H. Schober

Publication List Details

Period

1981 - 2009

Number

117

Co-Authors

New Understanding of Ultra-Cold Neutrons Production in Solid Deuterium (2009)

Frei, A., Gutsmiedl, E., Morkel, C., Mueller, A. R., Paul, S., Schober, H., ...

Our recent neutron scattering measurements of phonons and other quasi-particle excitations in solid deuterium (sD$_2$) and the extraction of the density of states for phonons and rotational...

Soft modes and thermal transport in guest-host crystalline structures (2009)

Muratov, A. R., Kats, E. I., Schober, H.

We propose a simple phenomenological model describing vibrational dynamics in a class of materials (like clathrates), which are crystalline compounds with closed cavities in their structures. In the...

Density of states in solid deuterium: Inelastic neutron scattering study (2009)

Frei, A., Gutsmiedl, E., Morkel, C., Müller, A. R., Paul, S., Urban, M., ...

The dynamics of solid deuterium (sD2) is studied by means of inelastic scattering (coherent and incoherent) of thermal and cold neutrons at different temperatures and para-ortho ratios. In this...

Effects of magnetic doping and temperature dependence on phonon dynamics in CaFe\_{1-x}Co\_{x}AsF compounds (x = 0, 0.06, 0.12) (2009)

Mittal, R., Zbiri, M., Rols, S., Su, Y., Xiao, Y., Schober, H., ...

We report detailed measurements of composition as well as temperature dependence of the phonon density-of-states in a new series of FeAs compounds with composition CaFe1\_{1-x}Co\_{x}AsF (x = 0,...

Dynamic Disorder in Negative Thermal Expansion Compound Zn(CN)2 (2009)

Mittal, R., Mitra, S., Schober, H., Chaplot, S. L., Mukhopadhyay, R.

Dynamical disorder in negative thermal expansion compound Zn(CN)2 is investigated by quasielastic neutron scattering technique in the temperature range 170-320 K. Significant quasielastic broadening...

Phonon spectra in CaFe2As2 and Ca0.6Na0.4Fe2As2: Measurement of the pressure and temperature dependence and comparison with ab-initio and shell model calculations (2009)

Mittal, R., Rols, S., Zbiri, M., Su, Y., Schober, H., Chaplot, S. L., ...

We report the pressure and temperature dependence of the phonon density-of-states in superconducting Ca0.6Na0.4Fe2As2 (Tc=21 K) and the parent compound CaFe2As2, using inelastic neutron scattering....

Measurement of anharmonicity of phonons in negative thermal expansion compound Zn(CN)2 by high pressure inelastic neutron scattering (2009)

Mittal, R., Chaplot, S. L ., Schober, H.

Zn(CN)2 is reported to have an isotropic negative thermal expansion (NTE) coefficient (about -51 x 10-6 K-1) over 10-370 K that is twice as large as that of ZrW2O8. Low energy phonon modes play an...

Phonon dynamics in Sr0.6K0.4Fe2As2 and Ca0.6Na0.4Fe2As2 (2008)

Mittal, R., Su, Y., Rols, S., Tegel, M., Chaplot, S. L., Schober, H., ...

We report inelastic neutron scattering measurements of the phonon density-of-states in superconducting Sr0.6K0.4Fe2As2 (Tc=30 K) and Ca0.6Na0.4Fe2As2 (Tc=18 K). Compared with the parent compound...

Phonon Control of Magnetic Relaxation in the Pyrochlore Slab SCGO through Rocking Motion of the Kagome-Plane Triangles (2008)

Zbiri, M., Johnson, M. R., Mutka, H., Payen, C., Schober, H.

We have performed ab-initio lattice dynamics calculations and new inelastic neutron scattering experiments to investigate the recently discovered, phonon-driven, magnetic relaxation in the pyrochlore...

Ab initio lattice dynamics simulations and inelastic neutron scattering spectra for studying phonons in BaFe2As2: Effect of structural phase transition, structural relaxation and magnetic ordering (2008)

Zbiri, M., Schober, H., Johnson, M. R., Rols, S., Mittal, R., Su, Y., ...

We have performed extensive ab initio calculations to investigate phonon dynamics and their possible role in superconductivity in BaFe2As2 and related systems. The calculations are compared to...

