Abstract
shows various electronic phases including complex charge density waves (CDWs), Mott insulator, superconductor, and spin liquid. In addition to such thermodynamically stable states, thermally inaccessible metastable metallic states can be induced by means of current. We investigated the nonlinear, nonvolatile current-induced phase transition to the metastable state by performing noise spectroscopy measurements. We found a broadband noise emerging above the threshold current for the transition. This indicates the sliding motion of the current-induced metastable CDWs, which are stabilized after CDW sheets slide to form another stacking structure with metallic characters. Nonvolatility is likely attributed to the commensurability of CDWs.
- Received 13 May 2019
- Revised 9 September 2019
DOI:https://doi.org/10.1103/PhysRevB.100.155125
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