Tous les volumes

Helvetica Physica Acta

Helvetica Physica Acta Volume 56 (1983)
Intitulé Page
Cahier 1-3 I
Table des matières III
Préface: Preface IX
Article: Atomic and molecular hydrogen and deuterium : quantum gases and solids 3
Article: Time of flight experiments with conduction electrons : an application of weak localization 17
Article: Experimental tests of localization in semiconductors 27
Article: Localization and interaction in one dimension 35
Article: Electron localization and superconductivity in 2D metals 37
Article: The metal insulator transition in disordered electron systems 47
Article: Disorder and interaction 55
Article: Qualitative theory of stochastic differential equations and quantum mechanics of disordered systems 61
Article: Theory of the quantized Hall conductance 75
Article: Angle-resolved photoelectron spectroscopy of the nickel magnetism below and above T_C 105
Article: Magnetic correlations in metallic magnetics at finite temperatures 117
Article: Itinerant magnetism in actinide systems 131
Article: Configuration mixing in the groundstate of Ce 147
Article: Superconductivity in CeCu_2Si_2 : dependence of T_C on alloying and stoichiometry 165
Article: Magnetic ordering in superconductors 179
Article: Theory of magnetic superconductors 189
Article: Point-contact spectroscopy 209
Article: Dynamic correlations in the electron gas 223
Article: Jahn-Teller effect in ititnerant electron systems : the Jahn-Teller polaron 237
Article: Bloch electrons in rational and irrational magnetic fields 245
Article: Electrons and phonons in metallic glasses 257
Article: Low temperature properties of metallic glasses 269
Article: Amorphous metals : materials and applications 281
Article: Polymer glasses : defects and plasticity on a molecular scale 293
Article: Statistical topology of glasses 307
Article: Optical experiments on deep centers in semiconductors 317
Article: Defect characterization in III-V compounds by ESR 329
Article: The effect of hydrostatic pressure on shallow and deep impurity states in semiconductors 331
Article: A theorist in industry 349
Article: Applications of superlattices 361
Article: New experiments in femtosecond condensed matter spectroscopy 373
Article: Picosecond pulse generation by distributed feedback dye lasers 383
Article: Applications of picosecond and subpicosecond spectroscopy 393
Article: Theory of surface core-level shifts in metals 405
Article: Surface reconstruction and adsorbate geometry by surface core level spectroscopy 427
Article: Positrons and solid state physics 437
Article: Muons and Muonium in solids 449
Article: High resolution electron microscopy 463
Article: Scanning tunneling microscopy 481
Article: Metal-semiconductor interface formation 483
Article: Electronic properties of interfaces 493
Article: Small aggregates 507
Article: Magnetic properties of metallic clusters 521
Article: Cluster spectroscopy 529
Article: Structural and electronic properties of small metal aggregates 541
Article: Microemulsions and colloids 551
Article: Semiconductor dynamics from first principles : phonons, forces and dielectric properties 559
Article: Stability of acoustic and optical solitons in a diatomic chain 569
Article: A molecular dynamics calculation of the plastic phase of NaCN 575
Article: Molecular dynamics on a parallel computer 583
Article: Monte Carlo methods for quantum lattice models 593
Article: Quasi-two-dimensional excitations in GaAs/Al_xGa_1-xAs semiconductor multiple quantum well structures 607
Article: Conducting polymers : solitons or not? 639
Article: Light-induced dynamics of chlorophyll systems studied by neutron spectroscopy 655
Article: Incommensurate crystal phases 665
Article: Commensurate-incommensurate phase transitions 677
Article: New type of soliton solutions from a Landau potential describing the β-γ-δ-transitions in (C_3H_7NH_3)_2MnCl_4 689
Article: Liquids with cubic orientational order : the cholesteric 695
Article: Multicritical behavior of polymers near an adsorbing wall 697
Article: Structural glasses and Rb_1-x(NH_4)_xH_2PO_4 705
Article: Sol-gel transition 721
Article: Magnetic properties of superconducting or normal networks and random walks on percolating clusters 733
Article: Melting of two-dimensional solids 743
Article: Molecular dynamics simulations of phase transitions in physisorbed nobel gases 755
Article: Search for two-dimensional melting in a lattice of superconducting vortices 765
Article: First direct observation of the quantum mechanical behaviour of a truly macroscopic object 789
Article: Quantum Brownian motion 797
Article: Paths to turbulence 805
Article: Scenarios for the onset of chaos 813
Article: The NMR-laser : a nonlinear solid state system showing chaos 825
Article: Oscillatory and steady convection in a nematic liquid crystal 837
Article: Stability and relative stability in nonlinear driven systems 847
Article: Freezing transition phenomena far from equilibrium 863
Article: Transport properties of highly excited semiconductors 875
Index: Author index 881
Cahier 4 883
Article: In memoriam Wolfgang Pauli (1900-1958) 883
Informations des associations: Rapport de la réunion de printemps 1983 de la Société Suisse de Physique à Fribourg les 24 et 25 mars 889
Cahier 5 993
Article: Heisenberg's applications of quantum mechanics (1926-33) or the settling of the new land 993
Article: Relativistic kinematics and dynamics : a new group theoretical approach 1002
Article: Diagonal QCD_2 with massless quarks : gauge transformations and mass perturbation 1024
Article: A Loewner-type interpolation problem applied to partial-wave dispersion relations 1046
Article: Triton bound state calculation with energy-dependent separable potentials 1053
Article: On averaged angular time delay for two-body scattering 1064
Article: Commensurate-incommensurate transitions in 2 dimensions 1070
Article: Magnetic susceptibility of (para-Br-C_6H_4NH_3)_2FeCl_4 and (meta-Cl-C_6H_4NH_3)_2FeCl_2Br_2 1088
Article: Strain coefficient of resistivity in thin metallic films 1093
Cahier 6 1099
Article: Leonhard Euler 1707-1783 : Schlaglichter auf sein Leben und Werk 1099
Article: A 'pointwise' kinetic energy estimate and applications to Schrödinger theory 1132
Article: On some K-representations of the Poincaré and Einstein groups 1140
Article: On finite volume corrections to the equation of state of a free Bose gas 1151
Article: On Callan's proof of the BPHZ theorem 1158
Article: Comments on the anharmonic oscillator model 1168
Article: Complete sets of unbounded observables 1175
Article: Simple proof that the structure preserving maps between quantum mechanical propositional systems conserve the angles 1187
Article: Excitation non résonante de spins nucléaires aux basses fréquences 1191
Table des matières 1207
Index: Author's index = Autorenregister = Table des auteurs 1213