A time-domain phase diagram of metastable states in a charge ordered quantum material

  title={A time-domain phase diagram of metastable states in a charge ordered quantum material},
  author={Janez Ravnik and Michele Diego and Yaroslav Gerasimenko and Yevhenii Vaskivskyi and Igor Vaskivskyi and T. Mertelj and Jaka Vodeb and Dragan Mihailovic},
  journal={Nature Communications},
Metastable self-organized electronic states in quantum materials are of fundamental importance, displaying emergent dynamical properties that may be used in new generations of sensors and memory devices. Such states are typically formed through phase transitions under non-equilibrium conditions and the final state is reached through processes that span a large range of timescales. Conventionally, phase diagrams of materials are thought of as static, without temporal evolution. However, many… 
4 Citations

Figures from this paper

Toward nonthermal control of excited quantum materials: framework and investigations by ultrafast electron scattering and imaging
Quantum material systems upon applying ultrashort laser pulses provide a rich platform to access excited material phases and their transformations that are not entirely like their equilibrium
Coherent phonon spectroscopy and interlayer modulation of charge density wave order in the kagome metal CsV3Sb5
The recent discovery of the AV3Sb5 (A = K, Rb, Cs) material family offers an exciting opportunity to investigate the interplay of correlations, topology, and superconductivity in kagome metals. The
Hidden in plain light
Light pulses transiently change a metal to an insulator by unveiling a hidden ordered state.
Quantum billiards with correlated electrons confined in triangular transition metal dichalcogenide monolayer nanostructures
This work studies the quantum interference effects of correlated electrons confined in monolayer quantum nanostructures, created by femtosecond laser-induced quench through a first-order polytype structural transition in a layered transition-metal dichalcogenide material.


Quantum jamming transition to a correlated electron glass in 1T-TaS2
It is shown that controlled optical or electromagnetic perturbations can lead to an amorphous metastable state of strongly correlated electrons in a quasi-two-dimensional dichalcogenide, which is stable up to room temperature and shows no signs of either local charge order or phase separation.
Controlling the metal-to-insulator relaxation of the metastable hidden quantum state in 1T-TaS2
The metastable state relaxation rate may be externally stabilized by substrate strain, thus opening the way to the design of nonvolatile ultrafast high-temperature memory devices based on switching between CDW states with large intrinsic differences in electrical resistance.
Fast non-thermal switching between macroscopic charge-ordered quantum states induced by charge injection
The functionality of logic and memory elements in current electronics is based on multi-stability, driven either by manipulating local concentrations of electrons in transistors, or by switching
Ultrafast Switching to a Stable Hidden Quantum State in an Electronic Crystal
A hidden (H) electronic state is found in a layered dichalcogenide crystal of 1T-TaS2 (the trigonal phase of tantalum disulfide) reached as a result of a quench caused by a single 35-femtosecond laser pulse.
Modeling of Evolution of a Complex Electronic System to an Ordered Hidden State: Application to Optical Quench in 1T-TaS2
Femtosecond techniques addressing phase transitions induced by optical pumps have allowed recently to put an ambitious goal to attend hidden states which are inaccessible and even unknown under
Cooperative photoinduced metastable phase control in strained manganite films.
Strain-engineered tuning of La2/3Ca1/3MnO3 into an emergent charge-ordered insulating phase with extreme photo-susceptibility is demonstrated, revealing that strain engineering can tune emergent functionality towards proximal macroscopic states to enable dynamic ultrafast optical phase switching and control.
Exploration of metastability and hidden phases in correlated electron crystals visualized by femtosecond optical doping and electron crystallography
These results elucidate key pathways of femtosecond electronic switching phenomena and provide an important new avenue to comprehensively investigate optical doping–induced transition states and phase diagrams of complex materials with wide-ranging applications.
Intertwined chiral charge orders and topological stabilization of the light-induced state of a prototypical transition metal dichalcogenide
The fundamental idea that the constituents of interacting many body systems in complex quantum materials may self-organise into long range order under highly non-equilibrium conditions leads to the
A metallic mosaic phase and the origin of Mott-insulating state in 1T-TaS2
It is discovered that the nature of the new phase is dictated by the stacking order, and the results shed fresh light on the origin of the Mott phase in 1T-TaS2.
Collapse of layer dimerization in the photo-induced hidden state of 1T-TaS2
The collapse of interlayer molecular orbital dimers during a collective electronic phase transition as a key mechanism for the IMT in 1T-TaS2 is identified.