Research Activities

Selected Publications

• K.W. Kehr and Z. Koza:
  Hopping motion of lattice gases through nonsymmetric potentials unter strong bias conditions,
  Phys.Rev.E. 61, 72319-2326 (2000)

• M. Kawasaki, T. Odagaki, and K.W. Kehr:
  Absence of self-averaging in the complex admittance for transport through random media,
  Phys.Rev.B. 61, 5839-5842 (2000)

• H. Ambaye and K.W. Kehr:
  Toy Model for Molecular Motors,
  Physica A 267, 111 (1999)

• H.M. Krenzlin, J. Budczies, and K.W. Kehr:
  Wave packet tunneling,
  Ann.Phys. (Leipzig) 7, 732 (1998)

• K.W. Kehr, K. Mussawisade, and T. Wichmann:
  Diffusion of Particles on Lattices, in Diffusion in Condensed Matter ,
  J. Kärger, P. Heitjans, and R. Haberlandt, eds., (Vieweg, Braunschweig, 1998), p.265

• K.W. Kehr, K.P.N. Murthy, and H. Ambaye:
  Connection between dispersive transport and statistics of extreme events,
  Physica A 253, 9 (1998)

• K.W. Kehr, K. Mussawisade, T. Wichmann, and W. Dieterich:
  Rectification by hopping motion through nonsymmetric potentials with strong bias, Phys.Rev.E (Rapid Communications),
  Phys.Rev.E 56, R2351 (1997)

• K.Mussawisade, T. Wichmann, and K.W. Kehr:
  Combination of random-barrier and random-trap models,
  J.Phys.Cond.Matter 9, 1181 (1997)

• H.M. Krenzlin, J. Budczies, and K.W. Kehr:
  Larmor clock for tunneling times,
  Phys.Rev.A 53, 3749 (1996)

• T. Wichmann and K.W. Kehr:
  Effective-medium theory of collective diffusion of lattice gases in lattices with site-energy disorder,
  J.Phys.-Cond.-Matter 7, 717 (1995)

• R. Kutner, K.W. Kehr, W. Renz, and R. Przenioslo:
  Diffusion in a one-dimensional bosonic lattice gas,
  submitted to J.Phys.A: Math & Gen. 28, 923 (1995)

• P. Borgs, K.W. Kehr, and P. Heitjans:
  Spin-lattice relaxation in simple stochastic models for disordered systems,
  Phys.Rev.B 52, 6668 (1995)

• T. Wichmann, K.G. Wang, and K.W. Kehr:
  Collective diffusion in the absence of a single-particle diffusion coefficient,
  J.Phys.A 27 L263 (1994)

• A. Jakobs and K.W. Kehr:
  Theory and simulation of multiple--trapping transport through a finite slab,
  Phys.Rev.B 48 8780 (1993)

• P. Argyrakis and K.W. Kehr:
  Mean number of distinct sites visited by correlated walks. II. Disordered lattices,
  J.Chem.Phys. 97 2718 (1992)

• R. Risch and K.W. Kehr:
  Stochastic theory of muon spin relaxation in a model for trans-polyacetylene,
  Phys.Rev.B 46 5246 (1992)

• K.W. Kehr and K.P.N. Murthy:
  Distribution of mean first-passage times in random chains due to disorder,
  Phys.Rev.A 41, 5728 (1990)

• K.P.N. Murthy and K.W. Kehr:
  Mean first-passage time of random walks on a random lattice,
  Phys.Rev.A 40, 2082 (1989); Erratum Phys.Rev.A 41, 1160 (1990)

• K.W. Kehr, K. Binder, and S.M. Reulein:
  Mobility, interdiffusion, and tracer diffusion in lattice-gas models of two-component alloys,
  Phys.Rev.B 39, 4891 (1989)

• J.W. Haus and K.W. Kehr:
  Diffusion in regular and disordered lattices,
  Phys. Repts. 150, 263 (1987)

• K.W. Kehr and K. Kitahara:
  Spin depolarization of particles in tunneling states,
  J. Phys. Soc. Jpn.(Letters) 56, 889 (1987)

• R. Czech and K.W. Kehr:
  Depolarization of rotating spins by random walks on lattices,
  Phys.Rev. B 34, 261 (1986)

• K.W. Kehr and P. Argyrakis:
  Mean number of distinct sites visited by correlated walks. I. Perfect lattices.
  J. Chem. Phys. 84, 5816 (1986)

• R. Czech and K.W. Kehr:
  Spin depolarization for one-dimensional random walk,
  Phys. Rev. Lett. 53, 1783 (1984)

• H. van Beijeren, K.W. Kehr, and R. Kutner:
  Diffusion in concentrated lattice gases. III. Tracer diffusion on a one-dimensional lattice,
  Phys. Rev. B 28, 5711 (1983)

• J. Jaeckle and K.W. Kehr:
  Calculation of the diffusion constant of muons in metals at low temperatures,
  J. Phys. F 13, 753 (1983)

• K.W. Kehr, D. Richter, J.M. Welter, O. Hartmann, E. Karlsson, L.O. Norlin, T.O. Niinikoski, and A. Yaouanc:
  Muon diffusion and trapping in aluminum and dilute aluminum alloys: Experiments and comparison with small-polaron theory,
  Phys. Rev. B 26, 567 (1982)

• J.W. Haus, K.W. Kehr, and J.W. Lyklema:
  Diffusion in a disordered medium,
  Phys. Rev. B (Brief Reports) 25, 2905 (1982)

• K.W. Kehr and R. Kutner:
  Random walk on a random walk,
  Physica 110A, 535 (1982)

• K.W. Kehr, R. Kutner, and K. Binder:
  Diffusion in concentrated lattice gases. Self-difffusion of noninteracting particles in three- dimensional lattices,
  Phys. Rev. B 23, 4931 (1981)

• W. Zwerger and K.W. Kehr:
  On the frequency dependence of the conductivity in random walk models with internal states,
  Z. Physik B 40, 157 (1980)

• K.W. Kehr, G. Honig, and D. Richter:
  Stochastic theory of spin depolarization of muons diffusing in the presence of traps,
  Z. Physik B 32, 49 (1978)

• K.W. Kehr and J.W. Haus:
  On the equivalence between multistate- trapping and continuous-time random walk models,
  Physica 93A, 412 (1978)

• M. Borghini, T.O. Niinikoski, J.C. Soulie, O. Hartmann, E. Karlsson, L.O. Norlin, K. Pernestal, K.W. Kehr, D. Richter, and E. Walker:
  Muon diffusion in niobium in the presence of traps,
  Phys. Rev. Lett. 40, 1723 (1978)

• K.W. Kehr and D. Richter:
  Incoherent scattering law for diffusion in crystals with random impurities,
  Solid State Commun. 20, 477 (1976)

• J. Jaeckle and K.W. Kehr:
  High-frequency ultrasonic attenuation in superfluid helium under pressure,
  Phys. Rev. Lett. 27, 654 (1971)

• K. Kehr:
  On the low-temperature behavior of Bose liquids,
  Z.Physik 221, 291 (1969)

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