TY - JOUR
T1 - Superconducting Fourfold Fe(Te,Se) Film on Sixfold Magnetic MnTe via Hybrid Symmetry Epitaxy
AU - Yao, Xiong
AU - Mazza, Alessandro R.
AU - Han, Myung Geun
AU - Yi, Hee Taek
AU - Jain, Deepti
AU - Brahlek, Matthew
AU - Oh, Seongshik
N1 - Funding Information:
The work at Rutgers is supported by the National Science Foundation’s DMR2004125, Army Research Office’s W911NF2010108, MURI W911NF2020166, and the center for Quantum Materials Synthesis (cQMS), funded by the Gordon and Betty Moore Foundation’s EPiQS initiative through Grant GBMF10104. The work at Oak Ridge National Laboratory is supported by the U.S. Department of Energy, Office of Science, National Quantum Information Science Research Centers and the Basic Energy Sciences, Materials Sciences and Engineering Division. The work at Brookhaven National Laboratory is supported by the Materials Science and Engineering Division, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DESC0012704. FIB use at the Center for Functional Nanomaterials, Brookhaven National Laboratory, is acknowledged.
Publisher Copyright:
© 2022 American Chemical Society.
PY - 2022
Y1 - 2022
N2 - Epitaxial Fe(Te,Se) thin films have been grown on various substrates but never been grown on magnetic layers. Here we report the epitaxial growth of fourfold Fe(Te,Se) film on a sixfold antiferromagnetic insulator, MnTe. The Fe(Te,Se)/MnTe heterostructure shows a clear superconducting transition at around 11 K, and the critical magnetic field measurement suggests the origin of the superconductivity to be bulk-like. Structural characterizations suggest that the uniaxial lattice match between Fe(Te,Se) and MnTe allows a hybrid symmetry epitaxy mode, which was recently discovered between Fe(Te,Se) and Bi2Te3. Furthermore, the Te/Fe flux ratio during deposition of the Fe(Te,Se) layer is found to be critical for its superconductivity. Now that superconducting Fe(Te,Se) can be grown on two related hexagonal platforms, Bi2Te3 and MnTe, this result opens a new possibility of combining topological superconductivity of Fe(Te,Se) with the rich physics in the intrinsic magnetic topological materials (MnTe)n(Bi2Te3)m family.
AB - Epitaxial Fe(Te,Se) thin films have been grown on various substrates but never been grown on magnetic layers. Here we report the epitaxial growth of fourfold Fe(Te,Se) film on a sixfold antiferromagnetic insulator, MnTe. The Fe(Te,Se)/MnTe heterostructure shows a clear superconducting transition at around 11 K, and the critical magnetic field measurement suggests the origin of the superconductivity to be bulk-like. Structural characterizations suggest that the uniaxial lattice match between Fe(Te,Se) and MnTe allows a hybrid symmetry epitaxy mode, which was recently discovered between Fe(Te,Se) and Bi2Te3. Furthermore, the Te/Fe flux ratio during deposition of the Fe(Te,Se) layer is found to be critical for its superconductivity. Now that superconducting Fe(Te,Se) can be grown on two related hexagonal platforms, Bi2Te3 and MnTe, this result opens a new possibility of combining topological superconductivity of Fe(Te,Se) with the rich physics in the intrinsic magnetic topological materials (MnTe)n(Bi2Te3)m family.
KW - Fe(Te,Se)/MnTe
KW - Hybrid symmetry epitaxy
KW - Superconductivity
KW - Superconductor/magnetic insulator heterostructure
KW - Uniaxial lattice match
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U2 - 10.1021/acs.nanolett.2c02510
DO - 10.1021/acs.nanolett.2c02510
M3 - Article
C2 - 36070237
AN - SCOPUS:85137874397
SN - 1530-6984
JO - Nano Letters
JF - Nano Letters
ER -