Inelastic neutron scattering and lattice dynamical calculations in BaFe2As2 (2008)

Mittal, R., Su, Y., Rols, S., Chatterji, T., Chaplot, S. L., Schober, H., ...

We report here first extensive measurements of the temperature dependence of phonon density of states of BaFe2As2, the parent compound of the newly discovered FeAs-based superconductors, using...

Controlled Exchange of Chromosomal Arms Reveals Principles Driving Telomere Interactions in Yeast (2008)

Schober, H., Kalck, V., Vega-Palas, M.A., Van Houwe, G., Sage, D., Unser, M., ...

The 32 telomeres in the budding yeast genome cluster in three to seven perinuclear foci. Although individual telomeres and telomeric foci are in constant motion, preferential juxtaposition of some...

On the heterogeneous character of water's amorphous polymorphism (2007)

Koza, M. M., May, R. P., Schober, H.

In this letter we report {\it in situ} small--angle neutron scattering results on the high--density (HDA) and low-density amorphous (LDA) ice structures and on intermediate structures as found during...

Formation of channels for fast-ion diffusion in alkali silicate melts: A quasielastic neutron scattering study (2006)

Kargl, Florian, Meyer, A., Koza, M.M., Schober, H.

The mechanism of alkali ion diffusion in sodium, lithium, and potassium disilicate melts is studied by means of quasielastic neutron scattering. Although scattering on alkali atoms comprises coherent...

Soft-mode behavior in superconducting MgB§2-like ternary silicides MAlSi (M=Ca,Sr,Ba). (2006)

Heid, R., Bohnen, K.P., Renker, B., Adelmann, P., Ernst, D., Schober, H.

DPG Spring Meeting of the Divison Condensed Matter, 21st General Conf.of the Condensed Matter Division of the European Physical Society, Dresden, March 26-31, 2006

Channel Formation and Intermediate Range Order in Sodium Silicate Melts and Glasses (2004)

Meyer, A., Horbach, J., Kob, W., Kargl, F., Schober, H.

We use inelastic neutron scattering and molecular dynamics simulation to investigate the interplay between the structure and the fast sodium ion diffusion in various sodium silicates. With increasing...

Phonon spectrum and soft-mode behavior of MgCNi_3 (2003)

Heid, R., Renker, B., Schober, H., Adelmann, P., Ernst, D.

Temperature dependent inelastic neutron-scattering measurements of the generalized phonon density-of-states for superconducting MgCNi_3, T_c=8 K, give evidence for a soft-mode behavior of...

Lattice dynamics and electron-phonon coupling in transition metal diborides (2003)

Heid, R., Renker, B., Schober, H., Adelmann, P., Ernst, D.

The phonon density-of-states of transition metal diborides TMB2 with TM = Ti, V, Ta, Nb and Y has been measured using the technique of inelastic neutron scattering. The experimental data are compared...

LiBC - A prevented superconductor (2003)

Renker, B., Schober, H., Adelmann, P., Schweiss, P., Heid, R.

We have investigated the lattice dynamics of LiBC. Experimental Raman and inelastic neutron scattering results are confronted with density functional calculations. The excellent agreement between...

Excitation spectrum of hydrogen adsorbed to carbon nanotubes (2003)

Renker, B., Schober, H., Schweiss, P., Lebedkin, S., Hennrich, F.

We have studied the microscopic dynamics of hydrogen adsorbed to bundles of single walled carbon nanotubes using inelastic neutron scattering. Evidence is obtained for much higher storage capacities...

Strong renormalization of phonon frequencies in superconducting MgB§2 and related compounds. (2003)

Renker, B., Schober, H., Adelmann, P., Bohnen, K.P., Ernst, D., Heid, R., ...

Proc.of the Internat.Conf.on Physics and Chemistry of Molecular and Oxide Superconductors (MOS 2002), Hsinchu, Taiwan, August 13-18, 2002

Structure, Structural Relaxation and Ion Transport in Sodium Disilicate Melts (2002)

Meyer, A., Schober, H., Dingwell, D. B.

We have investigated Na2SiO5 melts with inelastic neutron scattering at temperatures up to 1600K. The Si-O network relaxes on a time scale of ns, whereas the Na ion relaxation dynamics are found on a...

