Publications related to Self-organized criticality

Nanoporous Materials Can Tune the Critical Point of a Pure Substance

Berend Smit, Efrem Daniel Braun, Sondre Kvalvag Schnell

Molecular simulations and NMR relaxometry experiments demonstrate that pure benzene or xylene confined in isoreticular metal-organic frameworks (IRMOFs) exhibit true vapor-liquid phase equilibria where the effective critical point may be reduced by tuning ...

Wiley-Blackwell2015

Magnetic structure of the quasi-two-dimensional antiferromagnet NiPS3

Diane Virginie Marie Lançon

The magnetic structure of the quasi-two-dimensional antiferromagnet NiPS3 has been determined by magnetometry and a variety of neutron diffraction techniques. The experiments show that the samples must be carefully handled, as gluing influences the magneto ...

American Physical Society2015

Importance of XY anisotropy in Sr2IrO4 revealed by magnetic critical scattering experiments

Henrik Moodysson Rønnow

The magnetic critical scattering in Sr2IrO4 has been characterized using x-ray resonant magnetic scattering (XRMS) both below and above the three-dimensional antiferromagnetic ordering temperature T-N. The order parameter critical exponent below TN is foun ...

2015

Unconventional transformation of spin Dirac phase across a topological quantum phase transition

Jan Hugo Dil, Chang Liu

The topology of a topological material can be encoded in its surface states. These surface states can only be removed by a bulk topological quantum phase transition into a trivial phase. Here we use photoemission spectroscopy to image the formation of prot ...

Nature Publishing Group2015

Nonlinear Midinfrared Photothermal Spectroscopy Using Zharov Splitting and Quantum Cascade Lasers

Hatice Altug, Shyamsunder Erramilli, Mi Kyung Hong

We report on the Mid-infrared nonlinear photothermal spectrum of the neat liquid crystal 4-octyl-4'-cyanobiphenyl (8CB) using a tunable Quantum Cascade Laser (QCL). The nonequilibrium steady state characterized by the nonlinear photothermal infrared respon ...

2014

Large global solutions for energy supercritical nonlinear wave equations on $\R^{3+1}$

Joachim Krieger

For the radial energy-supercritical nonlinear wave equation

\Box u = -u_{tt} + \triangle u = \pm u^7

on

\R^{3+1}

, we prove the existence of a class of global in forward time

C^\infty

-smooth solutions with infinite critical Sobolev norm $\dot{H}^{\f ...

Springer Verlag2014

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

Lattice dynamics and antiferroelectricity in PbZrO3 tested by x-ray and Brillouin light scattering

Nava Setter, Alexander Tagantsev, Kaushik Vaideeswaran

We report the results of a comprehensive study of the critical dynamics of the classical perovskite antiferroelectric PbZrO3. The combination of inelastic x-ray and diffuse x-ray scattering techniques and Brillouin light scattering was used. It is found th ...

American Physical Society2014

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

Equivalence between Neighboring-Extremal Control and Self-Optimizing Control for the Steady-State Optimization of Dynamical Systems

Dominique Bonvin, Grégory François

The problem of steering a dynamical system toward optimal steady-state performance is considered. For this purpose, a static optimization problem can be formulated and solved. However, because of uncertainty, the optimal steady-state inputs can rarely be a ...

American Chemical Society2014

Self-organized criticality

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Nanoporous Materials Can Tune the Critical Point of a Pure Substance

Magnetic structure of the quasi-two-dimensional antiferromagnet NiPS3

Importance of XY anisotropy in Sr2IrO4 revealed by magnetic critical scattering experiments

Unconventional transformation of spin Dirac phase across a topological quantum phase transition

Nonlinear Midinfrared Photothermal Spectroscopy Using Zharov Splitting and Quantum Cascade Lasers

Large global solutions for energy supercritical nonlinear wave equations on $\R^{3+1}$

Critical scaling in the cubic helimagnet Cu2OSeO3

Lattice dynamics and antiferroelectricity in PbZrO3 tested by x-ray and Brillouin light scattering

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

Equivalence between Neighboring-Extremal Control and Self-Optimizing Control for the Steady-State Optimization of Dynamical Systems

Large global solutions for energy supercritical nonlinear wave equations on $\R^{3+1}$

Unconventional transformation of spin Dirac phase across a topological quantum phase transition

Importance of XY anisotropy in Sr2IrO4 revealed by magnetic critical scattering experiments

Magnetic structure of the quasi-two-dimensional antiferromagnet NiPS3

Nanoporous Materials Can Tune the Critical Point of a Pure Substance

Nonlinear Midinfrared Photothermal Spectroscopy Using Zharov Splitting and Quantum Cascade Lasers

Equivalence between Neighboring-Extremal Control and Self-Optimizing Control for the Steady-State Optimization of Dynamical Systems

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

Lattice dynamics and antiferroelectricity in PbZrO3 tested by x-ray and Brillouin light scattering

Critical scaling in the cubic helimagnet Cu2OSeO3