Robert Bartel, Elias Lettl, Patrick Seiler, Thilo Kopp und German Hammerl
Magnetotransport of functional oxide heterostructures affected by spin‐orbit coupling: a tale of two‐dimensional systems
physica status solidi (b) 259, 2100154 (2022)
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Patrick Seiler, Robert Bartel, Thilo Kopp und German Hammerl
Electronic transport in thin films of BaPbO3: unraveling two-dimensional quantum effects
Physical Review B 100, 165402 (2019)
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Markus Reiner, Thomas Gigl, Rainer Jany, German Hammerl und Christoph Hugenschmidt
Impact of oxygen diffusion on superconductivity in YBa2Cu3O7−δ thin films studied by positron annihilation spectroscopy
Physical Review B 97, 144503 (2018)
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B. Meir, Stefan Gorol, Thilo Kopp und German Hammerl
Observation of two-dimensional superconductivity in bilayers of BaBiO3 and BaPbO3
Physical Review B 96, 100507(R) (2017)
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Markus Reiner, Thomas Gigl, Rainer Jany, German Hammerl und Christoph Hugenschmidt
Detection and imaging of the oxygen deficiency in single crystalline YBa2Cu3O7−δ thin films using a scanning positron beam
Applied Physics Letters 106, 111910 (2015)
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German Hammerl und N. Spaldin
Shedding light on oxide interfaces
Science 332, 922-923 (2011)
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Rainer Jany, Martin Breitschaft, German Hammerl, A. Horsche, Christoph Richter, Stefan Paetel, Jochen Mannhart, N. Stucki, N. Reyren, S. Gariglio, P. Zubko, A. D. Caviglia und Jean-Marc Triscone
Diodes with breakdown voltages enhanced by the metal-insulator transition of LaAlO3/SrTiO3 interfaces
Applied Physics Letters 96, 183504 (2010)
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Martin Breitschaft, Veronika Vera Tinkl, Natalya Pavlenko, Stefan Paetel, Christoph Richter, John R. Kirtley, Y. C. Liao, German Hammerl, Volker Eyert, Thilo Kopp und Jochen Mannhart
Two-dimensional electron liquid state at LaAlO3-SrTiO3 interfaces
Physical Review B 81, 153414 (2010)
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German Hammerl, Stefan Thiel und Jochen Mannhart
Durchstimmbarer, zweidimensionaler Supraleiter
Physik in unserer Zeit 40, 68-69 (2009)
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A. D. Caviglia, S. Gariglio, N. Reyren, D. Jaccard, T. Schneider, M. Gabay, Stefan Thiel, German Hammerl, Jochen Mannhart und Jean-Marc Triscone
Electric field control of the LaAlO3/SrTiO3 interface ground state
Nature 456, 624-627 (2008)
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Jochen Mannhart, German Hammerl und Andreas Schmehl
Elektronische Materialien für die Zukunft
Exzellente Forschung in Bayern 2008, 34-39 (2008)
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C. Cen, Stefan Thiel, German Hammerl, Christof W. Schneider, K. E. Andersen, C. Stephen Hellberg, Jochen Mannhart und J. Levy
Nanoscale control of an interfacial metal–insulator transition at room temperature
Nature Materials 7, 298-302 (2008)
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N. Reyren, Stefan Thiel, A. D. Caviglia, Lena F. Kourkoutis, German Hammerl, Christoph Richter, Christof W. Schneider, Thilo Kopp, A.-S. Ruetschi, D. Jaccard, M. Gabay, David A. Muller, Jean-Marc Triscone und Jochen Mannhart
Superconducting interfaces between insulating oxides
Science 317, 1196-1199 (2007)
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C. C. Tsuei, John R. Kirtley, German Hammerl, Jochen Mannhart, H. Raffy und Z. Z. Li
Doping effect on pairing symmetry in cuprate superconductors
Journal of Physics and Chemistry of Solids 67, 64-67 (2006)
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Christof W. Schneider, Stefan Thiel, German Hammerl, C. Richter und Jochen Mannhart
Microlithography of electron gases formed at interfaces in oxide heterostructures
Applied Physics Letters 89, 122101 (2006)
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C. Dark, M. R. Kilburn, German Hammerl, Christof W. Schneider, Jochen Mannhart und C. R. M. Grovenor
NanoSIMS analysis of Ca doping at a grain boundary in a superconducting YBCO Ca-123/123 bicrystal
Journal of Physics: Conference Series 43, 272-276 (2006)
