Derivation of the spin Hamiltonians for Fe in MgO

A method to calculate the effective spin Hamiltonian for a transition metal impurity in a non-magnetic insulating host is presented and applied to the paradigmatic case of Fe in MgO. In the first step we calculate the electronic structure employing standard density functional theory (DFT), based on generalized gradient approximation (GGA), using plane waves as a basis set. The corresponding basis of atomic-like maximally localized Wannier functions is derived and used to represent the DFT Hamiltonian, resulting in a tight-binding model for the atomic orbitals of the magnetic impurity. The third step is to solve, by exact numerical diagonalization, the N electron problem in the open shell of the magnetic atom, including both effects of spin–orbit and Coulomb repulsion. Finally, the low energy sector of this multi-electron Hamiltonian is mapped into effective spin models that, in addition to the spin matrices S, can also include the orbital angular momentum L when appropriate. We successfully apply the method to Fe in MgO, considering both the undistorted and Jahn–Teller (JT) distorted cases. Implications for the influence of Fe impurities on the performance of magnetic tunnel junctions based on MgO are discussed.

The annual of the British School at Athens.

"Bibliography of the work of students of the school, coming within the scope of the school's work but not published in the school Annual," by J.ff. Baker-Penoyre: no. 17, p.[xxxix]-liv.

Index-catalogue of the library of the Surgeon-General's Office ...

"Collection of incunabula and early medical prints in the library of the Surgeon-general's office, U.S. Army": Ser. 3, v. 10, p. 1415-1436.

Collections towards the history and antiquities of the county of Hereford /

Vols. 3-4 have imprint: London : J. Murray; v. 5-7 have imprint: Hereford : Jakeman & Carver.

Specimens of early English metrical romances, chiefly written during the early part of the fourteenth century : to which is prefixed an historical introduction, intended to illustrate the rise and progress of romantic composition in France and England /

Gives "not only the general outline, but even the smallest incidents of each story" in plain prose, with passages from the originals. cf. v. 1, p. [iii]-iv.

Commentaries on the book of the prophet Jeremiah and the Lamentations.

The commentaries on Lamentations are in v. 5, p. [299]-518. The remainder of the work is devoted to Jeremiah.

Fate of the children of Usnach [manuscript] /

Binding: Contemporary Niger morocco; gold-stamped title on front board; leather clasps; stamped on inside of back board "C. & C. McLeish".

An introduction to entomology: or, Elements of the natural history of insectx: comprising an account of noxious and useful insects, of theri metamorphoses, food, stratagems, habitations, societies, motions, noises, hybernation, instinct, etc., etc.

"Appendix. Chapter XV of Mr. Freeman's life of Mr. Kirby": p. [589]-607. Index tipped in at end.

The Massachusetts justice : being a collection of the laws of the Commonwealth of Massachusetts, relative to the power and duty of justices of the peace. Alphabetically arranged, in two parts. Part I.--The power and duty of the justices of the Court of General Sessions of the peace. Part II.--The power and duty of justices of the peace, in their separate capacity : to which are added, under the proper heads, a variety of forms, grounded on said laws. The whole intended for the use of those who practise in the office of justice, to assist them in their duties thereto belonging : with an appendix, containing short and concise rules for changing pounds, shillings, pence and farthings, into dollars, cents and milles, which a late law has introduced as the money of account : also, rules for computing interest in such money, and sundry useful tables respecting the same : to all which an index is annexed /

Includes index.

The enchanted moccasins and other legends of the American Indians,

Legends originally collected and published by H.R. Schoolcraft in his Algic researches, 1839; and The myth of Hiawatha, 1856; with many changes by the editor.

Common objects of the microscope /

Includes indexes.

The Chatter of the Visible : Montage and Narrative in Weimar Germany /

'The Chatter of the Visible' examines the paradoxical narrative features of the photo montage aesthetics of artists associated with Dada, Constructivism, and the New Objectivity.

The knowledge of the heavens and the earth made easy, or, The first principles of astronomy and geography explain'd by the use of globes and maps : with a solution of the common problems by a plain scale and compasses, as well as by the globe /

With privilege leaf (A₁).

History of the great reformation of the sixteenth century in Germany, Switzerland, &c.,

"In this edition a few sentences, not essential to the integrity of the work, are omitted."

Speeches of the Governors of Massachusetts from 1765-1775 : and the answers of the House of Representatives to the same; with their resolutions and addresses for that period and other public papers relating to the dispute between this country and Great Britain which led to the independence of the United States.

Mode of access: Internet.