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  1. Artikel ; Online: Fractionalized Prethermalization in a Driven Quantum Spin Liquid.

    Jin, Hui-Ke / Knolle, Johannes / Knap, Michael

    Physical review letters

    2023  Band 130, Heft 22, Seite(n) 226701

    Abstract: Quantum spin liquids subject to a periodic drive can display fascinating nonequilibrium heating behavior because of their emergent fractionalized quasiparticles. Here, we investigate a driven Kitaev honeycomb model and examine the dynamics of emergent ... ...

    Abstract Quantum spin liquids subject to a periodic drive can display fascinating nonequilibrium heating behavior because of their emergent fractionalized quasiparticles. Here, we investigate a driven Kitaev honeycomb model and examine the dynamics of emergent Majorana matter and Z_{2} flux excitations. We uncover a distinct two-step heating profile-dubbed fractionalized prethermalization-and a quasistationary state with vastly different temperatures for the matter and the flux sectors. We argue that this peculiar prethermalization behavior is a consequence of fractionalization. Furthermore, we discuss an experimentally feasible protocol for preparing a zero-flux initial state of the Kiteav honeycomb model with a low energy density, which can be used to observe fractionalized prethermalization in quantum information processing platforms.
    Mesh-Begriff(e) Cognition ; Food ; Heating
    Sprache Englisch
    Erscheinungsdatum 2023-06-16
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.130.226701
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  2. Artikel ; Online: Collective effects in an incompressible electronic liquid.

    Miao, Jian-Jian / Jin, Hui-Ke / Zhou, Yi

    National science review

    2022  Band 10, Heft 6, Seite(n) nwac251

    Abstract: Starting from Landau's kinetic equation, we show that an electronic liquid ... ...

    Abstract Starting from Landau's kinetic equation, we show that an electronic liquid in
    Sprache Englisch
    Erscheinungsdatum 2022-10-23
    Erscheinungsland China
    Dokumenttyp Journal Article
    ZDB-ID 2745465-4
    ISSN 2053-714X ; 2053-714X
    ISSN (online) 2053-714X
    ISSN 2053-714X
    DOI 10.1093/nsr/nwac251
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  3. Artikel ; Online: Unveiling the S=3/2 Kitaev honeycomb spin liquids.

    Jin, Hui-Ke / Natori, W M H / Pollmann, F / Knolle, J

    Nature communications

    2022  Band 13, Heft 1, Seite(n) 3813

    Abstract: The S=3/2 Kitaev honeycomb model (KHM) is a quantum spin liquid (QSL) state coupled to a static ... ...

    Abstract The S=3/2 Kitaev honeycomb model (KHM) is a quantum spin liquid (QSL) state coupled to a static Z
    Sprache Englisch
    Erscheinungsdatum 2022-07-02
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-022-31503-0
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  4. Buch ; Online: Single-hole spectra of Kitaev spin liquids

    Kadow, Wilhelm / Jin, Hui-Ke / Knolle, Johannes / Knap, Michael

    From dynamical Nagaoka ferromagnetism to spin-hole fractionalization

    2023  

    Abstract: The dynamical response of a quantum spin liquid upon injecting a hole is a pertinent open question. In experiments, the hole spectral function, measured momentum-resolved in angle-resolved photoemission spectroscopy (ARPES) or locally in scanning ... ...

    Abstract The dynamical response of a quantum spin liquid upon injecting a hole is a pertinent open question. In experiments, the hole spectral function, measured momentum-resolved in angle-resolved photoemission spectroscopy (ARPES) or locally in scanning tunneling microscopy (STM), can be used to identify spin liquid materials. In this study, we employ tensor network methods to simulate the time evolution of a single hole doped into the Kitaev spin-liquid ground state and reveal two fundamentally different scenarios. For ferromagnetic spin couplings, the spin liquid is highly susceptible to hole doping: a Nagaoka ferromagnet forms dynamically around the doped hole, even at weak coupling. By contrast, in the case of antiferromagnetic spin couplings, the hole spectrum demonstrates an intricate interplay between charge, spin, and flux degrees of freedom, best described by a parton mean-field ansatz of fractionalized holons and spinons. Moreover, we find a good agreement of our numerical results to the analytically solvable case of slow holes. Our results demonstrate that dynamical hole spectral functions provide rich information on the structure of fractionalized quantum spin liquids.

