Publications related to Critical fluctuations in the spin-orbit Mott insulator Sr3Ir2O7

Building Composite Iron-Manganese Oxide Flowerlike Nanostructures: A Detailed Magnetic Study

Here we show that it is possible to produce different magnetic core multiple shell heterostructures from monodisperse Fe3O4 spherical magnetic seeds by finely controlling the amount of a manganese precursor and using, in a smart and simple way, a cation-ex ...

Amer Chemical Soc2017

Anisotropic spin-flip-induced multiferroic behavior in kagome Cu3Bi(SeO3)(2)O2Cl

Helmuth Berger

Compared to the previous report on Cu3Bi(SeO3)(2)O2X (X = Cl, Br) [V. Gnezdilov et al., (arXiv: 1604.04249)], where no dielectric anomaly was observed without magnetic field near T-N similar to 25.6K, we further present the dielectric behaviors without and ...

Amer Physical Soc2017

Anisotropic pressure effects on the Kagome Cu3Bi(SeO3)(2)O2Cl metamagnet

Helmuth Berger

The anisotropic spin-flip-induced multiferroic property of the Kagome single-crystal Cu3Bi(SeO3)(2)O2Cl was recently investigated. The doping effects on the structural and magnetic properties of Cu3Bi(Se1-xTexO3)(2)O2Cl (0

Iop Publishing Ltd2017

Synthesis and Physical Properties of 3d, 4d and 5d Transition Metal Compounds

Lin Yang

In this thesis I study the synthesis and basic physical properties characterization on 3

d

, 4

d

and 5

d

transition metal compounds. Great success has been obtained in 3

d

transition metal compounds, in which the electric states are well localized due t ...

EPFL2017

Magnetic anisotropy in the frustrated spin-chain compound beta-TeVO4

Helmuth Berger

Isotropic and anisotropic magnetic behavior of the frustrated spin-chain compound beta-TeVO4 is reported. Three magnetic transitions observed in zero magnetic field are tracked in fields applied along different crystallographic directions using magnetizati ...

Amer Physical Soc2016

Spin dynamics and magnetoelectric properties of the coupled-spin tetrahedral compound Cu2Te2O5Cl2

Helmuth Berger

We report on the spin dynamics and discovery of magnetoelectricity in the coupled-spin tetrahedral compound Cu2Te2O5Cl2. Te-125 NMR measurements show an anomalous resonance frequency shift and a signal wipe-out phenomenon around the Neel temperature T-N = ...

Amer Physical Soc2014

Critical scaling in the cubic helimagnet Cu2OSeO3

Henrik Moodysson Rønnow, Ivica Zivkovic, Helmuth Berger, Jonathan White, Krunoslav Prsa

We present a detailed ac susceptibility investigation of the fluctuation regime in the insulating cubic helimagnet Cu2OSeO3. For magnetic fields mu H-0 >= 200 mT, and over a wide temperature (T) range, the system behaves according to the scaling relations ...

Amer Physical Soc2014

Dipolar Antiferromagnetism and Quantum Criticality in LiErF4

Henrik Moodysson Rønnow, Gabriel Aeppli, Bastien Dalla Piazza, Julian Piatek, Neda Nikseresht Ghanepour, Nikolay Tsyrulin, Conradin Kraemer

Magnetism has been predicted to occur in systems in which dipolar interactions dominate exchange. We present neutron scattering, specific heat, and magnetic susceptibility data for LiErF4, establishing it as a model dipolar-coupled antiferromagnet with pla ...

2012

Classical and Quantum Critical Phenomena in the Dipolar Antiferromagnet LiErF4

Neda Nikseresht Ghanepour

The collective behavior of systems consisting of interacting dipoles is a subject of considerable studies. The anisotropic nature of such interactions opens an arena to explore fundamental questions in correlated electron physics, ranging from quantum enta ...

EPFL2012

Magnetoelectric Coupling in Single Crystal Cu2OSeO3 Studied by a Novel Electron Spin Resonance Technique

Helmuth Berger

The magnetoelectric (ME) coupling on spin-wave resonances in single-crystal Cu2OSeO3 was studied by a novel technique using electron spin resonance combined with electric field modulation. An external electric field E induces a magnetic field component mu ...

2012

Critical fluctuations in the spin-orbit Mott insulator Sr3Ir2O7

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Building Composite Iron-Manganese Oxide Flowerlike Nanostructures: A Detailed Magnetic Study

Anisotropic spin-flip-induced multiferroic behavior in kagome Cu3Bi(SeO3)(2)O2Cl

Anisotropic pressure effects on the Kagome Cu3Bi(SeO3)(2)O2Cl metamagnet

Synthesis and Physical Properties of 3d, 4d and 5d Transition Metal Compounds

Magnetic anisotropy in the frustrated spin-chain compound beta-TeVO4

Spin dynamics and magnetoelectric properties of the coupled-spin tetrahedral compound Cu2Te2O5Cl2

Critical scaling in the cubic helimagnet Cu2OSeO3

Dipolar Antiferromagnetism and Quantum Criticality in LiErF4

Classical and Quantum Critical Phenomena in the Dipolar Antiferromagnet LiErF4

Magnetoelectric Coupling in Single Crystal Cu2OSeO3 Studied by a Novel Electron Spin Resonance Technique

Building Composite Iron-Manganese Oxide Flowerlike Nanostructures: A Detailed Magnetic Study

Spin dynamics and magnetoelectric properties of the coupled-spin tetrahedral compound Cu2Te2O5Cl2

Magnetoelectric Coupling in Single Crystal Cu2OSeO3 Studied by a Novel Electron Spin Resonance Technique

Anisotropic pressure effects on the Kagome Cu3Bi(SeO3)(2)O2Cl metamagnet

Synthesis and Physical Properties of 3d, 4d and 5d Transition Metal Compounds

Magnetic anisotropy in the frustrated spin-chain compound beta-TeVO4

Critical scaling in the cubic helimagnet Cu2OSeO3

Dipolar Antiferromagnetism and Quantum Criticality in LiErF4

Classical and Quantum Critical Phenomena in the Dipolar Antiferromagnet LiErF4

Anisotropic spin-flip-induced multiferroic behavior in kagome Cu3Bi(SeO3)(2)O2Cl