Moulopoulos, K., Cyrot-Lackmann, F.
Scattering of electrons due to fractons can result in a resistivity that {\it decreases} with temperature. Such a behavior also appears in real quasicrystals. If this is then attributed to fracton...
Tight-binding electronic structure of high Tc superconductors (1989)
Julien, J.P., Mayou, D., Cyrot-Lackmann, F.
New superconducting oxides have important crystallographic similarities. They are bulk perovskites or structure derived compounds such as the K 2NiF4 one, with an alternating nature : the oxygen...
High-temperature transformation in AlMn(Si) quasi-crystals (1989)
Berger, C, Cyrot-Lackmann, F, Devenyi, J, Fourcaudot, G, Germi, P, Grieco, J.C, ...
Transformations of the quasi-crystalline icosahedral phases formed in the melt-spun AlMn(Si) alloys Al90Mn10, Al86Mn14 and Al75Mn20Si5 have been studied at high temperatures (300-1000 K) by combined...
Tight-binding electronic structure of high Tc superconductors (1989)
Julien, J.P., Mayou, D., Cyrot-Lackmann, F.
New superconducting oxides have important crystallographic similarities. They are bulk perovskites or structure derived compounds such as the K 2NiF4 one, with an alternating nature : the oxygen...
Tight-binding electronic structure of high Tc superconductors (1989)
Julien, J.P., Mayou, D., Cyrot-Lackmann, F.
New superconducting oxides have important crystallographic similarities. They are bulk perovskites or structure derived compounds such as the K 2NiF4 one, with an alternating nature : the oxygen...
Electronic properties and (meta) stability of rapidly quenched Al-Si alloys (1988)
Chevrier, J, Pavuna, D, Cyrot-Lackmann, F
Two important effects were found in rapidly quenched Al-Si alloys: (i) the enhancement of the electron-phonon coupling parameter, revealed by the variation of Tc and the slope of thermal resistivity;...
Electronic properties and resonant states in Al-Mn(-Si) alloys (1988)
Berger, C, Pavuna, D, Cyrot-Lackmann, F, Cyrot, M
Experimental studies of quasi-crystalline Al100-xMnx(Si) alloys have shown that the magnitude of electrical resistivity as well as the excess specific heat term Δγ are proportional to the...
On electronic properties of Al-Mn(-Si) quasicrystals (1988)
Pavuna, D, Berger, C, Cyrot-Lackmann, F
The authors present structural and resistivity studies of the melt-spun Al-Mn (10-20 at.% Mn) alloys which contain more than 50 vol.% of the quasicrystalline (QC) phase. Using a two-phase Landauer...
Electronic properties and superconductivity of rapidly quenched Al-Si alloys (1987)
Chevrier, J, Pavuna, D, Cyrot-Lackmann, F
The authors present detailed studies of electronic properties of Al-Si alloys prepared in a nonequilibrium state by means of rapid solidification. The quenched alloys exhibit an enhanced...
ON ELECTRONIC PROPERTIES OF Al-Mn QUASICRYSTALS (1986)
Berger, C., Pavuna, D., Cyrot-Lackmann, F.
We present the results on structural and electronic properties of the melt-spun Al-Mn alloys (10 to 18 at% Mn) which contain more than 50 vol% of the quasicrystalline (qX) phase. The analysis of our...
Electronic structure and sign reversal of the Hall coefficient in amorphous CuZr alloys (1986)
Manh, D.N, Pavuna, D, Cyrot-Lackmann, F, Mayou, D, Pasturel, A
The authors present calculated densities of states (DOS) for CuxZr1-x amorphous alloys across the compositional range. They find that for x
ON ELECTRONIC PROPERTIES OF Al//4Mn QUASICRYSTALS IN MELT-SPUN Al-Mn ALLOYS. (1986)
Pavuna, D, Berger, C, Cyrot-Lackmann, F, Germi, P, Pasturel, A
We present the resitivity and structural studies of the melt-spun Al-Mn alloys (with 10-18 at% Mn) that contain more than 50 vol% of the quasicrystalline (qX) Al//4Mn phase. The resistivity varies...
