By C Y Fong
This quantity offers an in depth therapy of half-metallic fabrics and their homes from either an experimental and theoretical perspective. It discusses the tools used to appreciate and expect the homes of half-metals and the gamut of alternative fabrics amenable to those concepts. It additionally bargains an expansive bibliography to facilitate extra and deeper learn. This e-book presents the appropriate definitions of all key terminology utilized in the colossal and sundry literature.
this is often the 1st entire monograph at the topic and may function a kick off point for graduate scholars and senior researchers who desire to input the sector. This booklet can also be a useful connection with these already operating within the zone of half-metallic fabrics.
Readership: Graduate scholars and researchers operating within the box of half-metallic fabrics.
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Extra info for Half-Metallic Materials and Their Properties
H is the strength of a magnetic ﬁeld pointing into the paper (shown as a cross). VH is the Hall voltage. February 15, 2013 9:40 Half-metallic Materials and Their Properties Methods of Studying Half-metals 9inx6in b1479-ch02 39 Fig. 24. , 2004). are commonly measured. Husmann and Singh (2006) measured ∆ρxx /ρxx as an alternative. The anomalous Hall coeﬃcient RAH is then extracted with the information from either longitudinal resistivity ratio ∆ρxx /ρxx as a function of H (Fig. 24(a)) or transverse resistivity ρxy as a function of H (Fig.
Then, it follows a region of having a negative slope. The angle θ at which the slope changes from zero to negative can be used to determine February 15, 2013 9:40 Half-metallic Materials and Their Properties Methods of Studying Half-metals 9inx6in b1479-ch02 23 Fig. 6. , 1993). The Yoneda peaks are marked by arrows. the density of the substrate. The slope is aﬀected by the roughness of the substrate, the interface roughness and thickness of the ﬁlm causing the reduction of intensity. The modulations (wavy form) are due to interference of reﬂections between the surface of the sample and the interface of the sample and substrate.
What is measured The tunneling current, from the reading of the ammeter, is the crucial quantity to be measured. To contrast characteristics relevant to processes of the NM-SC tunneling and HM-SC tunneling, the corresponding tunneling currents as a function of voltage are shown in Fig. 34. Note that in Fig. 34(a), the current is zero only when the bias voltage is zero. However, there is a range of 2∆ of the voltage for the tunneling current to be zero in Fig. 34(b). February 15, 2013 52 9:40 Half-metallic Materials and Their Properties 9inx6in b1479-ch02 Half-metallic Materials and Their Properties A phenomenological approach to the tunneling of spin-polarized electrons has been given by Blonder, Tinkham and Klapwijk (1982).
Half-Metallic Materials and Their Properties by C Y Fong