Read e-book online Magnetic anisotropies in nanostructured matter PDF

By Peter Weinberger

ISBN-10: 142007265X

ISBN-13: 9781420072655

One of the head promoting Physics Books based on YBP Library Services

Magnetic Anisotropies in Nanostructured subject offers a compact precis of all of the theoretical skill to explain magnetic anisotropies and interlayer trade coupling in nanosystems. The functions contain loose and capped magnetic surfaces, magnetic atoms on steel substrates, nanowires, nanocontacts, and area partitions. a few functions additionally take care of temperature-dependent results and ab initio magnetization dynamics.

The writer clarifies parallel and antiparallel, the excellence among classical spin vectors and spinors, and the particular kind of spin–orbit interactions, earlier than exhibiting how symmetry promises the formal instruments to correctly outline magnetic buildings. After those introductory chapters, the booklet provides easy methods to describe anisotropic actual houses of magnetic nanostructures. It then makes a speciality of magnetic anisotropy energies, trade and Dzyaloshinskii–Moriya interactions, temperature-dependent results, spin dynamics, and similar homes of platforms nanostructured in a single and dimensions. The ebook additionally discusses how tools of describing electrical and magneto-optical houses are utilized to magnetic nanostructured topic. It concludes with an outlook on rising magnetic anisotrophic effects.

Written via a number one researcher with over 35 years of expertise within the box, this publication examines the idea and modeling of magnetic anisotropies in nanostructured fabrics. It indicates how those fabrics are utilized in a number applications.

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In both cases the orientation of the exchange field in the various atomic planes can be grouped in various regimes. Suppose that only a simple parent lattice is present and let L be either the domain wall width or the length of a spin spiral (in atomic monolayers); then: domain wall: {nl , n1 , n2 , n3 , . . , nL , nr } , ½ ¾ . . , {n1 , n2 , n3 , . . , nL = n1 } , . . , spin spiral: {n1 , n2 , n3 , . . , nL = n1 } , . . = {n1 , n2 , n3 , . . 60) . where in the case of domain walls the orientations in two neighboring domains are denoted by nl and nr (l denoting "left" and r "right") and in that of spin spirals the spiral is repeated N times.

J − 1, j} , = − Sκ , Sκ = κ/ |κ| . 66) fQ (z; rn ) = f (zrn )χQ (ˆ can be introduced, f(z; rn ) = ( f1 (z; rn ), f2 (z; rn ), . . ) , ⎞ f1 (z; rn )× ×⎟ ⎜ f(z; rn )× = ⎝ f2 (z; rn ) ⎠ .. 67) that in turn leads to the partial wave representation of G (in the weak rela0 ¡ ¢ tivistic limit, W + mc2 /2mc2 ∼ 1), which because of Eq. 68) n o (z) = GD,nm GD,nm 0 0,QQ0 (z) . 69) The matrix elements GD,nm 0,QQ0 (z) are easily obtained from their non-relativistic counterparts in Eq. 70) L0 = ( 0 , μ0 − s) .

Zabloudil, R. Hammerling, L. Szunyogh and P. Weinberger, Electron Scattering in Solid Matter, Springer Berlin Heidelber New York, 2005. [4] P. Lloyd, Proc. Phys. Soc. London 90, 207 (1967). [5] I. Turek, V. Drchal, J. Kudrnovský, M. Šob and P. Weinberger, Electronic Structure of Disordered Alloys, Surfaces and Interfaces, Kluwer Academic Publishers, 1997. L. Altmann, Rotations, Quaternions and Double Groups (Clarendon Press, Oxford, England 1986). [7] B. Újfalussy, B. Lazarovits, L. Szunyogh, G.

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Magnetic anisotropies in nanostructured matter by Peter Weinberger


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