ON ELECTRONIC PROPERTIES OF Al-Mn QUASICRYSTALS (1986)
Berger, C., Pavuna, D., Cyrot-Lackmann, F.
We present the results on structural and electronic properties of the melt-spun Al-Mn alloys (10 to 18 at% Mn) which contain more than 50 vol% of the quasicrystalline (qX) phase. The analysis of our...
ON ELECTRONIC PROPERTIES OF Al-Mn QUASICRYSTALS (1986)
Berger, C., Pavuna, D., Cyrot-Lackmann, F.
We present the results on structural and electronic properties of the melt-spun Al-Mn alloys (10 to 18 at% Mn) which contain more than 50 vol% of the quasicrystalline (qX) phase. The analysis of our...
Nguyen Manh, D., Mayou, D., Pasturel, A., Cyrot-Lackmann, F.
The Cluster Bethe Lattice Method is used for a quantitative study of hybridization effects in transition metal-polyvalent metal alloys. It is shown that the electronic density of states around...
Iterative LCAO treatment with overlap and band occupation in the iron-group metals (1985)
Del Re, G., Kolár, M., Cyrot-Lackmann, F.
A study of the LCAO scheme for the iron-group s- and d-bands is carried out with special emphasis on : (a) the choice of the AO basis and its adjustment to reproduce approaches like the...
Nguyen Manh, D., Mayou, D., Pasturel, A., Cyrot-Lackmann, F.
The Cluster Bethe Lattice Method is used for a quantitative study of hybridization effects in transition metal-polyvalent metal alloys. It is shown that the electronic density of states around...
Iterative LCAO treatment with overlap and band occupation in the iron-group metals (1985)
Del Re, G., Kolár, M., Cyrot-Lackmann, F.
A study of the LCAO scheme for the iron-group s- and d-bands is carried out with special emphasis on : (a) the choice of the AO basis and its adjustment to reproduce approaches like the...
Nguyen Manh, D., Mayou, D., Pasturel, A., Cyrot-Lackmann, F.
The Cluster Bethe Lattice Method is used for a quantitative study of hybridization effects in transition metal-polyvalent metal alloys. It is shown that the electronic density of states around...
Iterative LCAO treatment with overlap and band occupation in the iron-group metals (1985)
Del Re, G., Kolár, M., Cyrot-Lackmann, F.
A study of the LCAO scheme for the iron-group s- and d-bands is carried out with special emphasis on : (a) the choice of the AO basis and its adjustment to reproduce approaches like the...
Boudeville, Y., Rousseau-Violet, J., Cyrot-Lackmann, F., Khanna, S.N.
Calculations of the tight-binding parameters have been worked out for Fe, Co, Ni, Cu, Pd, Pt bonds either in metal-metal bonds or in chemisorptive bonds with oxygen, sulfur, hydrogen, nitrogen, etc....
Boudeville, Y., Rousseau-Violet, J., Cyrot-Lackmann, F., Khanna, S.N.
Calculations of the tight-binding parameters have been worked out for Fe, Co, Ni, Cu, Pd, Pt bonds either in metal-metal bonds or in chemisorptive bonds with oxygen, sulfur, hydrogen, nitrogen, etc....
Boudeville, Y., Rousseau-Violet, J., Cyrot-Lackmann, F., Khanna, S.N.
Calculations of the tight-binding parameters have been worked out for Fe, Co, Ni, Cu, Pd, Pt bonds either in metal-metal bonds or in chemisorptive bonds with oxygen, sulfur, hydrogen, nitrogen, etc....
A SIMPLE MODEL FOR ELASTIC CONSTANTS OF TRANSITIONAL METALLIC GLASSES (1980)
The elastic constants of amorphous transition metals have been explained in a semiquantitative way within a tight binding model for the attractive part of the energy and a Born Mayer type potential...
