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  1. Article ; Online: Manipulation of fractionalized charge in the metastable topologically entangled state of a doped Wigner crystal.

    Mraz, Anze / Diego, Michele / Kranjec, Andrej / Vodeb, Jaka / Karpov, Peter / Gerasimenko, Yaroslav / Ravnik, Jan / Vaskivskyi, Yevhenii / Venturini, Rok / Kabanov, Viktor / Lipovšek, Benjamin / Topič, Marko / Vaskivskyi, Igor / Mihailovic, Dragan

    Nature communications

    2023  Volume 14, Issue 1, Page(s) 8214

    Abstract: Metastability of many-body quantum states is rare and still poorly understood. An exceptional example is the low-temperature metallic state of the layered dichalcogenide 1T- ... ...

    Abstract Metastability of many-body quantum states is rare and still poorly understood. An exceptional example is the low-temperature metallic state of the layered dichalcogenide 1T-TaS
    Language English
    Publishing date 2023-12-11
    Publishing country England
    Document type Journal Article
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-023-43800-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Book ; Online: Unconventional photo-induced charge-density-wave dynamics in 2H-NbSe$_{2}$

    Venturini, Rok / Sarkar, Ankita / Sutar, Petra / Jagličić, Zvonko / Vaskivskyi, Yevhenii / Goreshnik, Evgeny / Mihailovic, Dragan / Mertelj, Tomaz

    2023  

    Abstract: We investigated temperature ($T$) dependent ultrafast near-infrared (NIR) transient reflectivity dynamics in coexisting superconducting (SC) and charge density wave (CDW) phases of two-dimensional 2H-NbSe$_{2}$ using NIR and visible excitations. With ... ...

    Abstract We investigated temperature ($T$) dependent ultrafast near-infrared (NIR) transient reflectivity dynamics in coexisting superconducting (SC) and charge density wave (CDW) phases of two-dimensional 2H-NbSe$_{2}$ using NIR and visible excitations. With visible pump-photon excitation (400 nm) we find a slow high-energy quasiparticle relaxation channel which is present in all phases. In the CDW phase, we observe a distinctive transient response component, irrespective of the pump-photon energy. The component is marked by the absence of coherent amplitude mode oscillations and a relatively slow, picosecond rise time, which is different than in most of the typical CDW materials. In the SC phase, another tiny component emerges that is associated with optical suppression of the SC phase. The transient reflectivity relaxation in the CDW phase is dominated by phonon diffusive processes with an estimated low-$T$ heat diffusion constant anisotropy of $\sim30$. Strong excitation of the CDW phase reveals a weakly non-thermal CDW order parameter (OP) suppression. Unlike CDW systems with a larger gap, where the optical OP suppression involves only a small fraction of phonon degrees of freedom, the OP suppression in 2H-NbSe$_{2}$ is characterised by the excitation of a large amount of phonon degrees of freedom and significantly slower dynamics.
    Keywords Condensed Matter - Superconductivity ; Condensed Matter - Materials Science
    Subject code 535
    Publishing date 2023-09-05
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

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  3. Article ; Online: Quantum billiards with correlated electrons confined in triangular transition metal dichalcogenide monolayer nanostructures.

    Ravnik, Jan / Vaskivskyi, Yevhenii / Vodeb, Jaka / Aupič, Polona / Vaskivskyi, Igor / Golež, Denis / Gerasimenko, Yaroslav / Kabanov, Viktor / Mihailovic, Dragan

    Nature communications

    2021  Volume 12, Issue 1, Page(s) 3793

    Abstract: Forcing systems through fast non-equilibrium phase transitions offers the opportunity to study new states of quantum matter that self-assemble in their wake. Here we study the quantum interference effects of correlated electrons confined in monolayer ... ...

    Abstract Forcing systems through fast non-equilibrium phase transitions offers the opportunity to study new states of quantum matter that self-assemble in their wake. Here we study 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. Scanning tunnelling microscopy of the electrons confined within equilateral triangles, whose dimensions are a few crystal unit cells on the side, reveals that the trajectories are strongly modified from free-electron states both by electronic correlations and confinement. Comparison of experiments with theoretical predictions of strongly correlated electron behaviour reveals that the confining geometry destabilizes the Wigner/Mott crystal ground state, resulting in mixed itinerant and correlation-localized states intertwined on a length scale of 1 nm. The work opens the path toward understanding the quantum transport of electrons confined in atomic-scale monolayer structures based on correlated-electron-materials.
    Language English
    Publishing date 2021-06-18
    Publishing country England
    Document type Journal Article
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-021-24073-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: A time-domain phase diagram of metastable states in a charge ordered quantum material.

    Ravnik, Jan / Diego, Michele / Gerasimenko, Yaroslav / Vaskivskyi, Yevhenii / Vaskivskyi, Igor / Mertelj, Tomaz / Vodeb, Jaka / Mihailovic, Dragan

    Nature communications

    2021  Volume 12, Issue 1, Page(s) 2323

    Abstract: 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 ... ...

    Abstract 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 functional properties of materials arise as a result of complex temporal changes in the material occurring on different timescales. Hitherto, such properties were not considered within the context of a temporally-evolving phase diagram, even though, under non-equilibrium conditions, different phases typically evolve on different timescales. Here, by using time-resolved optical techniques and femtosecond-pulse-excited scanning tunneling microscopy (STM), we track the evolution of the metastable states in a material that has been of wide recent interest, the quasi-two-dimensional dichalcogenide 1T-TaS
    Language English
    Publishing date 2021-04-19
    Publishing country England
    Document type Journal Article
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-021-22646-7
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: NMR, Raman, and DFT Study of Lyotropic Chromonic Liquid Crystals of Biomedical Interest: Tautomeric Equilibrium and Slow Self-Assembling in Sunset Yellow Aqueous Solutions.

    Kristinaitytė, Kristina / Maršalka, Aru Nas / Dagys, Laurynas / Aidas, Kęstutis / Doroshenko, Iryna / Vaskivskyi, Yevhenii / Chernolevska, Yelyzaveta / Pogorelov, Valeriy / Valevičienė, Nomeda Rima / Balevicius, Vytautas

    The journal of physical chemistry. B

    2018  Volume 122, Issue 12, Page(s) 3047–3055

    Abstract: Temperature and composition effects in Sunset Yellow FCF (SSY) aqueous solutions were studied by ... ...

    Abstract Temperature and composition effects in Sunset Yellow FCF (SSY) aqueous solutions were studied by the
    Language English
    Publishing date 2018--29
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1520-5207
    ISSN (online) 1520-5207
    DOI 10.1021/acs.jpcb.8b00350
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

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