In situ control of diamagnetism by electric current in Ca${}_3$(Ru${}_{1-x}$Ti${}_x$)${}_2$O${}_7$

Abstract

Non-equilibrium steady state (NESS) conditions induced by DC current can alter the physical properties of strongly correlated electron systems (SCES). In this regard, it was recently shown that DC current can trigger novel electronic states, such as current-induced diamagnetism, which cannot be realized in equilibrium conditions. However, reversible control of diamagnetism has not been achieved yet. Here, we demonstrate reversible in situ control between a Mott insulating state and a diamagnetic semimetal-like state by DC current in the Ti-substituted bilayer ruthenate Ca${}_3$(Ru${}_{1-x}$Ti${}_x$)${}_2$O${}_7$ ($x=0.5$%). By performing simultaneous magnetic and resistive measurements, we map out the temperature vs current-density phase diagram in the NESS of this material. The present results open up the possibility of creating novel electronic states in a variety of SCES under DC current.

Main text (5 pages, 4 figures) + Supplementary Materials (5 pages, 9 figures)

References in corpus (3)

• Resistive switching induced by electronic avalanche breakdown in GaTa${}_4$Se${}_{8-x}$Te${}_x$ narrow gap Mott Insulators
• Electrical Control of Structural and Physical Properties via Strong Spin-Orbit Interactions in Sr2IrO4
• Theory of Electron Transport near Anderson-Mott Transitions

Cited by in corpus (6)

• Emergence of a metallic meta-stable phase induced by electrical current in Ca_2RuO_4
• Role of local temperature in the current-driven metal-insulator transition of Ca2RuO4
• Towards Electrical-Current Control of Quantum States in Spin-Orbit-Coupled Matter
• Diamagnetic-like response from localised heating of a paramagnetic material
• Resonant Inelastic X-ray Scattering Study of Ca${}_3$Ru${}_2$O${}_7$
• Spatial inhomogeneity and the metal-insulator transition in Ca${}_3$(Ru${}_{1-x}$Ti${}_x$)${}_2$O${}_7$