Publication
Static and dynamic spins in superconducting La2-xSrxCuO4: The Riso years
Related publications (48)
Quantum phase transitions and the role of impurity-substrate hybridization in Yu-Shiba-Rusinov states
Klaus Kern, Jacob Senkpiel, Haonan Huang
Spin-dependent scattering from magnetic impurities inside a superconductor gives rise to Yu-Shiba-Rusinov (YSR) states within the superconducting gap. They can be modeled by the largely equivalent Kondo or Anderson impurity models. The role of the magnetic ...
NATURE RESEARCH2020Structural characterization and magnetic properties of chromium jarosite KCr3(OD)(6)(SO4)(2)
Potassium chromium jarosite, KCr3(OH)(6)(SO4)(2) (Cr-jarosite), is considered a promising candidate to display spin liquid behavior due to the strong magnetic frustration imposed by the crystal structure. However, the ground state magnetic properties have ...
ROYAL SOC CHEMISTRY2020Multiphase magnetism in Yb2Ti2O7
We use neutron scattering to show that ferromagnetism and antiferromagnetism coexist in the low T state of the pyrochlore quantum magnet Yb2Ti2O7. While magnetic Bragg peaks evidence long-range static ferromagnetic order, inelastic scattering shows that sh ...
NATL ACAD SCIENCES2020Direct Observation of the Statics and Dynamics of Emergent Magnetic Monopoles in a Chiral Magnet
Henrik Moodysson Rønnow, Jonathan White
In the three-dimensional (3D) Heisenberg model, topological point defects known as spin hedgehogs behave as emergent magnetic monopoles, i.e., quantized sources and sinks of gauge fields that couple strongly to conduction electrons, and cause unconventiona ...
AMER PHYSICAL SOC2020Wave Vector Difference of Magnetic Bragg Reflections and Low Energy Magnetic Excitations in Charges-tripe Ordered La2NiO4.11
We report on the magnetism of charge-stripe ordered La2NiO4.11 +/- 0.01 by neutron scattering and mu SR. On going towards zero energy transfer there is an observed wave vector offset in the centring of the magnetic excitations and magnetic Bragg reflection ...
2019Robustness of Yu-Shiba-Rusinov resonances in the presence of a complex superconducting order parameter
Klaus Kern, Markus Etzkorn, Jacob Senkpiel
Robust quantum systems rely on having a protective environment with minimized relaxation channels. Super-conducting gaps play an important role in the design of such environments. The interaction of localized single spins with a conventional superconductor ...
AMER PHYSICAL SOC2019Reentrant magnetism at the borderline between long-range antiferromagnetic order and spin-glass behavior in the B-site disordered perovskite system Ca2-x SrxFeRuO6
We report on the coexistence of magnetic order and disorder in the atomically disordered double perovskites Ca2FeRuO6 and CaSrFeRuO6. Powder x-ray and neutron diffraction were used to investigate the crystal structure and magnetic ordering of these oxides. ...
AMER PHYSICAL SOC2018Charge transport properties of spin-orbit coupled materials in different correlation regimes
Soudabeh Sheikholharam Mashhadi
From recent advances in solid state physics, a novel material classification scheme has evolved
which is based on the concept of topology and provides an understanding of different phenomena
ranging from quantum transport to unusual flavors of superconduct ...
EPFL2018Neutron spectroscopy in the layered quantum magnet SrCu₂(BO₃)₂ and in transition metal phosphorus trisulfides (MPS₃)
Collective magnetic excitations are a fascinating aspect of condensed matter physics, where neutron scattering can provide valuable insight into the magnetic properties of physical realisations of model systems. This thesis focuses on the excitation spectr ...
EPFL2017Magnetic and dielectric order in the kagomelike francisite Cu3Bi(SeO3)(2)O2Cl
We report a single-crystal neutron diffraction and inelastic neutron scattering study on the spin 1/2 cuprate Cu3Bi(SeO3)(2)O2Cl, complemented by dielectric and electric polarization measurements. The study clarifies a number of open issues concerning this ...
Amer Physical Soc2017