Combined experimental and theoretical investigation of the premartensitic transition in Ni2MnGa |
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| Authors: | Opeil C P Mihaila B Schulze R K Mañosa L Planes A Hults W L Fisher R A Riseborough P S Littlewood P B Smith J L Lashley J C |
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| Institution: | Physics Department, Boston College, 140 Commonwealth Avenue, Chestnut Hill, Massachusetts 02467, USA. |
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| Abstract: | Ultraviolet-photoemission (UPS) measurements and supporting specific-heat, thermal-expansion, resistivity, and magnetic-moment measurements are reported for the magnetic shape-memory alloy Ni2MnGa over the temperature range 100T(PM) is due to the Ni d minority-spin electrons. Below T(M) this peak disappears, resulting in an enhanced density of states at energies around 0.8 eV. This enhancement reflects Ni d and Mn d electronic contributions to the majority-spin density of states. |
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