Continuously evolving antiferromagnetic order within the superconducting phase in Zn-doped CeCoIn5
Kaede Inoh, Ryosuke Koizumi, Teppei Takahashi, Hayao Fujimoto, Hideaki Ebisawa, Azumi Yashiro, Mika Kohinata, Asuka Hosogai, Akira Matsuo, Koichi Kindo, Ikuto Kawasaki, Daisuke Okuyama, Hung-Cheng Wu, Taku J. Sato, Kenichi Tenya, Kenji Ohoyama, Kazuaki Iwasa, Makoto Yokoyama
DOI 10.1103/PhysRevB.111.104510 · 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
The antiferromagnetic (AFM) order inside the superconducting (SC) phase of CeCo(In1−xZnx)5 (x≤0.06) is investigated by neutron scattering, specific heat, and ac magnetic susceptibility measurements. It is confirmed that the AFM order with a modulation vector of q0=(1/2,1/2,1/2) develops for x>0.03, accompanied by the reduction of the SC transition temperature Tc from 2.3 K (x=0) to 1.6 K (x=0.06). The AFM transition temperature TN and the staggered moment μ continuously increase from zero within the SC phase as x increases beyond 0.03. For the small x range satisfying the TN<Tc condition, the AFM Bragg peak intensity shows an unusually gradual development with a (TN−T)2 function below TN and the specific heat shows no anomaly at TN. In contrast, when TN is larger than Tc at x=0.06, the AFM Bragg peak evolves with the conventional (TN−T) dependence and a clear jump in the specific heat occurs at TN. A coupling between the SC and AFM orders at the microscopic level is suggested to yield these unusual features observed in the small x range.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| CeCoIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2.3 | Pressure not reported | onset |
| CeCo(In1-xZnx)5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.6 | Pressure not reported | onset |
| CeCo(In1-xZnx)5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.6 | Pressure not reported | onset |
Similar papers
Unpaired Electrons in the Heavy-Fermion Superconductor CeCoIn5
similarity 0.96M. A. Tanatar et al.
Source status unknown — claims are unverified
Multigap Superconductivity in the Heavy-Fermion System CeCoIn5
similarity 0.96G. Seyfarth et al.
Source status unknown — claims are unverified
Magnetic-Field-Induced Pattern of Coexisting Condensates in the Superconducting State of CeCoIn5
similarity 0.96Alexandros Aperis et al.
Source status unknown — claims are unverified
Unconventional Superconductivity in CeIrIn5 and CeCoIn5: Specific Heat and Thermal Conductivity Studies
similarity 0.95R. Movshovich et al.
Source status unknown — claims are unverified
Specific heat at the transition in a superconductor with fluctuating magnetic moments
similarity 0.95Šimon Kos et al.
Source status unknown — claims are unverified
Impurity-induced antiferromagnetic order in Pauli-limited nodal superconductors: Application to heavy-fermion CeCoIn5
similarity 0.95Johannes H. J. Martiny et al.
Source status unknown — claims are unverified