Fe(100)-(borazine)n=1-4-Fe(100): a multifunctional spin diode with spin valve action

Area of Science:

• Molecular spintronics
• Quantum phenomena in materials

Background:

• Borazine (B3N3H6), an inorganic analog of benzene, is explored for advanced electronic applications.
• Molecular spin diodes and spin valves are crucial components in spintronic devices.

Purpose of the Study:

• To investigate the potential of borazine clusters as multifunctional molecular spin diodes and spin valves.
• To understand the mechanism behind the observed spin diode and spin valve properties.

Main Methods:

• Computational study of Fe(100)-(borazine)n=1-4-Fe(100) systems.
• Analysis of current rectification ratio and tunneling magnetoresistance.

Main Results:

• Borazine clusters exhibit significant spin valve action with tunneling magnetoresistance ranging from 50-100%.
• A maximum current rectification ratio of 34 was observed for the borazine tetramer, indicating spin diode behavior.
• These properties are attributed to electrode spin orientation-induced charge density localization/delocalization.

Conclusions:

• Borazine clusters demonstrate multifunctional capabilities as both spin diodes and spin valves.
• The findings highlight the potential of borazine in developing novel spintronic devices.