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V. Scagnoli, U. Staub, A. M. Mulders, M. Janousch, G. I. Meijer, German Hammerl, J. M. Tonnerre und N. Stojic
Role of magnetic and orbital ordering at the metal-insulator transition inNdNiO3
Physical Review B 73, 100409(R) (2006)
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Stefan Thiel, German Hammerl, Andreas Schmehl, Christof W. Schneider und Jochen Mannhart
Tunable quasi-two-dimensional electron gases in oxide heterostructures
Science 313, 1942-1945 (2006)
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D. Seron, D. E. Oates, German Hammerl, Jochen Mannhart, P. J. Hirst, R. G. Humphreys, A. C. Anderson, M. A. Hein und J. Derov
Linear and nonlinear microwave properties of Ca-doped YBa2Cu3O7−δ thin films
Physical Review B 72, 104511 (2005)
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D. Seron, D. E. Oates, A. C. Anderson, German Hammerl, Jochen Mannhart, P. J. Hirst, R. G. Humphreys und M. Hein
Effect of Ca-doping on the nonlinear microwave properties of YBCO thin films
Superconductor Science and Technology 17, S422-S426 (2004)
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Christof W. Schneider, Stefan Hembacher, German Hammerl, Rainer Held, Andreas Schmehl, Alexander Weber, Thilo Kopp und Jochen Mannhart
Electron transport through YBa2Cu3O7−δ grain boundary interfaces between 4.2 and 300 K
Physical Review Letters 92, 257003 (2004)
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Christof W. Schneider, German Hammerl, Gennadij Yu. Logvenov, Thilo Kopp, John R. Kirtley, P. J. Hirschfeld und Jochen Mannhart
Half-h/2e critical current-oscillations in SQUIDs
EPL (Europhysics Letters) 68, 86-92 (2004)
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German Hammerl
Neue Verfahren zur Optimierung von Bandsupraleitern
Dissertation, Universität Augsburg (dissertation.de: Berlin, 2004)
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Augsburg, Univ., Diss., 2004

German Hammerl, Andreas Schmehl, Alexander Weber, Jochen Mannhart und Christof W. Schneider
Optimierung von Bandsupraleitern
in: Supraleitung und Tieftemperaturtechnik: Tagungsband zum 8. Statusseminar, 13. u. 14. Februar 2003 im Kongreßhaus Garmisch-Partenkirchen, (VDI-Technologiezentrum: Düsseldorf, 2004)
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C. C. Tsuei, John R. Kirtley, German Hammerl, Jochen Mannhart, H. Raffy und Z. Z. Li
Robust dx2−y2 pairing symmetry in hole-doped cuprate superconductors
Physical Review Letters 93, 187004 (2004)
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Alexander Weber, German Hammerl, Andreas Schmehl, Christof W. Schneider, Jochen Mannhart, Bernd Schey, Marcus Kuhn, R. Nies, B. Utz und H.-W. Neumueller
Ca-doping induced enhancement of the critical currents of coated conductors grown by ion beam assisted deposition
Applied Physics Letters 82, 772-774 (2003)
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M. G. Blamire, Christof W. Schneider, German Hammerl und Jochen Mannhart
Conduction and magnetoresistance in doped manganite grain boundaries
Applied Physics Letters 82, 2670-2673 (2003)
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German Hammerl, Hartmut Bielefeldt, Stephan Leitenmeier, Andreas Schmehl, A. Weber, Christof W. Schneider und Jochen Mannhart
Improving coated conductors
IEEE Transactions on Applied Superconductivity 13, 2625-2627 (2003)
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Christof W. Schneider, W. K. Neils, Hartmut Bielefeldt, German Hammerl, Andreas Schmehl, H. Raffy, Z. Z. Li, S. Oh, J. N. Eckstein, D. J. Van Harlingen und Jochen Mannhart
Pairing symmetry in Bi2Sr2Ca1Cu2O8+x
EPL - Europhysics Letters 64, 489-495 (2003)
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Stephan Leitenmeier, Hartmut Bielefeldt, German Hammerl, Andreas Schmehl, Christof W. Schneider und Jochen Mannhart
Coated conductors containing grains with big aspect ratios
Annalen der Physik 11, 497-502 (2002)
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Jochen Mannhart, Hans Hilgenkamp, German Hammerl und Christof W. Schneider
Experiments with d-wave superconductors
Physica Scripta T102, 107-110 (2002)
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N.-C. Yeh, C.-T. Chen, C.-C. Fu, P. Seneor, Z. Huang, C. U. Jung, J. Y. Kim, M.-S. Park, H.-J. Kim, S.-I. Lee, K. Yoshida, S. Tajima, German Hammerl und Jochen Mannhart
