Magnetism

Fernando Luis, Physics 2, 75 (2009) – Published September 14, 2009

Magnetism Nanophysics Spintronics

A microscopic study of magnetic nanoislands on a surface challenges the widely held view that all atoms in a relaxing nanoparticle flip their spins in unison.

Riccardo Hertel, Physics 2, 73 (2009) – Published September 8, 2009

Optics Magnetism

Magnetic switching is typically a continuous process, where a field pulse rotates a magnet from up to down, but it is now possible to do this faster — and with all-optical methods — by first quenching the magnetization to zero and then repolarizing it in the opposite direction.

Published June 22, 2009

Magnetism Quantum Information

The demonstration of all-optical spin-echo measurements may provide a route toward decoupling spins from noise sources.

Fiona J. Burnell, Shivaji L. Sondhi, Physics 2, 49 (2009) – Published June 15, 2009

Magnetism Semiconductor Physics Mesoscopics

The fractional quantum Hall effect, thought to be special to two dimensions, may also flourish in three, providing a possible explanation for anomalies observed in certain 3D materials in high magnetic fields.

Published June 15, 2009

Magnetism Quantum Mechanics Strongly Correlated Materials

The finding of a new duality theory could contribute to solving problems in quantum magnetism.

Carsten Timm, Physics 2, 35 (2009) – Published May 4, 2009

Magnetism

Transport measurements show evidence of a topologically nontrivial structure—a lattice of skyrmions—in intermetallic MnSi.

Published April 27, 2009

Magnetism Superconductivity

Density-functional calculations provide a comprehensive picture of how magnetic order evolves with doping in two iron pnictide compounds.

Jason R. Petta, Physics 2, 27 (2009) – Published April 6, 2009

Magnetism Semiconductor Physics

A quantum dot refrigerator that cools an electron gas close to 100 mK may allow experimentalists to better probe electron-electron interactions in quantum confined systems.

Published March 16, 2009

Magnetism Nanophysics

An advance in magnetic resonance force microscopy enhances its chemical sensitivity and opens up the possibility of identifying different organic substances at the nanoscale.

José María De Teresa, Physics 2, 13 (2009) – Published February 17, 2009

Magnetism Spintronics

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.

Published February 12, 2009

Magnetism

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.

Published January 28, 2009

Magnetism

Scientists identify the microscopic origin of a record magnetocaloric effect in Mn_1+yFe_1-y(P_1-xGe_x).

Published December 22, 2008

Magnetism

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.

Published December 1, 2008

Magnetism

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

Published October 6, 2008

Magnetism Spintronics

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.

Published September 22, 2008

Magnetism Optics

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

Published September 15, 2008

Magnetism

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.

Mathias Kläui, Physics 1, 17 (2008) – Published September 2, 2008

Magnetism Nanophysics

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.