title: Fast electronic resistance switching involving hidden charge density wave states.
abstract: The functionality of computer memory elements is currently based on multi-stability, driven either by locally manipulating the density of electrons in transistors or by switching magnetic or ferroelectric order. Another possibility is switching between metallic and insulating phases by the motion of ions, but their speed is limited by slow nucleation and inhomogeneous percolative growth. Here we demonstrate fast resistance switching in a charge density wave system caused by pulsed current injection. As a charge pulse travels through the material, it converts a commensurately ordered polaronic Mott insulating state in 1T-TaS2 to a metastable electronic state with textured domain walls, accompanied with a conversion of polarons to band states, and concurrent rapid switching from an insulator to a metal. The large resistance change, high switching speed (30 ps) and ultralow energy per bit opens the way to new concepts in non-volatile memory devices manipulating all-electronic states.
authors.affiliation: Complex matter F7, Jozef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia.|Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, SI-1000 Ljubljana, Slovenia.
authors.forename: I
authors.identifier: 0000-0003-4090-1471
authors.initials: I
authors.lastname: Vaskivskyi
authors.affiliation: Complex matter F7, Jozef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia.|Faculty of Electrical Engineering, University of Ljubljana, Tržaška 21, SI-1000 Ljubljana, Slovenia.
authors.forename: I A
authors.initials: IA
authors.lastname: Mihailovic
authors.affiliation: LPTMS-CNRS, UMR8626, Université Paris-Sud, F-91405 Orsay, France.|National University of Science and Technology MISiS, Leninski av. 4, Moscow 119049, Russia.
authors.forename: S
authors.initials: S
authors.lastname: Brazovskii
authors.affiliation: Complex matter F7, Jozef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia.
authors.forename: J
authors.initials: J
authors.lastname: Gospodaric
authors.affiliation: Complex matter F7, Jozef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia.
authors.forename: T
authors.initials: T
authors.lastname: Mertelj
authors.affiliation: Complex matter F7, Jozef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia.
authors.forename: D
authors.initials: D
authors.lastname: Svetin
authors.affiliation: Complex matter F7, Jozef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia.
authors.forename: P
authors.initials: P
authors.lastname: Sutar
authors.affiliation: Complex matter F7, Jozef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia.|Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, SI-1000 Ljubljana, Slovenia.|Jozef Stefan International Postgraduate School, Jamova 39, SI-1000 Ljubljana, Slovenia.
authors.forename: D
authors.initials: D
authors.lastname: Mihailovic