THEORY OF EXCITONS IN ZINCBLENDE-STRUCTURE SEMI-CONDUCTORS IN INTERMEDIATE MAGNETIC FIELDS.EKARDT W.1977; PHYS. STATUS SOLIDI, B; ALLEM.; DA. 1977; VOL. 84; NO 1; PP. 293-304; ABS. ALLEM.; BIBL. 32 REF.Article

GROUND STATE ENERGY AND WAVE FUNCTION OF THE EXCITON IN ARBITRARY HOMOGENIC MAGNETIC FIELDS.EKARDT W.1975; SOLID STATE COMMUNIC.; G.B.; DA. 1975; VOL. 16; NO 2; PP. 233-237; BIBL. 22 REF.Article

ADDITIONAL LONG- AND SHORT-RANGE POTENTIALS FOR DIRECT EXCITONS IN ZINCBLENDE STRUCTURE SOLIDS. II. NUMERICAL RESULTS AND COMPARISON WITH EXPERIMENT.EKARDT W.1975; PHYS. STATUS SOLIDI, B; ALLEM.; DA. 1975; VOL. 68; NO 2; PP. 491-496; ABS. ALLEM.; BIBL. 15 REF.Article

ELECTRONIC CONTRIBUTION TO THE DYNAMICAL SCREENING IN THE THEORY OF EXCITONS IN III-V AND II-VI SEMICONDUCTORS WITH ZINCBLENDE STRUCTURE.EKARDT W.1974; PHYS. STATUS SOLIDI, B; ALLEM.; DA. 1974; VOL. 65; NO 1; PP. 381-395; ABS. ALLEM.; BIBL. 24 REF.Article

RETARDED COUPLING CONSTANTS OF FAST ELECTRONS TO SURFACE POLARITONS OF THIN FILMS = CONSTANTES DE COUPLAGE RETARDE D'ELECTRONS RAPIDES AVEC LES POLARITONS DE SURFACE DE COUCHES MINCESEKARDT W.1981; PHYS. REV. B; ISSN 0163-1829; USA; DA. 1981; VOL. 23; NO 8; PP. 3723-3726; BIBL. 20 REF.Article

Theory of photoemission from small metal particles = Théorie de la photoémission de petites particules métalliquesEKARDT, W.Solid state communications. 1985, Vol 54, Num 1, pp 83-86, issn 0038-1098Article

STRUCTURE OF THE L_II/III-ABSORPTION-EDGE SINGULARITY OF NA METAL = STRUCTURE DE LA SINGULARITE DE LIMITE D'ABSORPTION L_II/III DU SODIUM METALLIQUEHANSCH W; EKARDT W.1982; PHYSICAL REVIEW. B: CONDENSED MATTER; ISSN 0163-1829; USA; DA. 1982; VOL. 25; NO 12; PP. 7815-7817; BIBL. 15 REF.Article

LO-PHONON-ASSISTED TWO-PHOTON ABSORPTION OF THE FIRST EXCITED STATE OF THE BIEXCITON IN CUCL.EKARDT W; SHEBOUL MI.1977; PHYS. STATUS SOLIDI, B; ALLEM.; DA. 1977; VOL. 80; NO 1; PP. 51-56; ABS. ALLEM.; BIBL. 14 REF.Article

THE INFLUENCE OF SCREENING EFFECTS ON THE AUGER RECOMBINATION IN SEMICONDUCTORS.HAUG A; EKARDT W.1975; SOLID STATE COMMUNIC.; G.B.; DA. 1975; VOL. 17; NO 3; PP. 267-268; BIBL. 12 REF.Article

Size effects in the electronic properties of hydrogen and helium embedded in small metal clusters: the self-consistent spherical-jellium-particle model = Effets dimensionnels dans les propriétés électroniques de l'hydrogène et de l'hélium immergés dans des petits amas métalliques: le modèle de particule de jellium sphérique autocohérentEKARDT, W.Physical review. B, Condensed matter. 1988, Vol 37, Num 17, pp 9993-10002, issn 0163-1829Article

Size-dependent photoabsorption and photoemission of small metal particles = Photoabsorption et photoémission fonction de la dimension de petites particules métalliquesEKARDT, W.Physical review. B, Condensed matter. 1985, Vol 31, Num 10, pp 6360-6370, issn 0163-1829Article

