Statics and dynamics of skyrmions interacting with disorder and nanostructures

C Reichhardt, CJO Reichhardt, MV Milošević - Reviews of Modern Physics, 2022 - APS
Magnetic skyrmions are topologically stable nanoscale particlelike objects that were
discovered in 2009. Since that time, intense research interest in the field has led to the …

Colloquium: Ice rule and emergent frustration in particle ice and beyond

A Ortiz-Ambriz, C Nisoli, C Reichhardt… - Reviews of Modern …, 2019 - APS
Geometric frustration and the ice rule are two concepts that are intimately connected and
widespread across condensed matter. The first refers to the inability of a system to satisfy …

Rewritable artificial magnetic charge ice

YL Wang, ZL Xiao, A Snezhko, J Xu, LE Ocola, R Divan… - Science, 2016 - science.org
Artificial ices enable the study of geometrical frustration by design and through direct
observation. However, it has proven difficult to achieve tailored long-range ordering of their …

Field-free superconducting diode in a magnetically nanostructured superconductor

J Jiang, MV Milošević, YL Wang, ZL Xiao… - Physical Review …, 2022 - APS
A strong superconducting diode effect (SDE) is revealed in a thin superconducting film
periodically nanostructured with magnetic dots. The SDE is caused by the current-activated …

Switchable geometric frustration in an artificial-spin-ice–superconductor heterosystem

YL Wang, X Ma, J Xu, ZL Xiao, A Snezhko… - Nature …, 2018 - nature.com
Geometric frustration emerges when local interaction energies in an ordered lattice structure
cannot be simultaneously minimized, resulting in a large number of degenerate states. The …

Frustration and thermalization in an artificial magnetic quasicrystal

D Shi, Z Budrikis, A Stein, SA Morley, PD Olmsted… - Nature Physics, 2018 - nature.com
Artificial frustrated systems offer a playground to study the emergent properties of interacting
systems. Most work to date has been on spatially periodic systems, known as artificial spin …

Frustration by design

I Gilbert, C Nisoli, P Schiffer - Physics today, 2016 - pubs.aip.org
Geometrical frustration is a condition that occurs when a material's lattice geometry
precludes minimizing the energy of all the interactions among pairs of neighbors …

Freezing and thawing of artificial ice by thermal switching of geometric frustration in magnetic flux lattices

J Trastoy, M Malnou, C Ulysse, R Bernard… - Nature …, 2014 - nature.com
The problem of an ensemble of repulsive particles on a potential-energy landscape is
common to many physical systems and has been studied in multiple artificial playgrounds …

Direct visualization of memory effects in artificial spin ice

I Gilbert, GW Chern, B Fore, Y Lao, S Zhang, C Nisoli… - Physical Review B, 2015 - APS
We experimentally demonstrate that arrays of interacting nanoscale ferromagnetic islands,
known as artificial spin ice, develop reproducible microstates upon cycling an applied …

Braiding Majorana fermions and creating quantum logic gates with vortices on a periodic pinning structure

X Ma, CJO Reichhardt, C Reichhardt - Physical Review B, 2020 - APS
We show how vortices that support Majorana fermions when placed on a periodic pinning
array can be used for vortex exchange and independent braiding by performing a series of …