ELECTRONIC CONTRIBUTION TO THE ENTROPY OF MIXING OF LIQUID TRANSITION METAL BASED ALLOYS (1980)
Khanna, S., Cyrot-Lackmann, F., Hicter, P.
Experimental results on the entropy of mixing of liquid transition metal based alloys FeSi, CoSi and NiSi show that there is an exceptional negative entropy of mixing. We have shown that this effect...
ON THE BULK AND SURFACE ELECTRONIC STRUCTURE OF AMORPHOUS TRANSITION METALS (1980)
Khanna, S., Cyrot-Lackmann, F.
Amorphous metals are characterized by the absence of a long range periodicity as well as the presence of a local disorder. The study of their electronic properties requires an understanding of the...
A SIMPLE MODEL FOR ELASTIC CONSTANTS OF TRANSITIONAL METALLIC GLASSES (1980)
The elastic constants of amorphous transition metals have been explained in a semiquantitative way within a tight binding model for the attractive part of the energy and a Born Mayer type potential...
ELECTRONIC CONTRIBUTION TO THE ENTROPY OF MIXING OF LIQUID TRANSITION METAL BASED ALLOYS (1980)
Khanna, S., Cyrot-Lackmann, F., Hicter, P.
Experimental results on the entropy of mixing of liquid transition metal based alloys FeSi, CoSi and NiSi show that there is an exceptional negative entropy of mixing. We have shown that this effect...
ON THE BULK AND SURFACE ELECTRONIC STRUCTURE OF AMORPHOUS TRANSITION METALS (1980)
Khanna, S., Cyrot-Lackmann, F.
Amorphous metals are characterized by the absence of a long range periodicity as well as the presence of a local disorder. The study of their electronic properties requires an understanding of the...
A SIMPLE MODEL FOR ELASTIC CONSTANTS OF TRANSITIONAL METALLIC GLASSES (1980)
The elastic constants of amorphous transition metals have been explained in a semiquantitative way within a tight binding model for the attractive part of the energy and a Born Mayer type potential...
ELECTRONIC CONTRIBUTION TO THE ENTROPY OF MIXING OF LIQUID TRANSITION METAL BASED ALLOYS (1980)
Khanna, S., Cyrot-Lackmann, F., Hicter, P.
Experimental results on the entropy of mixing of liquid transition metal based alloys FeSi, CoSi and NiSi show that there is an exceptional negative entropy of mixing. We have shown that this effect...
ON THE BULK AND SURFACE ELECTRONIC STRUCTURE OF AMORPHOUS TRANSITION METALS (1980)
Khanna, S., Cyrot-Lackmann, F.
Amorphous metals are characterized by the absence of a long range periodicity as well as the presence of a local disorder. The study of their electronic properties requires an understanding of the...
Structure of liquid transition and rare earth metals (1979)
Khanna, S.N., Cyrot-Lackmann, F.
It is shown that the observed structure factors of transition and rare earth liquid metals can be reasonably simulated by a one component plasma (OCP) model. The simulated OCP model has been used to...
Structure of liquid transition and rare earth metals (1979)
Khanna, S.N., Cyrot-Lackmann, F.
It is shown that the observed structure factors of transition and rare earth liquid metals can be reasonably simulated by a one component plasma (OCP) model. The simulated OCP model has been used to...
Structure of liquid transition and rare earth metals (1979)
Khanna, S.N., Cyrot-Lackmann, F.
It is shown that the observed structure factors of transition and rare earth liquid metals can be reasonably simulated by a one component plasma (OCP) model. The simulated OCP model has been used to...
EFFECT OF SHORT RANGE ORDER ON THE ELECTRONIC STRUCTURE OF DISORDERED TRANSITION ALLOYS (1977)
Cyrot, M., Cyrot-Lackmann, F., DesjonquÈres, M., Gaspard, J.
We present the first a priori calculation of the short range order in transitional alloys. This is based on the calculation of local densities of states as a function of environment. The statistics...
