Lifeboat Foundation

Orbital currents are the lesser-known cousins of spin currents. Both involve an alignment of angular momentum. But spin currents are carried by spin-polarized electrons, while orbital currents are carried by electrons in orbitals having the same angular momentum. Like their spin counterparts, orbital currents could be useful for transmitting information in so-called orbitronic devices, but researchers had expected that these currents would not travel well across material interfaces. Now Igor Lyalin and Roland Kawakami from Ohio State University have measured the flow of orbital currents across selected materials placed in multilayer structures. They find, surprisingly, that the transport of orbital currents is as good or better than the transport of spin currents for most of the sampled materials.

Orbital currents can be generated via the so-called orbital Hall effect—a surface magnetization effect that was predicted 20 years ago but directly detected only in 2023 (see Synopsis: Detection of the Orbital Hall Effect). Interest in orbital currents is growing, as they could be more effective than spin currents at switching the orientation of magnetic layers in data-storage devices.

To study orbital current transport, Lyalin and Kawakami fabricated structures consisting of chromium and nickel layers, separated by a thin spacer. For the spacer material, they tested nonmagnetic metals, ferromagnetic metals, and antiferromagnetic insulators. The researchers generated an orbital current by applying a voltage to the chromium layer, and they measured how much of this current flowed through the structures by observing a magnetization change in the nickel. They found that 12 of the 15 spacer materials transported orbital currents more efficiently than spin currents—a result that could be good news for developing future orbitronic devices, Kawakami says.

This tsunami, triggered by a melting glacier in Greenland, is a sign of things to come.

“We’re at the beginning of a new industrial revolution”

- Jensen Huang, NVIDIA

CNBC’s Megan Cassella briefly caught up with Nvidia CEO Jensen Huang outside the White House. Here are the details.

Continue reading “Nvidia CEO Jensen Huang: We are at the beginning of a new industrial revolution” »

A report states that due to abysmal yields of its 2nm GAA process, Samsung has little choice but to withdraw personnel from its Taylor plant.

There may be some truth to the myth of Merlin.

On Tuesday, archeologists in Scotland revealed evidence of the legendary wizard’s death in Drumelzier between the 6th and 7th centuries — and the findings could change the way we tell Merlin’s tale.

Merlin was said to have been a loyal advisor to King Arthur amid the Dark Ages before being imprisoned, killed and buried along the river Tweed, according to Vita Merlini Sylvestris (the Life of Merlin of the Forest), a medieval manuscript of his life which is currently held at the British Library.

An Open-Source Library for Gaussian Splatting discuss:

Gsplat is an open-source library designed for training and developing Gaussian Splatting methods.

Join the discussion on this paper page.

Besides the clear environmental benefits of this technology, it could cut lithium production costs by up to 40%.first appeared on The Cool Down.

Dr. Sam Parnia talks about reviving people adter they died. Very informative. Fast forward a little to listen to it.

Curve Fitting Methods v/@XKCD

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This means you’re free to copy and share these comics (but not to sell them). More details.