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  1. No Access

    Article

    Transport studies at the Mott transition of the two-dimensional organic metal κ-(BEDT-TTF)2Cu[N(CN)2]Br x Cl1- x

    The two-dimensional organic conductor κ-(BEDT-TTF)2Cu[N(CN)2]Br x Cl1- x undergoes a transition from an insulator to ...

    S. Yasin, M. Dumm, B. Salameh, P. Batail, C. Meźière… in The European Physical Journal B (2011)

  2. Article

    Open Access

    Early amino-acid administration improves preterm infant weight

    Premature infants, especially those born less than 1500 g, often exhibit slow overall growth after birth and lack of early nutritional support may be an important element. We tested the hypothesis that early a...

    C J Valentine, S Fernandez, L K Rogers, P Gulati, J Hayes… in Journal of Perinatology (2009)

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  3. No Access

    Article

    Charge-transfer processes in radical ion molecular conductors κ-(BEDT-TTF)2Cu[N(CN)2]Br x Cl1 − x : The superconductor (x = 0.9) and the conductor with the metal-insulator transition (x = 0)

    Optical spectral investigations of low-dimensional organic molecular conductors κ-(BEDT-TTF)2Cu[N(CN)2]Br x Cl1 − x with x = 0.9 (the superconductor with...

    R. M. Vlasova, N. V. Drichko, B. V. Petrov, V. N. Semkin… in Physics of the Solid State (2009)

  4. No Access

    Article

    Terahertz spectroscopy of AuFe spin glasses

    The electrodynamic response of spin glasses (in the form of thin AuFe films) in the terahertz frequency range has been studied using backward-wave oscillator (BWO) spectroscopy (10–40 cm−1) and optical ellipsomet...

    A. S. Prokhorov, V. B. Anzin… in Journal of Experimental and Theoretical Ph… (2006)

  5. Article

    Retraction Note: Evidence for spin–charge separation in quasi-one-dimensional organic conductors

    Nature 418, 614–617 (2002) In this Letter, we described the anomalous behaviour of the thermal conductivity k in quasi-one-dimensional Bechgaard salts. As we have since observed a conventional temperature depe...

    T. Lorenz, M. Hofmann, M. Grüninger, A. Freimuth, G. S. Uhrig, M. Dumm… in Nature (2006)

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  6. No Access

    Article

    Charge order in (TMTTF)2PF6 investigated by infrared spectroscopy

    We investigated the vibronic modes of the (TMTTF)2PF6 charge transfer salt in the vicinity of the charge-order transition by temperature dependent infrared measurements on single crystals. In the mid-infrared fre...

    M. Dumm, M. Abaker, M. Dressel, L. K. Montgomery in Journal of Low Temperature Physics (2006)

  7. No Access

    Article

    Charge Order in (TMTTF)2PF6 Investigated by Infrared Spectroscopy

    We investigated the vibronic modes of the (TMTTF) 2 PF 6 charge transfer salt in the vicinity o...

    M. Dumm, M. Abaker, M. Dressel, L. K. Montgomery in Journal of Low Temperature Physics (2006)

  8. No Access

    Article

    Kondo scattering and properties of TmSe in the infrared region

    The conductivity and permittivity spectra of the intermediate-valence semiconductor TmSe have been measured by terahertz and infrared spectroscopy in a frequency range of 10–104 cm−1 and a temperature range of 5–...

    B. P. Gorshunov, A. S. Prokhorov… in Journal of Experimental and Theoretical Ph… (2005)

  9. No Access

    Article

    Evidence for spin–charge separation in quasi-one-dimensional organic conductors

    Interacting conduction electrons are usually described within Fermi-liquid theory1, which states that, in spite of strong interactions, the low-energy excitations are electron-like quasiparticles with charge and ...

    T. Lorenz, M. Hofmann, M. Grüninger, A. Freimuth, G. S. Uhrig, M. Dumm… in Nature (2002)

  10. No Access

    Article

    Ultrafast generation of magnetic fields in a Schottky diode

    For the development of future magnetic data storage technologies, the ultrafast generation of local magnetic fields is essential. Subnanosecond excitation of the magnetic state has so far been achieved by laun...

    Y. Acremann, M. Buess, C. H. Back, M. Dumm, G. Bayreuther, D. Pescia in Nature (2001)

  11. No Access

    Chapter

    Epitaxy and Magnetism of Fe and FeCo on Gaas(001):

    Fe was epitaxially grown on an atomically flat GaAs(001) surface with a (2×6) or a (4 ×2) surface reconstruction. This films are ferromagnetic at room temperature with 100% remanence along the ea...

    M. Dumm, F. Bensch, R. Moosbühler, M. Zölfl… in Magnetic Storage Systems Beyond 2000 (2001)

  12. No Access

    Article

    Magnetic susceptibility, heat capacity, and optical conductivity of LiPc and LiPcI

    The magnetic susceptibility, using dc and electron spin resonance (ESR) methods, the specific heat, and the infrared properties of the one-dimensional molecular semiconductors lithium phthalocyanine (LiPc) and...

    M. Dumm, M. Dressel, M. Nicklas… in The European Physical Journal B - Condense… (1998)