Measurements of high magnetic fields and their gradients by a beryllium single-crystal indicator

Signatures of Topological Surface State and Unconventional Magnetotransport Properties in Elemental Ruthenium

“…As Figure 3c illustrates, these coefficients demonstrate opposite angle dependence and C 2 reverses its sign in between 20 • -30 the Fermi surface of Ru is quite complex with multiple connected open pockets as well as closed sheets and lens. [30,57] These pockets lead to magnetic breakdown orbits, where in strong enough magnetic field, the open orbits become closed along certain crystallographic directions. [30,57] It is possible that the change in slope for the TMR curves and hence the features in the angle dependence of the coefficients C 1 and C 2 are related to such breakdown orbits.…”

“…[ 26 ] Moreover, oscillations in the Nernst signal in presence of magnetic field, large non‐saturating transverse magnetoresistance (TMR) and anomalies in the Hall effect were reported in the earlier studies on Ru. While these properties were attributed to different types of magnetic‐breakdown trajectories, [ 27–30 ] their underlying similarities with the typical magnetotransport properties of topological materials warrant further investigation; especially in light of the topological band theory.…”

Magnetic breakdown with spin flip

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