Anomalous Josephson network in the Ru‐Sr2RuO4 eutectic system
J. Hooper, Z. Q. Mao, K. D. Nelson, Y. Liu, M. Wada, Y. Maeno
DOI 10.1103/PhysRevB.70.014510 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We measured the c-axis current-voltage (I‐V) characteristics of Sr2RuO4 and Ru-enriched Sr2RuO4 eutectic systems. Our results revealed that the 3-K phase in the Ru‐Sr2RuO4 eutectic system forms a complex Josephson network, which dominates the critical current of the system even at temperatures below bulk Tc. We also found that this Josephson network exhibits anomalous asymmetric features in I‐V characteristics, such that the critical current density at positive current Jc+ differs from that at negative current Jc− by 5% at 0.3 K. This unusual behavior diminishes with increasing temperature or magnetic field. It disappears at temperatures above 2.3 K at zero field, or above 0.2 T at 0.3 K. We discuss these unusual behaviors in terms of a recent theory that argues a time reversal symmetry breaking transition in the 3-K phase.
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. | 1.5 | Pressure not reported | unknown |
| Sr2RuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.2 | Pressure not reported | onset |
| Sr2RuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2.8 | Pressure not reported | onset |
| Sr2RuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.4 | Pressure not reported | unknown |
Similar papers
Inversion symmetry of Josephson current as test of chiral domain wall motion in Sr2RuO4
similarity 0.95Kohta Saitoh et al.
Source status unknown — claims are unverified
Disorder-induced pronounced magnetoresistive hysteresis in Josephson junctions
similarity 0.94Yu Wu et al.
Source status unknown — claims are unverified
Characterization of Sr2RuO4 Josephson junctions made of epitaxial films
similarity 0.94Masaki Uchida et al.
Source status unknown — claims are unverified
Ramp Josephson junctions of Al/Ti/Sr2RuO4: Observation of single-domain quantum oscillations and the detection of chiral surface current
similarity 0.94Zixuan Li et al.
Source status unknown — claims are unverified
Time-reversal invariant superconductivity of Sr2RuO4 revealed by Josephson effects
similarity 0.93Satoshi Kashiwaya et al.
Source status unknown — claims are unverified
Properties of the H−T phase diagram of the 3−K phase in eutectic Sr2RuO4-Ru: Evidence for chiral superconductivity
similarity 0.93Hirono Kaneyasu et al.
Source status unknown — claims are unverified