Nanoscale Layering of Antiferromagnetic and Superconducting Phases in Rb2Fe4Se5 Single Crystals
A. Charnukha, A. Cvitkovic, T. Prokscha, D. Pröpper, N. Ocelic, A. Suter, Z. Salman, E. Morenzoni, J. Deisenhofer, V. Tsurkan, A. Loidl, B. Keimer, A. V. Boris
DOI 10.1103/PhysRevLett.109.017003 · 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 studied phase separation in the single-crystalline antiferromagnetic superconductor Rb2Fe4Se5 (RFS) using a combination of scattering-type scanning near-field optical microscopy and low-energy muon spin rotation (LE-μSR). We demonstrate that the antiferromagnetic and superconducting phases segregate into nanometer-thick layers perpendicular to the iron-selenide planes, while the characteristic in-plane size of the metallic domains reaches 10 μm. By means of LE-μSR we further show that in a 40-nm thick surface layer the ordered antiferromagnetic moment is drastically reduced, while the volume fraction of the paramagnetic phase is significantly enhanced over its bulk value. Self-organization into a quasiregular heterostructure indicates an intimate connection between the modulated superconducting and antiferromagnetic phases.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Rb2Fe4Se5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 32 | Pressure not reported | unknown |
Similar papers
Reciprocal-space structure and dispersion of the magnetic resonant mode in the superconducting phase of RbxFe2−ySe2 single crystals
similarity 0.94G. Friemel et al.
Source status unknown — claims are unverified
Magnetic imaging of antiferromagnetic and superconducting phases in RbxFe2−ySe2 crystals
similarity 0.94J. Hazi et al.
Source status unknown — claims are unverified
Antiferromagnetic order and superlattice structure in nonsuperconducting and superconducting RbyFe1.6+xSe2
similarity 0.94Meng Wang et al.
Source status unknown — claims are unverified
Correlation between superconductivity and antiferromagnetism in Rb0.8Fe2−ySe2−xTex single crystals
similarity 0.93Dachun Gu et al.
Source status unknown — claims are unverified
Superconductivity and magnetism in RbxFe2−ySe2: Impact of thermal treatment on mesoscopic phase separation
similarity 0.93S. Weyeneth et al.
Source status unknown — claims are unverified
Structure, superconductivity, and magnetism in Rb1−xFe1.6Se2−zSz
similarity 0.93D. Croitori et al.
Source status unknown — claims are unverified