ELECTRONIC STRUCTURE OF SMALL CUBO-OCTAHEDRAL CLUSTERS OF TRANSITION METALS (1977)
Cyrot-Lackmann, F., DesjonquÈres, M., Gordon, M.
The electronic structure of F.C.C. transition metal small cubo-octahedral clusters of increasing size up to 1 289 atoms is described by means of local densities of states (LDS) on various crystal...
EFFECT OF SHORT RANGE ORDER ON THE ELECTRONIC STRUCTURE OF DISORDERED TRANSITION ALLOYS (1977)
Cyrot, M., Cyrot-Lackmann, F., DesjonquÈres, M., Gaspard, J.
We present the first a priori calculation of the short range order in transitional alloys. This is based on the calculation of local densities of states as a function of environment. The statistics...
ELECTRONIC STRUCTURE OF SMALL CUBO-OCTAHEDRAL CLUSTERS OF TRANSITION METALS (1977)
Cyrot-Lackmann, F., DesjonquÈres, M., Gordon, M.
The electronic structure of F.C.C. transition metal small cubo-octahedral clusters of increasing size up to 1 289 atoms is described by means of local densities of states (LDS) on various crystal...
EFFECT OF SHORT RANGE ORDER ON THE ELECTRONIC STRUCTURE OF DISORDERED TRANSITION ALLOYS (1977)
Cyrot, M., Cyrot-Lackmann, F., DesjonquÈres, M., Gaspard, J.
We present the first a priori calculation of the short range order in transitional alloys. This is based on the calculation of local densities of states as a function of environment. The statistics...
ELECTRONIC STRUCTURE OF SMALL CUBO-OCTAHEDRAL CLUSTERS OF TRANSITION METALS (1977)
Cyrot-Lackmann, F., DesjonquÈres, M., Gordon, M.
The electronic structure of F.C.C. transition metal small cubo-octahedral clusters of increasing size up to 1 289 atoms is described by means of local densities of states (LDS) on various crystal...
d Surface states in transition metals (1975)
Desjonquères, M.C., Cyrot-Lackmann, F.
The tight-binding model, including d band degeneracy, is used to calculate the local densities of states on low index surfaces of fcc Ni and bcc Fe. Charge transfer effects are investigated. The...
d Surface states in transition metals (1975)
Desjonquères, M.C., Cyrot-Lackmann, F.
The tight-binding model, including d band degeneracy, is used to calculate the local densities of states on low index surfaces of fcc Ni and bcc Fe. Charge transfer effects are investigated. The...
d Surface states in transition metals (1975)
Desjonquères, M.C., Cyrot-Lackmann, F.
The tight-binding model, including d band degeneracy, is used to calculate the local densities of states on low index surfaces of fcc Ni and bcc Fe. Charge transfer effects are investigated. The...
EXPANSION IN MOMENTS AND DISORDERED SYSTEMS (1974)
Expansion of the density of states in its moments is shown to provide a useful tool in the study of the electronic properties of tightly bound disordered systems. The moments can be directly computed...
EXPANSION IN MOMENTS AND DISORDERED SYSTEMS (1974)
Expansion of the density of states in its moments is shown to provide a useful tool in the study of the electronic properties of tightly bound disordered systems. The moments can be directly computed...
EXPANSION IN MOMENTS AND DISORDERED SYSTEMS (1974)
Expansion of the density of states in its moments is shown to provide a useful tool in the study of the electronic properties of tightly bound disordered systems. The moments can be directly computed...
Gaspard, J., Cyrot-Lackmann, F.
The formalism of the moments and the histogram method are used to describe the electronic density of states of an impurity band for concentrations in the metallic range. By simulating the randomness...
ELECTRONIC STRUCTURE OF DISORDERED SYSTEMS (1972)
The electronic density of states of a disordered system is studied in a tight binding scheme using an expansion in its moments. These moments are directly related to atomic pairs overlap integrals...
Gaspard, J., Cyrot-Lackmann, F.
The formalism of the moments and the histogram method are used to describe the electronic density of states of an impurity band for concentrations in the metallic range. By simulating the randomness...
