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  1. Article

    Open Access

    Role of defects in determining the magnetic ground state of ytterbium titanate

    Pyrochlore systems are ideally suited to the exploration of geometrical frustration in three dimensions, and their rich phenomenology encompasses topological order and fractional excitations. Classical spin ic...

    D. F. Bowman, E. Cemal, T. Lehner, A. R. Wildes, L. Mangin-Thro… in Nature Communications (2019)

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  2. Article

    Open Access

    In situ strain tuning of the metal-insulator-transition of Ca2RuO4 in angle-resolved photoemission experiments

    Pressure plays a key role in the study of quantum materials. Its application in angle resolved photoemission (ARPES) studies, however, has so far been limited. Here, we report the evolution of the k-space electro...

    S. Riccò, M. Kim, A. Tamai, S. McKeown Walker, F. Y. Bruno… in Nature Communications (2018)

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  3. No Access

    Article

    In Situ Neutron Diffraction Analyzing Stress-Induced Phase Transformation and Martensite Elasticity in [001]-Oriented Co49Ni21Ga30 Shape Memory Alloy Single Crystals

    Recent studies demonstrated excellent pseudoelastic behavior and cyclic stability under compressive loads in [001]-oriented Co–Ni–Ga high-temperature shape memory alloys (HT-SMAs). A narrow stress hysteresis w...

    A. Reul, C. Lauhoff, P. Krooß, M. J. Gutmann… in Shape Memory and Superelasticity (2018)

  4. Article

    Open Access

    Diffusion mechanism in the sodium-ion battery material sodium cobaltate

    High performance batteries based on the movement of Li ions in Li x CoO2 have made possible a revolution in mobile electronic technology, from laptops to mobile phones. However, ...

    T. J. Willis, D. G. Porter, D. J. Voneshen, S. Uthayakumar, F. Demmel… in Scientific Reports (2018)

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  5. Article

    Cyclic Degradation of Co49Ni21Ga30 High-Temperature Shape Memory Alloy: On the Roles of Dislocation Activity and Chemical Order

    Conventional shape memory alloys (SMAs), such as binary Ni–Ti, are typically limited to service temperatures below 100 °C. Recent studies on Co–Ni–Ga high-temperature SMAs revealed the potential that these all...

    P. Krooß, P. M. Kadletz, C. Somsen, M. J. Gutmann… in Shape Memory and Superelasticity (2016)

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  6. Article

    Functional Fatigue and Tension–Compression Asymmetry in [001]-Oriented Co49Ni21Ga30 High-Temperature Shape Memory Alloy Single Crystals

    Conventional shape memory alloys cannot be employed for applications in the elevated temperature regime due to rapid functional degradation. Co–Ni–Ga has shown the potential to be used up to temperatures of ab...

    P. Krooß, T. Niendorf, P. M. Kadletz, C. Somsen… in Shape Memory and Superelasticity (2015)

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  7. No Access

    Article

    Vacancy defects and monopole dynamics in oxygen-deficient pyrochlores

    The idea of magnetic monopoles in spin ice has enjoyed much success at intermediate temperatures, but at low temperatures a description in terms of monopole dynamics alone is insufficient. Recently, numerical ...

    G. Sala, M. J. Gutmann, D. Prabhakaran, D. Pomaranski, C. Mitchelitis… in Nature Materials (2014)

  8. No Access

    Article

    Suppression of thermal conductivity by rattling modes in thermoelectric sodium cobaltate

    Sodium cobaltate has latterly received attention due to its appealing thermoelectric properties. By combining inelastic X-ray and neutron scattering results with detailed first-principles calculations, it is n...

    D. J. Voneshen, K. Refson, E. Borissenko, M. Krisch, A. Bosak… in Nature Materials (2013)

  9. No Access

    Article

    Diffuse scattering and the mechanism for the phase transition in triglycine sulphate

    Despite the order/disorder nature of its ferroelectric phase transition, and evidence for the evolution of local order as being important for understanding the transition, no comprehensive diffuse scattering s...

    J. M. Hudspeth, D. J. Goossens, T. R. Welberry… in Journal of Materials Science (2013)

  10. No Access

    Article

    Patterning of sodium ions and the control of electrons in sodium cobaltate

    The remarkable electronic and thermal properties of sodium cobaltate have made it a focus of much attention: it becomes superconducting when water molecules are interleaved between the cobalt oxide sheets, it ...

    M. Roger, D. J. P. Morris, D. A. Tennant, M. J. Gutmann, J. P. Goff… in Nature (2007)

  11. No Access

    Article

    Bericht über fünfjährige Behandlungsergebnisse bei 98 Lungentuberkulösen mit intrakutanen (subepidermalen) Injektionen mit Alttuberkulin Koch

    M. J. Gutmann in Beiträge zur Klinik der Tuberkulose und spezifischen Tuberkulose-Forschung (1928)

  12. No Access

    Article

    Der mikroskopische Nachweis der gefärbten Tuberkelbazillen im Hell-Dunkelfeld

    M. J. Gutmann in Beiträge zur Klinik der Tuberkulose und spezifischen Tuberkulose-Forschung (1927)