Unusual Nature of Ferromagnetism Coexisting with Superconductivity in UGe2
T. Nishioka, G. Motoyama, S. Nakamura, H. Kadoya, N. K. Sato
DOI 10.1103/PhysRevLett.88.237203 · Physical Review Letters
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 report the discovery of a jump in the magnetization of a macroscopic single crystalline sample of UGe2 that shows coexistence of ferromagnetism and superconductivity. In particular, we observe that the jump occurs at regular intervals of field and only at very low temperatures. This novel feature implies that the magnetic field induces a sudden change of the direction of the magnetization between two equivalent easy axes of magnetization even in a macroscopic sample. We ascribe it to a field-tuned resonant tunneling between quantum spin states, and we propose that the size of a magnetic domain is smaller than a superconducting coherence length.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| UGe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.7 | 1.18 GPa | onset |
| UGe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.6 | 1.21 GPa | onset |
Similar papers
Possible competitive coexistence of ferromagnetism and superconductivity in UGe2
similarity 0.97Gaku Motoyama et al.
Source status unknown — claims are unverified
Heat-capacity anomalies at Tsc and T* in the ferromagnetic superconductor UGe2
similarity 0.97N. Tateiwa et al.
Source status unknown — claims are unverified
Anisotropy and pressure dependence of the upper critical field of the ferromagnetic superconductor UGe2
similarity 0.96I. Sheikin et al.
Source status unknown — claims are unverified
AC magnetic-field response of the ferromagnetic superconductor UGe2 with different magnetized states
similarity 0.95Hiroyuki Tanaka et al.
Source status unknown — claims are unverified
Critical behavior in unconventional ferromagnetic superconductors
similarity 0.95Dimo I. Uzunov
Source status unknown — claims are unverified
Experimental evidence for ferromagnetic spin-pairing superconductivity emerging in UGe2: A Ge73-nuclear-quadrupole-resonance study under pressure
similarity 0.95A. Harada et al.
Source status unknown — claims are unverified