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Updated: Mar 7, 2026
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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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High-temperature superconductivity in one-unit-cell FeSe films
Ziqiao Wang1, Chaofei Liu1, Yi Liu1
1International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, People's Republic of China.
Summary
High-temperature superconductivity in one-unit-cell FeSe films on SrTiO3 substrates is reviewed. Interface effects, including charge transfer and phonon coupling, are key to enhanced Cooper pairing and superconductivity.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Superconductivity
Background:
- The discovery of enhanced superconducting transition temperature (Tc) in one-unit-cell FeSe films on SrTiO3 (1-UC FeSe/STO) has spurred significant research.
- This system represents a new frontier in understanding high-temperature superconductivity in layered materials.
Purpose of the Study:
- To review the rapidly developing field of 1-UC FeSe/STO.
- To focus on the superconducting properties and potential mechanisms of enhanced superconductivity in this system.
- To provide insights into interface engineering for new superconductor exploration.
Main Methods:
- Overview of experimental evidence for high-temperature superconductivity.
- Transport and diamagnetic measurements.
- Scanning tunneling microscopy (STM) and angle-resolved photoemission spectroscopy (ARPES).
Main Results:
- Experimental evidence confirms high-temperature superconductivity in 1-UC FeSe/STO.
- Interface effects, specifically charge transfer and coupling to TiO2 phonon modes, are implicated in strengthened Cooper pairing.
- Accumulating arguments support the role of interface effects in enhanced superconductivity.
Conclusions:
- The study of 1-UC FeSe/STO sheds light on the mechanisms of high-temperature superconductors with layered structures.
- Interface engineering is a promising strategy for discovering new superconductors.
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