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Pressured-induced superconducting phase with large upper critical field and concomitant enhancement of antiferromagnetic transition in EuTe2.
- Source :
- Nature Communications; 5/27/2022, Vol. 13 Issue 1, p1-9, 9p
- Publication Year :
- 2022
-
Abstract
- We report an unusual pressure-induced superconducting state that coexists with an antiferromagnetic ordering of Eu<superscript>2+</superscript> moments and shows a large upper critical field comparable to the Pauli paramagnetic limit in EuTe<subscript>2</subscript>. In concomitant with the emergence of superconductivity with T<subscript>c</subscript> ≈ 3–5 K above P<subscript>c</subscript> ≈ 6 GPa, the antiferromagnetic transition temperature T<subscript>N</subscript>(P) experiences a quicker rise with the slope increased dramatically from dT<subscript>N</subscript>/dP = 0.85(14) K/GPa for P ≤ P<subscript>c</subscript> to 3.7(2) K/GPa for P ≥ P<subscript>c</subscript>. Moreover, the superconducting state can survive in the spin-flop state with a net ferromagnetic component of the Eu<superscript>2+</superscript> sublattice under moderate magnetic fields μ<subscript>0</subscript>H ≥ 2 T. Our findings establish the pressurized EuTe<subscript>2</subscript> as a rare magnetic superconductor possessing an intimated interplay between magnetism and superconductivity. Here, the authors report pressure-induced superconductivity with concomitant enhancement of antiferromagnetic transition in layered EuTe<subscript>2</subscript>. The superconductivity is distinctly characterized by the high upper critical fields exceeding the Pauli limit among binary tellurides, a prerequisite of the coexistence of ferromagnetism with superconductivity. [ABSTRACT FROM AUTHOR]
- Subjects :
- SUPERCONDUCTIVITY
TRANSITION temperature
SUPERCONDUCTORS
MAGNETIC fields
MAGNETISM
Subjects
Details
- Language :
- English
- ISSN :
- 20411723
- Volume :
- 13
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Nature Communications
- Publication Type :
- Academic Journal
- Accession number :
- 157133762
- Full Text :
- https://doi.org/10.1038/s41467-022-30718-5