Investigating the pairing state of cuprate superconductors via quasiparticle tunneling and spin injection
Physica C: Superconductivity 367, 174-180 (2002)
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German Hammerl, Hartmut Bielefeldt, Stephan Leitenmeier, Andreas Schmehl, Christof W. Schneider, A. Weber und Jochen Mannhart
Large grain boundary area superconductors
The European Physical Journal B - Condensed Matter and Complex Systems 27, 299-301 (2002)
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R. G. Mints, Ilya Papiashvili, John R. Kirtley, Hans Hilgenkamp, German Hammerl und Jochen Mannhart
Observation of splintered Josephson vortices at grain boundaries in YBa2Cu3O7−δ
Physical Review Letters 89, 067004 (2002)
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German Hammerl, Alexander Herrnberger, Andreas Schmehl, A. Weber, Klaus Wiedenmann, Christof W. Schneider und Jochen Mannhart
Possible solution of the grain-boundary problem for applications of high-tc superconductors
Applied Physics Letters 81, 3209-3211 (2002)
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W. K. Neils, D. J. Van Harlingen, S. Oh, J. N. Eckstein, German Hammerl, Jochen Mannhart, Andreas Schmehl, Christof W. Schneider und Robert R. Schulz
Probing unconventional superconducting symmetries using Josephson interferometry
Physica C: Superconductivity 368, 261-266 (2002)
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German Hammerl, Hartmut Bielefeldt, Bärbel Götz, Andreas Schmehl, Christof W. Schneider, Robert R. Schulz, Hans Hilgenkamp und Jochen Mannhart
Doping-induced enhancement of grain boundary critical currents
IEEE Transactions on Applied Superconductivity 11, 2830-2837 (2001)
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N.-C. Yeh, C.-T. Chen, German Hammerl, Jochen Mannhart, Andreas Schmehl, Christof W. Schneider, Robert R. Schulz, S. Tajima, K. Yoshida, D. Garrigus und M. Strasik
Evidence of doping-dependent pairing symmetry in cuprate superconductors
Physical Review Letters 87, 087003 (2001)
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Jochen Mannhart, German Hammerl, Hartmut Bielefeldt, Hans Hilgenkamp, Stephan Leitenmeier, Andreas Schmehl, Christof W. Schneider und Robert R. Schulz
Grain boundaries in high-tc superconductors: data, ideas and prospects
in: Proceedings of the 10th IWCC International Workshop on Critical Currents in Superconductors, 2001, Göttingen, Germany, 27-29 (2001)
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Christof W. Schneider, Hartmut Bielefeldt, Bärbel Götz, German Hammerl, Andreas Schmehl, Robert R. Schulz, Hans Hilgenkamp und Jochen Mannhart
Interfaces in high-Tc superconductors: fundamental insights and possible applications
Current Applied Physics 1, 349-353 (2001)
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German Hammerl, Christof W. Schneider, Robert R. Schulz, Bärbel Götz, Andreas Schmehl, Hartmut Bielefeldt, Jochen Mannhart und Hans Hilgenkamp
Optimierung von Hoch-Tc-Korngrenzen mittels Dotieren
in: Supraleitung und Tieftemperaturtechnik 2000: Statusseminar VDI Technologiezentrum, Physikalische Technologien, 14.-15.12.2000, Garmisch Partenkirchen, 383-386 (VDI-Technologiezentrum: Düsseldorf, 2001)
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N.-C. Yeh, C.-T. Chen, German Hammerl, Jochen Mannhart, S. Tajima, K. Yoshida, Andreas Schmehl, Christof W. Schneider und Robert R. Schulz
Spatial homogeneity and doping dependence of quasiparticle tunneling spectra in cuprate superconductors
Physica C: Superconductivity and its Applications 364-365, 450-457 (2001)
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Hans Hilgenkamp, Bärbel Götz, Robert R. Schulz, Christof W. Schneider, Boris Chesca, German Hammerl, Andreas Schmehl, Hartmut Bielefeldt und Jochen Mannhart
Understanding and adjusting grain boundary transport properties in high-tc superconductors
in: International Workshop on Superconductivity, Shimane, Japan, 2000, (2001)
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German Hammerl, Andreas Schmehl, Robert R. Schulz, Bärbel Götz, Hartmut Bielefeldt, Christof W. Schneider, Hans Hilgenkamp und Jochen Mannhart
Enhanced supercurrent density in polycrystalline YBa2Cu3O7-δ at 77 K from calcium doping of grain boundaries
Nature 407, 162-164 (2000)
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