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Title: Single Crystal Growth and Study of the Ferromagnetic Superconductor RbEuFe4As4

Journal Article · · Crystal Growth and Design

RbEuFe4As4 exhibits both superconducting order 0.05 in the FeAs layers and ferromagnetic order in the Eu layers, providing a good platform to study the interaction and microscopic coexistence of these two traditionally incompatible orders. Growing high-quality RbEuFe4As4 single crystals is essential to investigate these phenomena at a deeper level. Here in this paper we report the successful growth of the RbEuFe4As4 single crystals with millimeter-size dimensions using a RbAs flux. The high-quality crystals were characterized via resistivity, magnetization, and heat capacity measurements. Single crystal X-ray diffraction data refinements reveal almost regular FeAs4 tetrahedra (As1-Fe-As1 = 108.60(7)degrees, As2-Fe-As2 = 109.01 (8)degrees, and As1-Fe-As2 = 109.81(2)degrees) in RbEuFe4As4, providing structural support for the highest superconducting transition temperature (Tc = 36.8 K) among all known AAeFe4As4 (A = K, Rb, Cs; Ae = Ca, Sr, Eu) compounds. Finally, our flux method using RbAs can also be employed to grow other desired transition metal compounds targeting the same crystal structure.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1460964
Journal Information:
Crystal Growth and Design, Journal Name: Crystal Growth and Design Journal Issue: 6 Vol. 18; ISSN 1528-7483
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (8)

Effect of pressure on the self-hole-doped superconductor RbGd 2 Fe 4 As 4 O 2 journal December 2018
Coexisting spin resonance and long-range magnetic order of Eu in EuRbFe 4 As 4 journal July 2019
Anisotropic upper critical field of pristine and proton-irradiated single crystals of the magnetically ordered superconductor RbEuFe 4 As 4 journal August 2019
Melting of vortex lattice in the magnetic superconductor RbEuFe 4 As 4 journal September 2019
Helical structures in layered magnetic superconductors due to indirect exchange interactions mediated by interlayer tunneling journal December 2019
Superconducting and magnetic phase diagram of RbEuFe 4 As 4 and CsEuFe 4 As 4 at high pressure journal July 2018
Anisotropic superconductivity and magnetism in single-crystal RbEuFe 4 As 4 journal September 2018
Self-induced magnetic flux structure in the magnetic superconductor RbEuFe 4 As 4 journal April 2019