Related Experiment Video
Updated: Aug 1, 2026

08:51
Non-invasive 3D-Visualization with Sub-micron Resolution Using Synchrotron-X-ray-tomography
Published on: May 27, 2008
First observation of nonreciprocal X-Ray gyrotropy
Goulon1, Rogalev, Goulon-Ginet
1European Synchrotron Radiation Facility (ESRF), Boite Postale 220, 38043 Grenoble Cedex, France.
Physical Review Letters
|November 4, 2000
Summary
Researchers observed nonreciprocal X-ray linear dichroism in a Cr-doped V2O3 Mott crystal. This new spectroscopy method complements existing techniques for studying antiferromagnetic materials.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Spectroscopy
Background:
- Antiferromagnetic materials lack a net magnetization, making them difficult to study with traditional magnetic spectroscopies like X-ray Magnetic Circular Dichroism (XMCD).
- Understanding the magnetic properties of Mott insulators is crucial for developing novel electronic and spintronic devices.
Purpose of the Study:
- To report the first observation of nonreciprocal X-ray Linear Dichroism (XLD).
- To investigate the potential of this new spectroscopic technique for probing antiferromagnetic materials.
Main Methods:
- Utilizing X-ray Linear Dichroism (XLD) spectroscopy.
- Employing magnetoelectric annealing to grow a single antiferromagnetic domain in a Cr-doped V2O3 Mott crystal along the hexagonal c-axis.
Main Results:
- Observed nonreciprocal X-ray linear dichroism, linked to the real part of the complex gyrotropy tensor.
- The observed effect was dominated by electric dipole-electric quadrupole (E1E2) interference terms.
- A nonreciprocal transverse anisotropy was detected in the low-temperature insulating phase of the material.
Conclusions:
- Nonreciprocal X-ray linear dichroism provides a novel, element-specific spectroscopic tool for antiferromagnetic materials.
- This technique complements XMCD, which is ineffective for antiferromagnets.
- The findings open new avenues for exploring complex magnetic phenomena in condensed matter systems.
More Related Videos
Related Concept Videos
X-ray Crystallography
The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
Gyroscope
A gyroscope is defined as a spinning disk in which the axis of rotation is free to assume any orientation. When spinning, the orientation of the spin axis is unaffected by the orientation of the body that encloses it. The body or vehicle enclosing the gyroscope can be moved from place to place, while the orientation of the spin axis remains the same. This makes gyroscopes very useful in navigation, especially where magnetic compasses cannot be used, such as in crewed and crewless spacecraft,...
Gyroscope: Precession
Precession can be demonstrated effectively through a spinning top. If a spinning top is placed on a flat surface near the surface of the Earth at a vertical angle and is not spinning, it will fall over due to the force of gravity producing a torque acting on its center of mass. However, if the top is spinning on its axis, it precesses about the vertical direction, rather than topple over due to this torque. Precessional motion is a combination of a steady circular motion of the axis and the...
X-ray Diffraction of Biological Samples
X-ray diffraction or XRD is an analytical tool that utilizes X-rays to study ordered structures such as crystalline organic and inorganic samples, polycrystalline materials, proteins, carbohydrates, and drugs.
According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are scattered by the electron clouds around the sample atoms. The X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal crystal...
According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are scattered by the electron clouds around the sample atoms. The X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal crystal...
X-ray Imaging
German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with X-rays, and by 1900, X-ray was widely...
Determination of Crystal Structures
In the late 1800s, the revelation that light extended beyond visible wavelengths led to the discovery of X-rays by Wilhelm Roentgen. Recognized as high-energy electromagnetic radiation with short wavelengths, X-rays prompted exploration into their interaction with crystals. Max von Laue proposed in 1912 that the periodic arrangement of atoms, ions, or molecules in crystals would cause them to diffract X-rays, a hypothesis confirmed through experiments with copper sulfate and zinc sulfide...

