Publications related to Neutron Scattering Investigations of Weakly Coupled and Weakly Connected Antiferromagnets

Weak Crystallization of Fluctuating Skyrmion Textures in MnSi

We report an experimental study of the emergence of nontrivial topological winding and long-range order across the paramagnetic-to-skyrmion lattice transition in the transition metal helimagnet MnSi. Combining measurements of the susceptibility with small- ...

2019

Competition between intermediate plaquette phases in SrCu2(BO3)(2) under pressure

Frédéric Mila, Carolin Boos

Building on the growing evidence based on NMR, magnetization, neutron scattering, electron spin resonance, and specific heat that, under pressure, SrCu2(BO3)(2) has an intermediate phase between the dimer and the Neel phase, we study the competition betwee ...

AMER PHYSICAL SOC2019

Reentrant magnetism at the borderline between long-range antiferromagnetic order and spin-glass behavior in the B-site disordered perovskite system Ca2-x SrxFeRuO6

Philip Pattison

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 SOC2018

Spin-wave resonances in bismuth orthoferrite at high temperatures

Jean-Philippe Ansermet, Arnaud Magrez, Marcin Bialek

Spin-wave resonances in pelletized powder of bismuth orthoferrite (BiFeO3) were studied in transmission spectroscopy at frequencies of 0.1–0.75 THz and in the temperature range of 300–650 K. A vector network analyzer with frequency extenders was used in co ...

2018

On-the-fly ab initio semiclassical evaluation of time-resolved electronic spectra

Jiri Vanicek, Tomislav Begusic, Julien Roulet

We present a methodology for computing vibrationally and time-resolved pump-probe spectra, which takes into account all vibrational degrees of freedom and is based on the combination of the thawed Gaussian approximation with on-the-fly ab initio evaluation ...

AMER INST PHYSICS2018

Neutron spectroscopy in the layered quantum magnet SrCu₂(BO₃)₂ and in transition metal phosphorus trisulfides (MPS₃)

Diane Virginie Marie Lançon

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 ...

EPFL2017

Magnetic and dielectric order in the kagomelike francisite Cu3Bi(SeO3)(2)O2Cl

Helmuth Berger

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

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

J1-J2 square lattice antiferromagnetism in the orbitally quenched insulator MoOPO4

László Forró, Henrik Moodysson Rønnow, Arnaud Magrez, Oleg Yazyev, Ivica Zivkovic, Helmuth Berger, Bálint Náfrádi, Lin Yang, Peter Babkevich, Noore Elahi Shaik

We report magnetic and thermodynamic properties of a 4d1 (Mo5+) magnetic insulator MoOPO4 single crystal, which realizes a J1−J2 Heisenberg spin-1/2 model on a stacked square lattice. The specific-heat measurements show a magnetic transition at 16 K which ...

Amer Physical Soc2017

Bound States and Field-Polarized Haldane Modes in a Quantum Spin Ladder

Bruce Normand, Christian Rüegg, Pierre Bouillot, Daniel Biner

The challenge of one-dimensional systems is to understand their physics beyond the level of known elementary excitations. By high-resolution neutron spectroscopy in a quantum spin-ladder material, we probe the leading multiparticle excitation by characteri ...

Amer Physical Soc2017

Neutron Scattering Investigations of Weakly Coupled and Weakly Connected Antiferromagnets

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Weak Crystallization of Fluctuating Skyrmion Textures in MnSi

Competition between intermediate plaquette phases in SrCu2(BO3)(2) under pressure

Reentrant magnetism at the borderline between long-range antiferromagnetic order and spin-glass behavior in the B-site disordered perovskite system Ca2-x SrxFeRuO6

Spin-wave resonances in bismuth orthoferrite at high temperatures

On-the-fly ab initio semiclassical evaluation of time-resolved electronic spectra

Neutron spectroscopy in the layered quantum magnet SrCu₂(BO₃)₂ and in transition metal phosphorus trisulfides (MPS₃)

Magnetic and dielectric order in the kagomelike francisite Cu3Bi(SeO3)(2)O2Cl

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

J1-J2 square lattice antiferromagnetism in the orbitally quenched insulator MoOPO4

Bound States and Field-Polarized Haldane Modes in a Quantum Spin Ladder

Weak Crystallization of Fluctuating Skyrmion Textures in MnSi

Spin-wave resonances in bismuth orthoferrite at high temperatures

Reentrant magnetism at the borderline between long-range antiferromagnetic order and spin-glass behavior in the B-site disordered perovskite system Ca2-x SrxFeRuO6

Competition between intermediate plaquette phases in SrCu2(BO3)(2) under pressure

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

On-the-fly ab initio semiclassical evaluation of time-resolved electronic spectra

Neutron spectroscopy in the layered quantum magnet SrCu₂(BO₃)₂ and in transition metal phosphorus trisulfides (MPS₃)

J1-J2 square lattice antiferromagnetism in the orbitally quenched insulator MoOPO4

Magnetic and dielectric order in the kagomelike francisite Cu3Bi(SeO3)(2)O2Cl

Bound States and Field-Polarized Haldane Modes in a Quantum Spin Ladder