Geometrical Frustration; XLD; Nanomagnetism; XAS; Multiferroics; Microscopy; XMCD
FarhanAlan (2020), Geometrical Frustration and Planar Triangular Antiferromagnetism in Quasi-Three-Dimensional Artificial Spin Architecture, in Physical Review Letters
, 125, 267203.
Saccone Michael, Hofhuis Kevin, Huang Yen-Lin, Dhuey Scott, Chen Zuhuang, Scholl Andreas, Chopdekar Rajesh V., van Dijken Sebastiaan, Farhan Alan (2019), Dipolar Cairo lattice: Geometrical frustration and short-range correlations, in Physical Review Materials
, 3(10), 104402-104402.
Saccone Michael, Scholl Andreas, Velten Sven, Dhuey Scott, Hofhuis Kevin, Wuth Clemens, Huang Yen-Lin, Chen Zuhuang, Chopdekar Rajesh V., Farhan Alan (2019), Towards artificial Ising spin glasses: Thermal ordering in randomized arrays of Ising-type nanomagnets, in Physical Review B
, 99(22), 224403-224403.
Farhan Alan, Saccone Michael, Petersen Charlotte F., Dhuey Scott, Chopdekar Rajesh V., Huang Yen-Lin, Kent Noah, Chen Zuhuang, Alava Mikko J., Lippert Thomas, Scholl Andreas, van Dijken Sebastiaan (2019), Emergent magnetic monopole dynamics in macroscopically degenerate artificial spin ice, in Science Advances
, 5(2), eaav6380-eaav6380.
Frustrated magnetism occurs in a variety of lattice geometries where interactions between magnetic moments cannot be simultaneously satisfied. The ability to control the level of spin frustration opens up pathways in manipulating system properties such as increasing the magnetic transition temperatures in magneto-electric multiferroics or controlling phase transitions in artificial spin systems. The main goal of this project is to explore emergent phenomena and exotic phases rising in novel types of artificial two-dimensional frustrated systems, where the degree of spin frustration and disorder can be directly tuned at the nanoscale. In addition, we aim to understand the nature of room-temperature magneto-electric switching emerging in oxide superlattices.