magnetic monopoles tagged posts

Three dimensional (3D) nanonetwork promise a new era in modern solid state physics with numerous applications in photonics, biomedicine, and spintronics. The realization of 3D magnetic nano-architectures could enable ultra-fast and low-energy data storage devices. Due to competing magnetic interactions in these systems magnetic charges or magnetic monopoles can emerge, which can be utilized as mobile, binary information carriers. Researchers have now designed the first 3D artificial spin ice lattice hosting unbound magnetic charges...

LSU Department of Physics & Astronomy Assistant Professor Ivan Agullo’s new research advances knowledge of a classical theory of electromagnetism. Credit: LSU

Discovery may impact the study of the birth of the universe. Radio waves, microwaves and even light itself are all made of electric and magnetic fields. The classical theory of electromagnetism was completed in the 1860s by James Clerk Maxwell. At the time, Maxwell’s theory was revolutionary, and provided a unified framework to understand electricity, magnetism and optics. Now, new research led by LSU Dept of Physics & Astronomy Assistant Prof. Ivan Agullo, with colleagues from Universidad de Valencia advances knowledge of this theory.

Maxwell’s theory displays a remarkable feature: it remains unaltered under the interchange of the e...

A depiction of the global order of magnetic charge ice. Orange-red areas represent the positive charges; blue areas represent negative charges. Credit: Yong-Lei Wang and Zhili Xiao

A team has created a new material, called “rewritable magnetic charge ice,” that permits an unprecedented degree of control over local magnetic fields and could pave the way for new computing technologies. With potential applications involving data storage, memory and logic devices, magnetic charge ice could someday lead to smaller and more powerful computers or even play a role in quantum computing.

Current magnetic storage and recording devices, such as computer hard disks, contain nanomagnets with 2 polarities, each of which is used to represent either 0 or 1, binary digits...

Physicists at Penn State University have for the 1st time proposed a way to test a little-understood form of quantum mechanics called nonassociative quantum mechanics. So far, all other tests of quantum mechanics have dealt with the associative form. “Nonassociative quantum mechanics has been of mathematical interest for some time (and has recently shown up in certain models of String Theory), but it has been impossible to obtain a physical understanding,” said Martin Bojowald. “We have developed methods which allow us to do just that, and found a first application with a characteristic and instructive result. One of the features that makes this setting interesting is that much of the usual mathematical toolkit of quantum mechanics is inapplicable.”

Standard quantum mechanics is cons...