Positron studies of the Fermi surfaces of some transition metals and alloys.
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Positron studies of the Fermi surfaces of some transition metals and alloys.

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Published by University of East Anglia in Norwich .
Written in English


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Thesis (Ph.D.), University of East Anglia, School of Mathematics and Physics, 1987.

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Open LibraryOL13848454M

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  Singru R.M. () Positron studies of fermi surfaces in metals. In: Yussouff M. (eds) Electronic Band Structure and Its Applications. Lecture Notes in Physics, vol Author: R. M. Singru. Abstract. In these lectures we shall outline the use of the positron (e +) annihilation technique for the study of electrons (e-) in metals and, in particular, in non-dilute disordered behavior of slow e +-s in condensed matter has been the subject of intense experimental and theoretical investigations during the last two decades, and the field has been reviewed thoroughly; 1 Cited by: 9. The 2D-ACAR experiments have already been applied with success to the study of the electron-positron momentum distribution of elemental, binary alloys and more complex metallic compounds (like the high Tc superconductors) to obtain information on the topology of their Fermi surface (FS)1. Within the limits of the perturbation. Being able to map out the shapes of Fermi surfaces in disordered alloys and at higher temperatures [37][38][39], positron annihilation [40] (including spin-resolved positron annihilation [41]) and.

The study of bronzes (alloys of copper and tin) dates back thousands of years. Metals are characterized by high electrical and thermal conductivity and by electrical resistivity (the inverse of conductivity) increasing with temperature. Typically, metals at high temperature obey the . The de Haas-van Alphen effect is used to study the Fermi surface of BCC lithium. and band properties in some 3d, 4d and 5d transition metals, in the alkali metal Li and in Ce. CuPd Alloys. Positron studies of fermi surfaces in metals. R. M. Singru. Electron momentum density in metals. G. P. Das. Pages Experimental study of defect states in metals and alloys. R. W. Siegel. Pages Magnetism and chemical order in metallic alloys momentum densities in metals and alloys; photoemission; quasi-particles and. Electronic properties of metals and alloys as they relate to magnetic manifestations; experimental studies of band structures, generalized susceptibilities and Fermi surfaces of transition metals and alloys; valence and phase changes in metals and alloys; Kondo effect in transition metal alloys. 7.

Fermi-surface properties of alpha-phase alloys of copper with zinc Article (PDF Available) in Physical Review B 23(6) March with 56 Reads How we measure 'reads'.   The transition metal elements of the fifth group and sixth group such as Nb, V, Mo, Cr, W and their alloys have been extensively studied in the past years with the 2D-ACAR experiment,,. Nevertheless, a quantitative mapping of their Fermi surface was limited to the so-called N pockets: an ellipsoidal unoccupied region centred at the N points.   Ada Meiallurgica. Vol. pp. Pergamon Press, Primed in Great Britain PHASE STABILITY AND THE FERMI SURFACE OF ALLOYS M. MORINAGA Department of Materials Science and Engineering, The Technological Institute, Northwestern University, Evanston, IL , U.S.A. (Received 4 May ; in revised form 26 January ) Abstracthe Ising formulation was . The state-dependence of the enhancement of the electron-positron momentum density is investigated for some transition and simple metals (Cr, V, Ag and Al). Fermi-surface studies emphasizes.