High-Endurance Magneto-Electronic Switchable Molecular Electronic Crystal.

Area of Science:

• Molecular electronics
• Condensed matter physics
• Materials science

Background:

• Electrically switchable magnetic and electronic properties are crucial for advanced technologies like quantum sensing and information processing.
• Molecular electronic crystals offer a unique platform for exploring novel electronic and magnetic phenomena.

Purpose of the Study:

• To investigate electrically driven magnetic and electronic phase transitions in molecular crystals.
• To demonstrate robust magneto-electric switching at room temperature for potential device applications.

Main Methods:

• Utilized potassium-7,7,8,8-tetracyanoquinodimethan as the molecular electronic crystal.
• Performed electron spin resonance (ESR) studies to analyze spin dynamics.
• Employed mechanistic spectroscopy to probe charge states and transitions.

Main Results:

• Observed an electrically driven magnetic and electronic phase transition.
• Achieved stable magneto-electric switching exceeding 10^5 cycles at room temperature.
• ESR revealed cooperative transitions between spin and charge degrees of freedom.
• Spectroscopy indicated charges within an inhomogeneous conductor-insulator mixed state.

Conclusions:

• Electrically controlled ordering in strongly correlated molecular crystals enables dynamic magneto-electric switching.
• These findings pave the way for developing novel molecular-based memory and switching devices.
• The study highlights the potential of molecular materials in next-generation electronic applications.