Calcium Rubidium Nitrate: Mode-Coupling $\beta$ Scaling without Factorization (2001)

Goldammer, M., Losert, C., Wuttke, J., Petry, W., Terki, F., Schober, H., ...

The fast dynamics of viscous calcium rubidium nitrate is investigated by depolarized light scattering, neutron scattering and dielectric loss. Fast $\beta$ relaxation evolves as in calcium potassium...

Hydrogen storage in carbon nanotubes: a neutron scattering investigation. (2001)

Renker, B., Lebedkin, S., Schober, H., Koza, M., Kappes, M.M.

15th Winterschool on Electronic Properties of Novel Materials, Kirchberg, A, March 3-10, 2001

Crystal-like high frequency phonons in the amorphous phases of solid water (2000)

Schober, H., Koza, M. M., Toelle, A., Masciovecchio, C., Sette, F., Fujara, F.

The high frequency dynamics of low- (LDA) and high-density amorphous-ice (HDA) and of cubic ice (I_c) has been measured by inelastic X-ray Scattering (IXS) in the 1-15 nm^{-1} momentum transfer (Q)...

Vibrational States of Glassy and Crystalline Orthotherphenyl (2000)

Toelle, A., Zimmermann, H., Fujara, F., Petry, W., Schmidt, W., Schober, H., ...

Low-frequency vibrations of glassy and crystalline orthoterphenyl are studied by means of neutron scattering. Phonon dispersions are measured along the main axes of a single crystal, and the...

Lattice dynamics of Li-ZrNCl: an electron doped layered superconductor. (2000)

Adelmann, P., Renker, B., Schober, H., Braden, M., Fernandez-Diaz, F.

Internat.Conf.on Physics and Chemistry of Molecular and Oxide Superconductors (MOS 99), Stockholm, S, July 28 - August 2, 1999

Inelastic neutron scattering study of oxygen intercalated C§6§0. (2000)

Renker, B., Schober, H.

Internat.Conf.on Physics and Chemistry of Molecular and Oxide Superconductors (MOS 99), Stockholm, S, July 28 - August 2, 1999

Time-Temperature Superposition of Structural Relaxation in a Viscous Metallic Liquid (1999)

Meyer, A., Busch, R., Schober, H.

Bulk metallic glass-forming Pd40Ni10Cu30P20 has been investigated in its equilibrium liquid by quasielastic neutron scattering. The quasielastic signal exhibits a structural relaxation as known from...

Dynamics of liquid 4He in Vycor (1999)

Glyde, H. R., Plantevin, O., Fak, B., Coddens, G., Danielson, P. S., Schober, H.

We have measured the dynamic structure factor of liquid 4He in Vycor using neutron inelastic scattering. Well-defined phonon-roton (p-r) excitations are observed in the superfluid phase for all wave...

Fast relaxation in a fragile liquid under pressure (1998)

Toelle, A., Schober, H., Wuttke, J., Fujara, F.

The incoherent dynamic structure factor of ortho-terphenyl has been measured by neutron time-of-flight and backscattering technique in the pressure range from 0.1 MPa to 240 MPa for temperatures...

Wavenumber dependence of structural alpha relaxation in a molecular liquid (1998)

Toelle, A., Schober, H., Wuttke, J., Fujara, F.

Structural alpha relaxation in liquid orthoterphenyl is studied by means of coherent neutron time-of-flight and backscattering spectroscopy over a large temperature range. Not only amplitude and...

Fingerprints of solid state chemical reactions in the dynamics of fullerenes. (1998)

Renker, B., Schober, H., Heid, R., Braden, M.

Proc.of the 1997 Internat.Conf.on Neutron Scattering (ICNS '97), Toronto, CDN, August 17-21, 1997

Gitterdynamik von supraleitenden Bornitriden. (1998)

Renker, B., Gompf, F., Schober, H., Schulze, H., Krendelsberger, R.

62.Physikertagung gemeinsam mit der Frühjahrstagung DPG, Regensburg, 23.-27.März 1998

Fingerprints of solid-state chemical reactions in the dynamics of fullerenes. (1998)

Renker, B., Schober, H., Heid, R., Sundqvist, B.

