Current driven insulator-to-metal transition without Mott breakdown in Ca$_2$RuO$_4$

Understand

The electrical control of a material's conductivity is at the heart of modern electronics.

• Conventionally, this control is achieved by tuning the density of mobile charge carriers.
• A completely different approach is possible in Mott insulators such as Ca$_2$RuO$_4$, where an insulator-to-metal transition (IMT) can be induced by a weak electric field or current.
• This phenomenon has numerous potential applications in, e.g., neuromorphic computing.