borisenko, Sergey and Evtushinsky, Daniil and Gibson, Quinn and Yaresko, Alexander and Koepernik, Klaus and Kim, Timur and Ali, Mazhar and van den Brink, Jeroen and Hoesch, Moritz and Fedorov, Alexander and Haubold, Erik and Kushnirenko, Yevhen and Soldatov, Ivan and Schäfer, Rudolf and Cava, Robert J.}, biburl = {https://www.bibsonomy.org/bibtex/276d08770da2bc51cb1cfbaeb0bb3a059/ctqmat}, day = 31, description = {Time-reversal symmetry breaking type-II weyl state in YbMnBi2}, doi = {10.1038/s41467-019-11393-5}, interhash = {8aeca7b4d440dfb2c75c4d9361665fdd}, intrahash = {76d08770da2bc51cb1cfbaeb0bb3a059}, issn = {2041-1723}, journal = {Nat Commun}, keywords = {a b}, month = {07}, number = 1, pages = 3424, timestamp = {2023-10-20T09:52:04.000+0200}, title = {Time-reversal symmetry breaking type-II weyl state in YbMnBi$_{\mathbf{2}}$}, url = {https://doi.org/10.1038/s41467-019-11393-5}, volume = 10, year = 2019 }