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Einstein in an iron crystal

Date:
December 20, 2016
Source:
Forschungszentrum Juelich
Summary:
Angle-resolved photoemission spectroscopy has enabled scientists to directly visualize the formation of shifts in the band structure (band gaps) of a sample of prototypical magnetic material as a response to the change in direction of a magnetic field.
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Angle-resolved photoemission spectroscopy has enabled scientists from Forschungszentrum Jülich and LMU Munich to directly visualize the formation of shifts in the band structure (band gaps) of a sample of prototypical magnetic material as a response to the change in direction of a magnetic field.

Tiny relativistic effects form the basis of the functionalities in modern technology, as exemplified in magnetic hard disks and data storage media. Now for the first time, scientists have directly observed features in an electronic structure that could not be seen previously. Angle-resolved photoemission spectroscopy has enabled scientists from Forschungszentrum Jülich and LMU Munich to directly visualize the formation of shifts in the band structure (band gaps) of a sample of prototypical magnetic material as a response to the change in direction of a magnetic field. These gaps in the energy levels of electrons in the iron sample occur in keeping with Einstein's theory of relativity, as electrons flowing through a crystal sample can "sense" the direction of the magnetic field.


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Journal Reference:

  1. E. Młyńczak, M. Eschbach, S. Borek, J. Minár, J. Braun, I. Aguilera, G. Bihlmayer, S. Döring, M. Gehlmann, P. Gospodarič, S. Suga, L. Plucinski, S. Blügel, H. Ebert, C. M. Schneider. Fermi Surface Manipulation by External Magnetic Field Demonstrated for a Prototypical Ferromagnet. Physical Review X, 2016; 6 (4) DOI: 10.1103/PhysRevX.6.041048

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Forschungszentrum Juelich. "Einstein in an iron crystal." ScienceDaily. ScienceDaily, 20 December 2016. <www.sciencedaily.com/releases/2016/12/161220094451.htm>.
Forschungszentrum Juelich. (2016, December 20). Einstein in an iron crystal. ScienceDaily. Retrieved May 26, 2017 from www.sciencedaily.com/releases/2016/12/161220094451.htm
Forschungszentrum Juelich. "Einstein in an iron crystal." ScienceDaily. www.sciencedaily.com/releases/2016/12/161220094451.htm (accessed May 26, 2017).

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