12th Internat.Winterschool on Electronic Properties of Novel Materials, Kirchberg, A, February 28 - March 7, 1998

Pressure and charge induced polymerisation of C§6§0: a comparative study of lattice vibrations. (1997)

Renker, B., Schober, H., Heid, R., Stein, P.von, Gompf, F.

11th Internat.Winterschool on Electronic Properties of Novel Materials, Kirchberg, A, March 1-8, 1997

Dynamics and phase transitions in A§1C§6§0 compounds. (1997)

Schober, H., Renker, B., Heid, R., Tölle, A.

Proc.of the 1st European Conf.on Neutron Scattering (ECNS '96), Interlaken, CH, October 8-11, 1997

Harmonic behavior of metallic glasses up to the metastable melt (1996)

Meyer, A., Wuttke, J., Petry, W., Peker, A., Bormann, R., Coddens, G., ...

In two amorphous alloys ZrTiCuNiBe and ZrAlNiCu coherent neutron scattering has been measured over five decades in energy, including measurements in the metastable melt of a metallic alloy more than...

Niederfrequente Anregungen in A§1C§6§0 Fullerenen (A=Rb,K). (1996)

Schober, H., Renker, B., Gompf, F., Tölle, A.

Frühjahrstagung DPG, Festkörperphysik, Regensburg, 25.-29.März 1996

Lattice dynamics and electron-phonon coupling in superconducting HgBa§2CuO§4 investigated by inelastic neutron scattering. (1996)

Renker, B., Schober, H., Gompf, F.

3rd Internat.Conf.on Physics and Chemistry of Molecular and Oxide Superconductors, Karlsruhe, August 2-8, 1996

Dynamics of RbC§6§0 in the rotator, polymer and dimer phase. (1996)

Schober, H., Renker, B., Heid, R., Gompf, F., Tölle, A.

1st European Conf.on Neutron Scattering, Interlaken, CH, October 8-11, 1996

Localized relaxations in glasses (1995)

Oligschleger, C., Schober, H.

Using molecular dynamics the relaxations in a soft sphere glass and in Se-glass are studied at temperatures up to 30% of the glass temperature. A large number of jumps localized on typically more...

Inelastic neutron scattering study of new mercury based superconductors. (1995)

Renker, B., Schober, H., Adelmann, P., Gompf, F.

Proc.of the 4th Internat.Conf.on Materials and Mechanisms of Superconductivity and High Temperature Superconductors, Grenoble, F, July 4-9, 1994

Comparison of the phonon density of states of superconducting LiTi§1§.§9§2Al§.§0§8O§4 (Tc=10.5 K) with that of nonsuperconducting LiTi§1§.§9§7Cr§.§0§3O§4. (1995)

Gompf, F., Renker, B., Schober, H., Ernst, D.

Proc.of the 4th Internat.Conf.on Materials and Mechanisms of Superconductivity and High Temperature Superconductors, Grenoble, F, July 4-9, 1994

Gitterschwingungen und Elektron Phononkopplung im supraleitenden YNi§2B§2C(T§c=15.6 K) im Vergleich mit nicht supraleitenden LaNi§2B§2C bzw. Y(Ni§7Co§3)§2B§2C. (1995)

Gompf, F., Reichardt, W., Schober, H., Renker, B., Buchgeister, M.

150 Jahre Deutsche Physikalische Gesellschaft : 59.Physikertagung gemeinsam mit der Frühjahrstagung DPG des Arbeitskreises Festkörperphysik, Berlin, 20.-24.März 1995

Neutron scattering study of low-frequency excitations in Rb§3C§6§0 and Rb§6C§6§0. (1995)

Schober, H., Renker, B., Gompf, F., Adelmann, P.

150 Jahre Deutsche Physikalische Gesellschaft : 59.Physikertagung gemeinsam mit der Frühjahrstagung DPG des Arbeitskreises Festkörperphysik, Berlin, 20.-24.März 1995

Intermolecular vibrations in pure and doped C§6§0. An inelastic neutron scattering study. (1994)

Renker, B., Gompf, F., Schober, H., Adelmann, P., Bornemann, H.J., Heid, R.