ELECTRONIC STRUCTURE OF DISORDERED SYSTEMS (1972)
The electronic density of states of a disordered system is studied in a tight binding scheme using an expansion in its moments. These moments are directly related to atomic pairs overlap integrals...
Gaspard, J., Cyrot-Lackmann, F.
The formalism of the moments and the histogram method are used to describe the electronic density of states of an impurity band for concentrations in the metallic range. By simulating the randomness...
ELECTRONIC STRUCTURE OF DISORDERED SYSTEMS (1972)
The electronic density of states of a disordered system is studied in a tight binding scheme using an expansion in its moments. These moments are directly related to atomic pairs overlap integrals...
PARAMAGNÉTISME ORBITAL ET ANISOTROPIE MAGNÉTIQUE DES MÉTAUX DE TRANSITION (1971)
Ducastelle, F., Cyrot-Lackmann, F.
On utilise un développement en moments de la densité d'états pour étudier dans l'approximation des liaisons fortes, le paramagnétisme orbital et son anisotropie, ainsi que l'anisotropie...
PARAMAGNÉTISME ORBITAL ET ANISOTROPIE MAGNÉTIQUE DES MÉTAUX DE TRANSITION (1971)
Ducastelle, F., Cyrot-Lackmann, F.
On utilise un développement en moments de la densité d'états pour étudier dans l'approximation des liaisons fortes, le paramagnétisme orbital et son anisotropie, ainsi que l'anisotropie...
PARAMAGNÉTISME ORBITAL ET ANISOTROPIE MAGNÉTIQUE DES MÉTAUX DE TRANSITION (1971)
Ducastelle, F., Cyrot-Lackmann, F.
On utilise un développement en moments de la densité d'états pour étudier dans l'approximation des liaisons fortes, le paramagnétisme orbital et son anisotropie, ainsi que l'anisotropie...
APPLICATION DE LA MÉTHODE DES MOMENTS AUX SURFACES (1970)
Les moments de la densité d'états du spectre d'électrons traités en liaisons fortes, de phonons ou de magnons, peuvent se calculer par une technique de décompte de chemins sur le réseau...
APPLICATION DE LA MÉTHODE DES MOMENTS AUX SURFACES (1970)
Les moments de la densité d'états du spectre d'électrons traités en liaisons fortes, de phonons ou de magnons, peuvent se calculer par une technique de décompte de chemins sur le réseau...
APPLICATION DE LA MÉTHODE DES MOMENTS AUX SURFACES (1970)
Les moments de la densité d'états du spectre d'électrons traités en liaisons fortes, de phonons ou de magnons, peuvent se calculer par une technique de décompte de chemins sur le réseau...
Nous calculons la contribution d'une bande s étroite aux modules élastiques (1/2) (C11— C12) et (1/3) (C11 + 2C12) d'un réseau cubique simple. Cette contribution est négative. Le résultat...
Nous calculons la contribution d'une bande s étroite aux modules élastiques (1/2) (C11— C12) et (1/3) (C11 + 2C12) d'un réseau cubique simple. Cette contribution est négative. Le résultat...
Nous calculons la contribution d'une bande s étroite aux modules élastiques (1/2) (C11— C12) et (1/3) (C11 + 2C12) d'un réseau cubique simple. Cette contribution est négative. Le résultat...
Structure électronique des métaux de transition liquides (1966)
On calcule dans l'approximation des liaisons fortes la densité d'états d'un métal de transition liquide. Cette densité d'états est donnée par une trace que l'on développe sur un ensemble...
Structure électronique des métaux de transition liquides (1966)
On calcule dans l'approximation des liaisons fortes la densité d'états d'un métal de transition liquide. Cette densité d'états est donnée par une trace que l'on développe sur un ensemble...
Structure électronique des métaux de transition liquides (1966)
On calcule dans l'approximation des liaisons fortes la densité d'états d'un métal de transition liquide. Cette densité d'états est donnée par une trace que l'on développe sur un ensemble...