Stability by prominent electronic correlation. In a narrow energy window ($\sim 30$ meV), which could induce intriguing Hourglass band structure in detail which is very clear around the Fermi levelĪnd the topologically protected surface drumhead states of (100) surface areįound to spread over more than one half surface Brillouin zone and only appear In metal-based Josephson junctions, the supercurrent flows uniformly through the scattering region. In this device, the measurement of a critical current as a function of an external magnetic field produces a clear signature of the ballistic supercurrent. Synthesized recently with a distorted pyrochlore structure to illustrate the We propose an hourglass-shaped Josephson junction geometry to probe the nature of transport. The hourglass empties in one minute and creates different shapes as it.
Verify the hourglass BCs for different values of $U$. The magnetic hourglass is another great and original piece of Kikkerland design. Materials database and first-principles calculations in the frame of LDA+SOC+U Results, the essential hourglass BCs are highlighted, whose MSGs are thenĪpplied to predict hundreds of magnetic materials from the MAGNDATA magnetic In the 1651 MSGs and 528 magnetic layer groups (MLGs) with spin-orbitalĬoupling (SOC): Only 331 MSGs and 53 MLGs can host hourglass BCs. Here we first list all symmetry conditions that allow hourglass BCs To date, there have no magnetic material verified with hourglassįermions. Symmetry of crystal and magnetic structure, namely, the magnetic space group Metals with hourglass BC (being Weyl point, Dirac point, lying in nodal loop,Īnd so on) independent on the calculation methods and only determined by the Such novel property renders the theoretical prediction on magnetic topological Utilizing the symmetry properties of wave-functions at high-symmetry points.Īmong various BCs, the so-called hourglass BCs (with the low-energy excitationsĭubbed as hourglass fermions) are fascinating since they can be guaranteed toĮxist under specific symmetry conditions even without realistic calculations.
MAGNETIC HOURGLASS PDF
Download a PDF of the paper titled Magnetic hourglass fermions: from exhaustive symmetry conditions to high-throughput materials predictions, by Yating Hu and 1 other authors Download PDF Abstract: Many topological band crossings (BCs) have been predicted efficiently
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