Publications related to Fractional quantum Hall effect

Resonant torsion magnetometry in anisotropic quantum materials

Philip Johannes Walter Moll, Maja Deborah Bachmann, Kent Robert Shirer, Amelia Emily-Kay Estry

Unusual behavior in quantum materials commonly arises from their effective low-dimensional physics, reflecting the underlying anisotropy in the spin and charge degrees of freedom. Here we introduce the magnetotropic coefficient k = partial derivative F-2/p ...

2018

Topological phase transitions driven by strain in monolayer tellurium

Oleg Yazyev, Quansheng Wu, Wei Zhang

Two-dimensional (2D) Xenes of a single type of element can offer fascinating electronic properties, such as massless Dirac fermions for extremely high charge-carrier mobility and topological insulators for dissipationless electron transport. However, the r ...

AMER PHYSICAL SOC2018

Probing multi-spinon excitations outside of the two-spinon continuum in the antiferromagnetic spin chain cuprate Sr2CuO3

Henrik Moodysson Rønnow, Thorsten Schmitt, Martin Mourigal

One-dimensional (1D) magnetic insulators have attracted significant interest as a platform for studying quasiparticle fractionalization, quantum criticality, and emergent phenomena. The spin-1/2 Heisenberg chain with antiferromagnetic nearest neighbour int ...

2018

Transport waves as crystal excitations

Nicola Marzari, Andrea Cepellotti

We introduce the concept of transportwaves by showing that the linearized Boltzmann transport equation admits excitations in the form of waves that have well-defined dispersion relations and decay times. Crucially, these waves do not represent single-parti ...

Amer Physical Soc2017

Anomalous Nernst effect in Ir22Mn78/Co20Fe60B20/MgO layers with perpendicular magnetic anisotropy

Jean-Philippe Ansermet, Haiming Yu, Sa Tu, Junfeng Hu, Jianyu Zhang, Yao Zhang, Xiangrong Wang

The anomalous Nernst effect in a perpendicularly magnetized Ir22Mn78/Co20Fe60B20/MgO thin film is measured using well-defined in-plane temperature gradients. The anomalous Nernst coefficient reaches 1.8 mu V/K at room temperature, which is almost 50 times ...

American Institute of Physics2017

Haldane quantum Hall effect for light in a dynamically modulated array of resonators

Vincenzo Savona, Momchil Minkov

Topological insulators have attracted abundant attention for a variety of reasons-notably, the possibility for lossless energy transport through edge states "protected" against disorder. Topological effects such as the quantum Hall state can be induced thr ...

Optical Soc Amer2016

Dramatic pressure-driven enhancement of bulk skyrmion stability

Henrik Moodysson Rønnow, Arnaud Magrez, Ivica Zivkovic, Helmuth Berger, Jonathan White

The recent discovery of magnetic skyrmion lattices initiated a surge of interest in the scientific community. Several novel phenomena have been shown to emerge from the interaction of conducting electrons with the skyrmion lattice, such as a topological Ha ...

Nature Publishing Group2016

Topological Aspects of Symmetry Breaking in Triangular-Lattice Ising Antiferromagnets

Frédéric Mila, Andrew James Smerald

Using a specially designed Monte Carlo algorithm with directed loops, we investigate the triangular lattice Ising antiferromagnet with coupling beyond the nearest neighbors. We show that the first-order transition from the stripe state to the paramagnet ca ...

2016

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Fractional quantum Hall effect

Resonant torsion magnetometry in anisotropic quantum materials

Topological phase transitions driven by strain in monolayer tellurium

Probing multi-spinon excitations outside of the two-spinon continuum in the antiferromagnetic spin chain cuprate Sr2CuO3

Electronic Transport in 2D Materials with Strong Spin-orbit Coupling

Ab initio study of electron energy loss spectra of bulk bismuth up to 100 eV

Transport waves as crystal excitations

Anomalous Nernst effect in Ir22Mn78/Co20Fe60B20/MgO layers with perpendicular magnetic anisotropy

Haldane quantum Hall effect for light in a dynamically modulated array of resonators

Dramatic pressure-driven enhancement of bulk skyrmion stability

Topological Aspects of Symmetry Breaking in Triangular-Lattice Ising Antiferromagnets

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Probing multi-spinon excitations outside of the two-spinon continuum in the antiferromagnetic spin chain cuprate Sr2CuO3

Topological Aspects of Symmetry Breaking in Triangular-Lattice Ising Antiferromagnets

Electronic Transport in 2D Materials with Strong Spin-orbit Coupling

Transport waves as crystal excitations

Haldane quantum Hall effect for light in a dynamically modulated array of resonators

Topological phase transitions driven by strain in monolayer tellurium

Resonant torsion magnetometry in anisotropic quantum materials

Anomalous Nernst effect in Ir22Mn78/Co20Fe60B20/MgO layers with perpendicular magnetic anisotropy

Ab initio study of electron energy loss spectra of bulk bismuth up to 100 eV

Dramatic pressure-driven enhancement of bulk skyrmion stability