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

Positron-annihilation studies of quasicrystalline-phase Al-Mn-Si-Ru and α-phase alloys

1994 ◽  
Vol 49 (5) ◽  
pp. 3573-3575 ◽  
Author(s):  
I. Kanazawa ◽  
Chi. Nakayama ◽  
J. Takahashi ◽  
T. Ohata ◽  
T. Iwashita ◽  
...  
Keyword(s):  
Positron Annihilation ◽  
Quasicrystalline Phase ◽  
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–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

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.

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