    Comment: 16 pages, 10 figures
    Schlagwörter Condensed Matter - Strongly Correlated Electrons ; Condensed Matter - Materials Science
    Erscheinungsdatum 2023-09-26
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    Dokumenttyp Buch ; Online
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  5. Buch ; Online: Kinetic Ferromagnetism and Topological Magnons of the Hole-Doped Kitaev Spin Liquid

    Jin, Hui-Ke / Kadow, Wilhelm / Knap, Michael / Knolle, Johannes

    2023  

    Abstract: We study the effect of hole doping on the Kitaev spin liquid (KSL) and find that for ferromagnetic (FM) Kitaev exchange $K$ the system is very susceptible to the formation of a FM spin polarization. Through density matrix renormalization group (DMRG) ... ...

    Abstract We study the effect of hole doping on the Kitaev spin liquid (KSL) and find that for ferromagnetic (FM) Kitaev exchange $K$ the system is very susceptible to the formation of a FM spin polarization. Through density matrix renormalization group (DMRG) simulations on finite systems, we uncover that the introduction of a single hole with a hopping strength of just $t\sim{}0.28K$ is enough to disrupt fractionalization and polarize the spins in the [001] direction due to an order-by-disorder mechanism. Taking into account a material relevant FM anisotropic spin exchange $\varGamma$ drives the polarization towards the [111] direction via a reorientation transition into a topological FM state with chiral magnon excitations. We develop a parton mean-field theory incorporating fermionic holons and bosonic spinons/magnons, which accounts for the doping induced FM phases and topological magnon excitations. We discuss experimental signatures and implications for Kitaev candidate materials.

    Comment: 5.5 pages, 4 figures + supplementary materials
    Schlagwörter Condensed Matter - Strongly Correlated Electrons ; Condensed Matter - Materials Science
    Thema/Rubrik (Code) 530
    Erscheinungsdatum 2023-09-26
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    Dokumenttyp Buch ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  6. Buch ; Online: Prethermal nematic order and staircase heating in a driven frustrated Ising magnet with dipolar interactions

    Jin, Hui-Ke / Pizzi, Andrea / Knolle, Johannes

    2022  

    Abstract: Many-body systems subject to a high-frequency drive can show intriguing thermalization behavior. Prior to heating to a featureless infinite-temperature state, these systems can spend an exponentially long time in prethermal phases characterized by ... ...

    Abstract Many-body systems subject to a high-frequency drive can show intriguing thermalization behavior. Prior to heating to a featureless infinite-temperature state, these systems can spend an exponentially long time in prethermal phases characterized by various kinds of order. Here, we uncover the rich non-equilibrium phase diagram of a driven frustrated two-dimensional Ising magnet with competing short-range ferromagnetic and long-range dipolar interactions. We show that the ordered stripe and nematic phases, which appear in equilibrium as a function of temperature, underpin subsequent prethermal phases in a new multi-step heating process en route towards the ultimate heat death. We discuss implications for experiments on ferromagnetic thin films and other driving induced phenomena in frustrated magnets.

    Comment: 4 pages + 2 figures
    Schlagwörter Condensed Matter - Statistical Mechanics ; Condensed Matter - Strongly Correlated Electrons
    Thema/Rubrik (Code) 612
    Erscheinungsdatum 2022-04-04
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    Dokumenttyp Buch ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  7. Artikel ; Online: Majorana zero modes and long range edge correlation in interacting Kitaev chains: analytic solutions and density-matrix-renormalization-group study.