Internat.Conf.on Phyiscs and Chemistry of Molecular and Oxide Superconductors, Satellite Conf. to LT-20, Eugene, Or., July 27-31, 1993

Inelastic neutron scattering results on pure and doped fullerenes. (1994)

Gompf, F., Renker, B., Schober, H., Adelmann, P., Heid, R.

Internat.Conf.on Physics and Chemistry of Molecular and Oxide Superconductors, Satellite Conf.to LT20, Eugene, Or., July 27-31, 1993

Neutron scattering study of low-frequency excitations in Rb§3C§6§0 and Rb§6C§6§0. (1994)

Schober, H., Renker, B., Gompf, F., Adelmann, P.

4th Internat.Conf.on Materials and Mechanisms of Superconductivity and High Temperature Superconductors, Grenoble, F, July 5-9, 1994

Inelastic neutron scattering study of pure and doped fullerenes. (1993)

Renker, B., Gompf, F., Schober, H., Heid, R.

13th General Conf.of the Condensed Matter Division of the European Physical Society in Conjunction with Arbeitskreis Festkoerperphysik Deutsche Physikalische Gesellschaft, Regensburg, March 29 -...

Neutron scattering study of intermolecular excitations in solid C§6§0 and C§7§0. (1993)

Renker, B., Gompf, F., Heid, R., Adelmann, P., Heiming, A., Reichardt, W., ...

13th General Conf.of the Condensed Matter Division of the European Physical Society in Conjunction with Arbeitskreis Festkoerperphysik Deutsche Physikalische Gesellschaft, Regensburg, March 29 -...

Lattice dynamics of #a-quartz: II. Theory. (1993)

Schober, H., Strauch, D., Nuetzel, K., Dorner, B.

Journal of Physics: Condensed Matter, 5(1993) S.6155-64

COHERENT NEUTRON SCATTERING FROM POLYCRYSTALS (1981)

Buchenau, U., Schober, H., Wagner, R.

Phonon dispersion curves are mostly determined by coherent neutron scattering from single crystals. For a number of materials, however, large enough single crystals are not obtainable. We used the...

MODELS FOR FROZEN-FREE-SPLIT PHENOMENA IN e- -IRRADIATED Al AND Al-Fe (1981)

Schober, H.

Samples of pure Al and Al containing 400 atppm Fe have been irradiated with electrons at 4.2K and annealed at subsepuently higher temperatures. During the annealing program in pure Al, the growth and...

COHERENT NEUTRON SCATTERING FROM POLYCRYSTALS (1981)

Buchenau, U., Schober, H., Wagner, R.

Phonon dispersion curves are mostly determined by coherent neutron scattering from single crystals. For a number of materials, however, large enough single crystals are not obtainable. We used the...

MODELS FOR FROZEN-FREE-SPLIT PHENOMENA IN e- -IRRADIATED Al AND Al-Fe (1981)

Schober, H.

Samples of pure Al and Al containing 400 atppm Fe have been irradiated with electrons at 4.2K and annealed at subsepuently higher temperatures. During the annealing program in pure Al, the growth and...

COHERENT NEUTRON SCATTERING FROM POLYCRYSTALS (1981)

Buchenau, U., Schober, H., Wagner, R.

Phonon dispersion curves are mostly determined by coherent neutron scattering from single crystals. For a number of materials, however, large enough single crystals are not obtainable. We used the...

MODELS FOR FROZEN-FREE-SPLIT PHENOMENA IN e- -IRRADIATED Al AND Al-Fe (1981)

Schober, H.

Samples of pure Al and Al containing 400 atppm Fe have been irradiated with electrons at 4.2K and annealed at subsepuently higher temperatures. During the annealing program in pure Al, the growth and...

Water-coupled low-frequency modes of myoglobin and lysozyme observed by inelastic neutron scattering.

Diehl, M, Doster, W, Petry, W, Schober, H

Conformational changes of proteins often involve the relative motion of rigid structural domains. Normal mode analysis and molecular dynamics simulations of small globular proteins predict...

Water-coupled low-frequency modes of myoglobin and lysozyme observed by inelastic neutron scattering.

Diehl, M, Doster, W, Petry, W, Schober, H

Conformational changes of proteins often involve the relative motion of rigid structural domains. Normal mode analysis and molecular dynamics simulations of small globular proteins predict...