Work function of small metal particles: self-consistent spherical jellium-background model = Travail de sortie de petites particules métalliques: modèle du fond de jellium sphérique autocohérentEKARDT, W.Physical review. B, Condensed matter. 1984, Vol 29, Num 4, pp 1558-1564, issn 0163-1829Article

Wave-vector dispersion versus angular-momentum dispersion of collective modes in small metal particles = Dispersion du vecteur d'onde en fonction de la dispersion du moment angulaire des modes collectifs dans les petites particules métalliquesEKARDT, W.Physical review. B, Condensed matter. 1987, Vol 36, Num 8, pp 4483-4486, issn 0163-1829Article

Collective multipole excitations in small metal particles: critical angular momentum l^cr for the existence of collective surface modes = Excitations multiples collectives dans les petites particules métalliques: Moment angulaire critique l_cr pour l'existence de modes de surface collectifsEKARDT, W.Physical review. B, Condensed matter. 1985, Vol 32, Num 4, pp 1961-1970, issn 0163-1829Article

Dynamical polarizability of small metal particles: self-consistent spherical jellium background model = Polarisabilité dynamique de petites particules métalliques: modèle d'état fondamental de jellium sphérique auto-cohérentEKARDT, W.Physical review letters. 1984, Vol 52, Num 21, pp 1925-1928, issn 0031-9007Article

MANY EXCITON EFFECTS IN THE BIEXCITON BOUND-STATE POTENTIALEKARDT W; SHEBOUL MI.1979; J. LUMINESC.; NLD; DA. 1979; VOL. 20; NO 2; PP. 179-183; BIBL. 9 REF.Article

PHONON-ASSISTED TWO-PHOTON ABSORPTION OF THE EXCITONIC MOLECULE IN CUCL. I: BARE-EXCITON APPROACHEKARDT W; BROCKSCH HJ.1979; PHYS. STATUS SOLIDI, B; DDR; DA. 1979; VOL. 93; NO 1; PP. 203-211; ABS. GER; BIBL. 12 REF.Article

Anomalous inelastic electron scattering from small metal particles = Diffusion électronique inélastique anormale de petites particules métalliquesEKARDT, W.Physical review. B, Condensed matter. 1986, Vol 33, Num 12, pp 8803-8805, issn 0163-1829, 2Article

Theory of electronic excitations in coated metal particles: jellium-on-jellium model = Théorie des excitations électroniques dans les particules métalliques revêtues: modèle de jellium sur jelliumEKARDT, W.Physical review. B, Condensed matter. 1986, Vol 34, Num 2, pp 526-533, issn 0163-1829Article

Dynamical image potential of a slowly moving electron: effects of spatial dispersion and boundary conditions at the image planeEKARDT, W.Physical review. B, Condensed matter. 1983, Vol 28, Num 2, pp 1099-1102, issn 0163-1829Article

EXTENDED THEORY OF THE X-RAY-EDGE SINGULARITYHAENSCH W; EKARDT W.1981; PHYS. REV. B; ISSN 0163-1829; USA; DA. 1981; VOL. 24; NO 10; PP. 5497-5512; BIBL. 45 REF.Article

LIFE-TIME EFFECTS AND AMPLITUDE REDUCTION IN THE THEORY OF THE EXTENDED X-RAY ABSORPTION FINE-STRUCTUREEKARDT W; THOAI DBT.1981; SOLID STATE COMMUN.; ISSN 0038-1098; USA; DA. 1981; VOL. 40; NO 10; PP. 939-942; BIBL. 15 REF.Article

INFLUENCE OF THE ELECTRON-HOLE EXCHANGE INTERACTION ON THE BIEXCITON GROUND STATE IN CDS.EKARDT W; SHEBOUL MI.1976; PHYS. STATUS SOLIDI, B; ALLEM.; DA. 1976; VOL. 76; NO 2; PP. K89-K91; BIBL. 6 REF.Article

ON THE FIRST EXCITED STATE OF THE BIEXCITON IN CUCL.EKARDT W; SHEBOUL MI.1976; PHYS. STATUS SOLIDI, B; ALLEM.; DA. 1976; VOL. 74; NO 2; PP. 523-529; ABS. ALLEM.; BIBL. 9 REF.Article

INELASTIC SCATTERING OF SLOW ELECTRONS BY MOLECULES ADSORBED ON A SMALL METAL SPHEREEKARDT W; TRAN THOAI DB.1982; SURF. SCI.; ISSN 0039-6028; NLD; DA. 1982; VOL. 120; NO 1; PP. 38-46; BIBL. 21 REF.Article