The Fermi Surfaces of Cu–Pd Alloys Studied by Positron Annihilation

1977 ◽  
Vol 43 (1) ◽  
pp. 89-96 ◽  
Author(s):  
Masayuki Hasegawa ◽  
Toshiharu Suzuki ◽  
Makoto Hirabayashi
Keyword(s):  
Positron Annihilation ◽  
Fermi Surfaces

A study of Fermi surfaces of the α-phase Cu-Ge and Cu-Si alloys by positron annihilation

1974 ◽  
Vol 5 (3) ◽  
pp. 269-274 ◽  
Author(s):  
Toshiharu Suzuki ◽  
Masayuki Hasegawa ◽  
Makoto Hirabayashi
Keyword(s):  
Positron Annihilation ◽  
Fermi Surfaces ◽  
Α Phase

Fermi Surfaces of Copper-Aluminum Alloys by Positron Annihilation

1968 ◽  
Vol 24 (3) ◽  
pp. 467-475 ◽  
Author(s):  
Kunio Fujiwara ◽  
Osamu Sueoka ◽  
Tōru Imura
Keyword(s):  
Aluminum Alloys ◽  
Positron Annihilation ◽  
Fermi Surfaces ◽  
Copper Aluminum

The Fermi surfaces of CuNi alloys by positron annihilation with crossed-slit geometry

1972 ◽  
Vol 38 (7) ◽  
pp. 489-490 ◽  
Author(s):  
S. Nanao ◽  
K. Kuribayashi ◽  
S. Tanigawa ◽  
M. Doyama
Keyword(s):  
Positron Annihilation ◽  
Fermi Surfaces ◽  
Ni Alloys ◽  
Slit Geometry

A SYMMETRY BASED STUDY OF POSITRON ANNIHILATION SPECTRA

1995 ◽  
Vol 09 (28) ◽  
pp. 3667-3687 ◽  
Author(s):  
GH. ADAM ◽  
S. ADAM
Keyword(s):  
Single Crystals ◽  
Positron Annihilation ◽  
Momentum Distribution ◽  
Electron Pair ◽  
Annihilation Radiation ◽  
Two Dimensional ◽  
Fermi Surfaces ◽  
Piecewise Constant ◽  
Positron Spectroscopy ◽  
Line Analysis

We describe a method for off-line analysis of spectra measured by two-dimensional angular correlation of annihilation radiation [Formula: see text] positron spectroscopy. The method takes into account, at all its stages, two salient data features: the piecewise constant discretization of the [Formula: see text] physical momentum distribution into square pixels, performed by the setup, and the occurrence of a characteristic [Formula: see text] projected symmetry of the positron–electron pair momentum distribution. Several validating criteria are derived which secure significantly increased reliability of the output. The method is tested on [Formula: see text] spectra measured on (R)Ba 2 Cu 3 O 7−δ( R123 ; R= Y, Dy) single crystals. It resolves ridge Fermi surfaces [Formula: see text] up to 3rd Umklapp components on both kinds of R123 spectra. Moreover, on a c-axis-projected Y123 spectrum, measured at 300 K, it resolves a small but clear signature of the pillbox [Formula: see text] at the S point of the first Brillouin zone as well.

The Science Enjoyed by Professor Alec T. Stewart

2017 ◽  
Vol 373 ◽  
pp. 3-8
Author(s):  
Toshio Hyodo
Keyword(s):  
Positron Annihilation ◽  
Angular Correlation ◽  
Formation Energy ◽  
First Generation ◽  
Wave Functions ◽  
Annihilation Radiation ◽  
Many Body ◽  
Fermi Surfaces ◽  
Late Professor ◽  
Many Body Interactions

Late Professor Stewart initiated and shaped the International Conference on Positron Annihilation (ICPA) series. As a first-generation experimental positron-annihilation scientist, he made full use of the angular correlation of annihilation radiation (ACAR) method. He applied this method to study Fermi surfaces of metals, positron wave-functions in crystals, positron-electron and -phonon many-body interactions, and the vacancy formation energy in solids. He also studied with this method positronium in liquids and solids (T. Hyodo, J. Phys. Conf. Series, 618 (2015) 012002). All these studies enjoyed by Professor Stewart will long be remembered by the positron study community.

Fermi surfaces in Nb3Sn through positron annihilation

1988 ◽  
Vol 18 (12) ◽  
pp. 2605-2616 ◽  
Author(s):  
L Hoffmann ◽  
A K Singh ◽  
H Takei ◽  
N Toyota
Keyword(s):  
Positron Annihilation ◽  
Fermi Surfaces
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