Kavli Affiliate: Ke Wang
| First 5 Authors: Zi-Jie Yan, Zi-Jie Yan, , ,
| Summary:
Interface-induced superconductivity has recently been achieved by stacking a
magnetic topological insulator layer on an antiferromagnetic FeTe layer.
However, the mechanism driving this emergent superconductivity remains unclear.
Here, we employ molecular beam epitaxy to grow a 1T-CrTe2 layer, a
two-dimensional ferromagnet with a Curie temperature up to room temperature, on
a FeTe layer. These 1T-CrTe2/FeTe heterostructures show superconductivity with
a critical temperature of ~12 K. Through magnetic force microscopy
measurements, we observe the Meissner effect on the surface of the 1T-CrTe2
layer. Our electrical transport measurements reveal that the 1T-CrTe2/FeTe
heterostructures exhibit nonreciprocal charge transport behavior, characterized
by a large magneto-chiral anisotropy coefficient. The enhanced nonreciprocal
charge transport in 1T-CrTe2/FeTe heterostructures provides a promising
platform for exploring the magnetically controllable superconducting diode
effect.
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