Related Experiment Video
Updated: Nov 23, 2025
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Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
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Strain-stabilized superconductivity
J P Ruf1, H Paik2,3, N J Schreiber3
1Department of Physics, Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, NY, 14853, USA. jpr239@cornell.edu.
Nature Communications
|January 5, 2021
Summary
Researchers transformed a normal metal into a superconductor by applying epitaxial strain. This method enhances the density of states near the Fermi level, stabilizing superconductivity and offering a new strategy for designing superconductors.
Area of Science:
- Condensed matter physics
- Materials science
- Quantum materials
Background:
- Superconductivity, a quantum state of matter, has been studied for over 100 years.
- Understanding the link between normal-state electronic structure and superconducting properties remains a challenge.
- Deterministic enhancement of superconducting transition temperature is a long-sought goal.
Purpose of the Study:
- To investigate the transmutation of a normal metal into a superconductor.
- To explore the role of epitaxial strain in stabilizing superconductivity.
- To develop a new strategy for designing transition-metal superconductors.
Main Methods:
- Synthesizing Ruthenium Dioxide (RuO2) thin films on Titanium Dioxide (TiO2) substrates.
- Applying epitaxial strain to the thin films.
- Analyzing the electronic structure and superconducting properties.
Main Results:
- Epitaxial strain was successfully applied to synthesize RuO2 thin films.
- The applied strain enhanced the density of states near the Fermi level.
- Superconductivity was stabilized in the strained RuO2 films.
Conclusions:
- Anisotropic epitaxial strain can induce superconductivity in normal metals.
- Modulating the electronic structure, specifically the density of states, is key to stabilizing superconductivity.
- This approach offers a promising strategy for the rational design of new transition-metal superconductors.
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