Majorana-Weyl fermions in the chiral superconductor Sr2RuO4
Hiroyoshi Nobukane, Akiyuki Tokuno, Toyoki Matsuyama, Satoshi Tanda
DOI 10.1103/PhysRevB.83.144502 · Physical Review B
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Abstract
We found Majorana-Weyl fermions in a chiral superconductor Sr2RuO4. The current-voltage curves reveal anomalous behavior: The induced voltage is an even function of the bias current. The zero-bias conductance peak was observed through the tunnel junction at the edge. The magnetic-field dependence suggests the excitation of the Majorana-Weyl fermions along the closed chiral edge current of the single domain under a bias current. We also discuss the relationship between a change in the chirality and the spontaneous magnetization of the single domain Sr2RuO4.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Sr2RuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.59 | Pressure not reported | onset |
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