Charge-orbital ordering and Verwey transition in magnetite measured by resonant soft X-ray scattering.
نویسندگان
چکیده
We report experimental evidence for the charge-orbital ordering in magnetite below the Verwey transition temperature T(V). Measurements of O K-edge resonant x-ray scattering on magnetite reveal that the O 2p states in the vicinity of the Fermi level exhibit a charge-orbital ordering along the c axis with a spatial periodicity of the doubled lattice parameter of the undistorted cubic phase. Such a charge-orbital ordering vanishes abruptly above T(V) and exhibits a thermal hysteresis, correlating closely with the Verwey transition in magnetite.
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ورودعنوان ژورنال:
- Physical review letters
دوره 96 9 شماره
صفحات -
تاریخ انتشار 2006