TY - JOUR
T1 - Towards artificial Ising spin glasses
T2 - Thermal ordering in randomized arrays of Ising-type nanomagnets
AU - Saccone, Michael
AU - Scholl, Andreas
AU - Velten, Sven
AU - Dhuey, Scott
AU - Hofhuis, Kevin
AU - Wuth, Clemens
AU - Huang, Yen-Lin
AU - Chen, Zuhuang
AU - Chopdekar, Rajesh V.
AU - Farhan, Alan
N1 - Publisher Copyright:
© 2019 American Physical Society.
PY - 2019/6/3
Y1 - 2019/6/3
N2 - We explore the thermodynamics in two-dimensional arrays consisting of Ising-type nanomagnets lithographically arranged onto random sites and angular orientations. Introducing these basic spin-glass ingredients, we study the characteristic features of the low-energy states achieved, following thermal-annealing protocols. From direct visualization of real-time dynamics, we record relaxation timescales together with magnetic susceptibility variations over temperature, revealing trends towards short-range order as randomness is increased, but falling short of pure spin-glass behavior. Our work provides a route towards the realization of artificial Ising spin-glass systems.
AB - We explore the thermodynamics in two-dimensional arrays consisting of Ising-type nanomagnets lithographically arranged onto random sites and angular orientations. Introducing these basic spin-glass ingredients, we study the characteristic features of the low-energy states achieved, following thermal-annealing protocols. From direct visualization of real-time dynamics, we record relaxation timescales together with magnetic susceptibility variations over temperature, revealing trends towards short-range order as randomness is increased, but falling short of pure spin-glass behavior. Our work provides a route towards the realization of artificial Ising spin-glass systems.
UR - http://www.scopus.com/inward/record.url?scp=85067211627&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.99.224403
DO - 10.1103/PhysRevB.99.224403
M3 - Article
AN - SCOPUS:85067211627
SN - 2469-9950
VL - 99
SP - 1
EP - 7
JO - Physical Review B
JF - Physical Review B
IS - 22
M1 - 224403
ER -