Sliding ferroelectricity and ferroelectric–valley coupling in Janus RuXY (X, Y = Cl, Br, I) bilayers

Key Points

• The research aims to explore the characteristics of sliding ferroelectricity and its coupling mechanisms in Janus RuXY bilayers.
• Synthesis of Janus transition-metal dihalide bilayers RuXY
• Examination of ferroelectric properties
• Analysis of interlayer coupling characteristics
• Demonstrated the coexistence of sliding ferroelectricity and interlayer antiferromagnetism
• Identified significant ferroelectric–valley coupling in these materials
• Proposed potential applications in advanced electronic devices