Browse Physics

Using a double spin-filter tunnel junction consisting of two magnetic insulating layers, researchers have observed a sizeable magnetoresistance without using magnetic electrodes, thus tuning the tunneling via the magnetic state of the insulating layers and by application of an electric voltage.

Researchers report an unusual critical scaling regime in a material that goes from a spin liquid to a spiral magnet upon application of a magnetic field.

Scientists identify the microscopic origin of a record magnetocaloric effect in Mn1+yFe1-y(P1-xGex).

The unusual properties of a single-atom-thick layer of a ferromagnetic alloy deposited on platinum hint at new possibilities for the further miniaturization of recording devices.

An unconventional muon spin rotation experiment can determine if the magnetism in a spin ice is static or dynamic.

From conservation laws to selection rules, symmetry arguments have long been revered for their far-reaching consequences in physics. Now they point to an effective spin-orbit coupling in antiferromagnetic conductors.

Researchers in Japan have identified spin excitations in multiferroics that can be driven by electric fields.

Scientists in Japan have discovered a material with magnetically switchable optical dichroism that is four orders of magnitude larger than what has been seen before.

Most applications based on magnetism are incompatible with domain walls, which interrupt a homogeneous magnetization. Scientists are turning this view around as they discover new ways to use an electric current to manipulate and store information in nanoscale domain walls.

A new porous material changes shape in response to a magnetic field and could be lighter and cheaper than others on the market.

The 2007 Nobel Prize in Physics recognizes the discovery of giant magnetoresistance, which allowed dramatic improvements in memory density for disk drives (revised 23 October).

A theory proposes a new way in which a material could allow magnetic and electric fields to influence one another–a property with great potential for new devices.

In a step toward faster and smaller computer memories, researchers pushed the wall between two magnetic regions at over 100 meters per second, 100 times faster than ever before.

A tank of stirred liquid sodium generates a magnetic field even though it’s highly turbulent–a condition closer to real dynamos in planets, stars, and galaxies, but harder to simulate in the lab.

Two experiments in 1946, showing how electromagnetic waves could flip atomic nuclei, eventually led to magnetic resonance imaging (MRI).

Images of magnetic surfaces grown one atomic layer at a time reveal surprising magnetic patterns.

A new technique measures the velocity of electrons in an electric current.

A magnetic field can sustain a single, isolated hump on the surface of a magnetic fluid–a new type of solitary feature with parallels in heated fluids and shaking beds of sand.

Researchers have reduced the magnetic field needed to induce a “colossal” change in resistance–an effect that might improve data storage devices.

Bombardment by protons can turn ordinary graphite into an unusually simple artificial magnet.