News

  • 11.09.2019

    {Surface states and Rashba-type spin polarization in antiferromagnetic MnBi2Te4(0001)}

    {The layered van der Waals antiferromagnet MnBi2Te4 has been predicted to combine the band ordering of archetypical topological insulators such as Bi2Te3 with the magnetism of Mn, making this material a viable candidate for the realization of various magnetic topological states.

  • 09.09.2019

    {Transport properties of topologically non-trivial bismuth tellurobromides BinTeBr}

    Temperature-dependent transport properties of the recently discovered layered bismuth-rich tellurobromides BinTeBr (n = 2, 3) are investigated for the first time.

  • 05.09.2019

    Superconductivity of Organic Charge-Transfer Salts

    Forty years after the discovery of the first organic superconductor, the nature of the superconducting state in these materials is still not fully understood.

  • 03.09.2019

    {Non-Abelian statistics in one dimension: Topological momentum spacings and SU(2) level-k fusion

    We use a family of critical spin chain models discovered recently by one of us {[}M. Greiter, Mapping of Parent Hamiltonians (Springer, Berlin, 2011)].

  • 22.08.2019

    Structural and magnetic properties of $3d$ transition metal oxide chains on the (001) surfaces of Ir

    We present a survey of the structural and magnetic properties of submonolayer transition metal dioxides on the (001) surfaces of the heavy face-centered cubic noble metals Ir and Pt performed by spin-averaged scanning tunneling microscopy (STM) and spin-polarized (SP) STM.

  • 09.08.2019

    Correlated Quantum Tunneling of Monopoles in Spin Ice

    The spin ice materials Ho2Ti2O7 and Dy2Ti2O7 are by now perhaps the best-studied classical frustrated magnets.

  • 09.08.2019

    Phase-tunable second-order topological superconductor

    Two-dimensional second-order topological superconductors (SOTSCs) have gapped bulk and edge states, with zero-energy Majorana bound states localized at corners.

  • 07.08.2019

    Reciprocal skin effect and its realization in a topolectrical circuit

    A system is non-Hermitian when it exchanges energy with its environment and non-reciprocal when it behaves differently upon the interchange of input and response.

  • 06.08.2019

    Evidence for the Single-Site Quadrupolar Kondo Effect in the Dilute Non-Kramers System ${\mathrm{Y}}

    Acoustic signatures of the single-site quadrupolar Kondo effect in Y0.966Pr0.034Ir2Zn20 are presented.

  • 06.08.2019

    The Dirac nodal line network in non-symmorphic rutile semimetal RuO$_2$

    We employ angle resolved photoemission spectroscopy (ARPES) to investigate the Fermi surface of RuO$_2$.

  • 05.08.2019

    Berry curvature unravelled by the anomalous Nernst effect in ${\mathrm{Mn}}_{3}\mathrm{Ge}$

    The discovery of topological quantum materials represents a striking innovation in modern condensed matter physics with remarkable fundamental and technological implications.

  • 03.08.2019

    Zeeman spin-orbit coupling and magnetic quantum oscillations in antiferromagnetic conductors

    We find that the N\'eel state of the layered organic conductor $\kappa$-(BETS)$_2$FeBr$_4$ shows no spin modulation of the Shubnikov-de Haas oscillations, contrary to the paramagnetic state of the same material.

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