Bibliographic Details
| Title: |
Field induced magnetic phase transition as a magnon Bose Einstein condensation |
| Authors: |
Radu, Teodora1,2 tradu@phys.ubbcluj.ro, Tokiwa, Yoshifumi1, Coldea, Radu3, Gegenwart, Philipp1, Tylczynski, Z.4, Steglich, Frank1 |
| Source: |
Science & Technology of Advanced Materials. Jul2007, Vol. 8 Issue 5, p406-409. 4p. |
| Subjects: |
Bose-Einstein condensation, Ferromagnetism, Magnons, Antiferromagnetism, Ferromagnetic materials, Magnetism |
| Abstract: |
Abstract: We report specific heat, magnetocaloric effect and magnetization measurements on single crystals of the frustrated quasi-2D spin antiferromagnet in the external magnetic field along -axis and in the temperature range . Decreasing the applied magnetic field B from high fields leads to the closure of the field induced gap in the magnon spectrum at a critical field and a long-range incommensurate state below . In the vicinity of , the phase transition boundary is well described by the power law with the measured critical exponent . These findings provide experimental evidence that the scaling law of the transition temperature can be described by the universality class of 3D Bose–Einstein condensation (BEC) of magnons. [Copyright &y& Elsevier] |
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| Database: |
Engineering Source |