    Miao, Jian-Jian / Jin, Hui-Ke / Zhang, Fu-Chun / Zhou, Yi

    Scientific reports

    2018  Band 8, Heft 1, Seite(n) 488

    Abstract: We study Kitaev model in one-dimension with open boundary condition by using exact analytic methods for non-interacting system at zero chemical potential as well as in the symmetric case of Δ = t, and by using density-matrix-renormalization-group method ... ...

    Abstract We study Kitaev model in one-dimension with open boundary condition by using exact analytic methods for non-interacting system at zero chemical potential as well as in the symmetric case of Δ = t, and by using density-matrix-renormalization-group method for interacting system with nearest neighbor repulsion interaction. We suggest and examine an edge correlation function of Majorana fermions to characterize the long range order in the topological superconducting states and study the phase diagram of the interating Kitaev chain.
    Sprache Englisch
    Erscheinungsdatum 2018-01-11
    Erscheinungsland England
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-017-17699-y
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  8. Artikel ; Online: Exact Solution for the Interacting Kitaev Chain at the Symmetric Point.

    Miao, Jian-Jian / Jin, Hui-Ke / Zhang, Fu-Chun / Zhou, Yi

    Physical review letters

    2017  Band 118, Heft 26, Seite(n) 267701

    Abstract: The Kitaev chain model with a nearest neighbor interaction U is solved exactly at the symmetry point Δ=t and chemical potential μ=0 in an open boundary condition. By applying two Jordan-Wigner transformations and a spin rotation, such a symmetric ... ...

    Abstract The Kitaev chain model with a nearest neighbor interaction U is solved exactly at the symmetry point Δ=t and chemical potential μ=0 in an open boundary condition. By applying two Jordan-Wigner transformations and a spin rotation, such a symmetric interacting model is mapped onto a noninteracting fermion model, which can be diagonalized exactly. The solutions include a topologically nontrivial phase at |U|<t and a topologically trivial phase at |U|>t. The two phases are related by dualities. Quantum phase transitions in the model are studied with the help of the exact solution.
    Sprache Englisch
    Erscheinungsdatum 2017-06-30
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.118.267701
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  9. Artikel ; Online: Evidence for nematic superconductivity of topological surface states in PbTaSe

    Le, Tian / Sun, Yue / Jin, Hui-Ke / Che, Liqiang / Yin, Lichang / Li, Jie / Pang, Guiming / Xu, Chunqiang / Zhao, Lingxiao / Kittaka, Shunichiro / Sakakibara, Toshiro / Machida, Kazushige / Sankar, Raman / Yuan, Huiqiu / Chen, Genfu / Xu, Xiaofeng / Li, Shiyan / Zhou, Yi / Lu, Xin

    Science bulletin

    2020  Band 65, Heft 16, Seite(n) 1349–1355

    Abstract: Spontaneous symmetry breaking has been a paradigm to describe the phase transitions in condensed matter physics. In addition to the continuous electromagnetic gauge symmetry, an unconventional superconductor can break discrete symmetries simultaneously, ... ...

    Abstract Spontaneous symmetry breaking has been a paradigm to describe the phase transitions in condensed matter physics. In addition to the continuous electromagnetic gauge symmetry, an unconventional superconductor can break discrete symmetries simultaneously, such as time reversal and lattice rotational symmetry. In this work we report a characteristic in-plane 2-fold behaviour of the resistive upper critical field and point-contact spectra on the superconducting semimetal PbTaSe
    Sprache Englisch
    Erscheinungsdatum 2020-04-30
    Erscheinungsland Netherlands
    Dokumenttyp Journal Article
    ZDB-ID 2816140-3
    ISSN 2095-9281 ; 2095-9273
    ISSN (online) 2095-9281
    ISSN 2095-9273
    DOI 10.1016/j.scib.2020.04.039
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