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TU Dresden » Faculty of Mechanical Science and Engineering » Institute for Materials Science » Chair of Materials Science and Nanotechnology



Thursday, 11 March 2004
(at 08:30 in room H1)
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Unusual magnetic transition and its consequences

Alexei Abrikosov

Materials Science Division
Argonne National Laboratory
  USA  






A theory of the phase transition from an insulating antiferromagnet to a metal in layered cuprates is constructed on the basis of a spin-density wave model. The transition occurs to be of the second order at smaller dopings and of the first order at larger ones. The influence of impurity scattering is analyzed. A phenomenon of an infrared transparency threshold is predicted for the insulating phase. For the metallic phase the experimentally observed phenomena of anti-ferromagnetic ``bubbles'' around nonmagnetic impurities and ``week antiferromagnetism'' in the metallic and superconducting phases are explained.



abstract (html)

Within the DPG Frühjahrstagung 2004 (German Physical Society, Spring Meeting 2004)

last modified: 2018.10.24 Mi
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