Majorana-Weyl fermions in the chiral superconductor Sr{sub 2}RuO{sub 4}

Journal Article · Fri Apr 01 00:00:00 EDT 2011 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.83.144502· OSTI ID:21538279

Nobukane, Hiroyoshi; Tokuno, Akiyuki; Tanda, Satoshi ^[1]; Matsuyama, Toyoki ^[2]

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1. Department of Applied Physics, Hokkaido University, Sapporo 060-8628 (Japan)
2. Department of Physics, Nara University of Education, Nara 630-8528 (Japan)

We found Majorana-Weyl fermions in a chiral superconductor Sr{sub 2}RuO{sub 4}. 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 Sr{sub 2}RuO{sub 4}.

• OSTI ID: 21538279
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 83, Issue 14; Other Information: DOI: 10.1103/PhysRevB.83.144502; (c) 2011 American Institute of Physics; ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CHIRALITY
ELECTRIC CONDUCTIVITY
ELECTRIC POTENTIAL
EXCITATION
FERMIONS
MAGNETIC FIELDS
MAGNETIZATION
MAJORANA THEORY
OXYGEN COMPOUNDS
RUTHENIUM COMPOUNDS
STRONTIUM COMPOUNDS
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTORS
TUNNEL EFFECT
WEYL UNIFIED THEORY
ALKALINE EARTH METAL COMPOUNDS
ELECTRICAL PROPERTIES
ENERGY-LEVEL TRANSITIONS
FIELD THEORIES
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
REFRACTORY METAL COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
UNIFIED-FIELD THEORIES