Dr. Alexander Schwarz

Scientific Staff, group member since 1993
Subgroup: Force Microscopy

Contact:

Phone: +49 (0)40 42838 - 6139(off); 2640(lab 016); 2034(lab 015); 2309(lab 003); 5570(lab 003); 4614(lab 005); 6301(lab U04)
Fax:       +49 (0)40 42838 - 5311
Email:       schwarz @ physnet.uni-hamburg.de

Postal Address:
Institute of Applied Physics and Interdisciplinary Nanoscience Center Hamburg
Jungiusstr. 9A, Room:  113(off); 016(lab); 015(lab); 003(lab); 005(lab); U04(lab)
D-20355 Hamburg
Germany

Publications:

Combined feedback and sympathetic cooling of a mechanical oscillator coupled to ultracold atoms
P. Christoph, T. Wagner, H. Zhong, R. Wiesendanger, K. Sengstock, A. Schwarz, and C. Becker,
New Journ. Phys. 30 093020 (2018)
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Probing the Nano-Skyrmion Lattice on Fe/Ir(111) with Magnetic Exchange Force Microscopy
J. Grenz, A. Köhler, A. Schwarz, and R. Wiesendanger,
Phys. Rev. Lett. 119 047205 (2017)
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A millikelvin all-fiber cavity optomechanical apparatus for merging with ultra-cold atoms in a hybrid quantum system
H. Zhong, G. Fläschner, A. Schwarz, R. Wiesendanger, P. Christoph, T. Wagner, A. Bick, C. Staarmann, B. Abeln, K. Sengstock, and C. Becker,
Rev. Sci. Instr. 88 023115 (2017)
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Characterizing tips suitable for atomic force microscopy and spectroscopy with atomic resolution and spin sensitivity
R. Schmidt, A. Schwarz, and R. Wiesendanger,
Appl. Phys. Lett. 110 061601 (2017)
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Temperature and non-linear response of cantilever-type mechanical oscillators used in atomic force microscopes with interferometric detection
G. Fläschner, K. Ruschmeier, A. Schwarz, R. Bakhtiari, M. Thorwart, and R. Wiesendanger,
Appl. Phys. Lett. 106 123102 (2015)
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Detecting the dipole moment of a single carbon monoxide molecule
A. Schwarz, A. Köhler, J. Grenz, and R. Wiesendanger,
Appl. Phys. Lett. 105 011606 (2014)
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Using Metallic Noncontact Atomic Force Microscope Tips for Imaging Insulators and Polar Molecules: Tip Characterization and Imaging Mechanisms
D. Z. Gao, J. Grenz, M. B. Watkins, F. F. Canova, A. Schwarz, R. Wiesendanger, and A. L. Shluger,
ACS Nano 8 5339 (2014)
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Miniaturized high-precision piezo driven two axes stepper goniometer
H. Zhong, A. Schwarz, and R. Wiesendanger,
Rev. Sci. Instr. 85 045006 (2014)
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Determining Adsorption Geometry, Bonding, and Translational Pathways of a Metal−Organic Complex on an Oxide Surface: Co-Salen on NiO(001)
A. Schwarz, D. Z. Gao, K. Lämmle, J. Grenz, M. B. Watkins, A. L. Shluger, and R. Wiesendanger,
J. Phys. Chem. C 117 1105 (2013)
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Magnetization switching utilizing the magnetic exchange interaction
R. Schmidt, A. Schwarz, and R. Wiesendanger,
Phys. Rev. B 86 174402 (2012)
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Atomic-scale magnetic dissipation from spin-dependent adhesion hysteresis
E. Y. Vedmedenko, Q. Zhu, U. Kaiser, A. Schwarz, and R. Wiesendanger,
Phys. Rev. B 85 174410 (2012)
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Quantitative Measurement of the Magnetic Exchange Interaction across a Vacuum Gap
R. Schmidt, C. Lazo, U. Kaiser, A. Schwarz, S. Heinze, and R. Wiesendanger,
Phys. Rev. Lett. 106 257202 (2011)
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Chemical Resolution at Ionic Crystal Surfaces Using Dynamic Atomic Force Microscopy with Metallic Tips
G. Teobaldi, K. Lämmle, T. Trevethan, M. Watkins, A. Schwarz, R. Wiesendanger, and A. Shluger,
Phys. Rev. Lett. 106 216102 (2011)
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Unambiguous Determination of the Adsorption Geometry of a Metal−Organic Complex on a Bulk Insulator
K. Lämmle, T. Trevethan, A. Schwarz, M. Watkins, A. Shluger, and R. Wiesendanger,
Nano Letters (2010)
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Miniaturized transportable evaporator for molecule deposition inside cryogenic scanning probe microscopes
K. Lämmle, A. Schwarz, and R. Wiesendanger,
Rev. Sci. Instr. 81 053902 (2010)
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Three-electrode self-actuating self-sensing quartz cantilever: design, analysis, and experimental verification
C. J. Chen, A. Schwarz, R. Wiesendanger, O. Horn, and J. Müller,
Rev. Sci. Instr. 81 053702 (2010)
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Real space visualization of thermal fluctuations in a triangular flux line lattice
A. Schwarz, M. Liebmann, U. H. Pi, and R. Wiesendanger,
New J. Phys. 12 033022 (2010)
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The monomer-to-dimer transition and bimodal growth of Co-Salen on NaCl(001): a high resolution atomic force microscopy study
S. Fremy, A. Schwarz, K. Lämmle, M. Prosenc, and R. Wiesendanger,
Nanotechnology 20 405608 (2009)
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Hydrogen-related contrast in atomic force microscopy
R. Schmidt, A. Schwarz, and R. Wiesendanger,
Nanotechnology 20 264007 (2009)
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Towards an understanding of the atomic scale magnetic contrast formation in NC-AFM: a tip material dependent MExFM study on Ni
A. Schwarz, U. Kaiser, and R. Wiesendanger,
Nanotechnology 20 264017 (2009)
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Probing the Magnetic Exchange Forces of Iron on the Atomic Scale
R. Schmidt, C. Lazo, H. Hölscher, U. H. Pi, V. Caciuc, A. Schwarz, R. Wiesendanger, and S. Heinze,
Nano Letters 9 200 (2009)
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Evaluating local properties of magnetic tips utilizing an antiferromagnetic surface
U. Kaiser, A. Schwarz, and R. Wiesendanger,
Phys. Rev. B 78 104418 (2008)
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Magnetic exchange force microscopy with atomic resolution
U. Kaiser, A. Schwarz, and R. Wiesendanger,
Nature 446 522 (2007)
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MExFM - A New Force Microscopy Based Technique to Study Atomic Scale Magnetism
A. Schwarz,
Conference Proceedings EAST 2007 1 32 (2007)
 (not online available)
Visualizing the flux distribution of superconductors in external magnetic fields by magnetic force microscopy
U. H. Pi, Z. G. Khim, D. H. Kim, A. Schwarz, M. Liebmann, and R. Wiesendanger,
Phys. Rev. B 73 144505 (2006)
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Observation of the flux-antiflux boundary propagation during magnetization reversal in Bi2Sr2CaCu2O8+δ crystal with single vortex resolution
A. Schwarz, M. Liebmann, R. Wiesendanger, U. H. Pi, Z. G. Khim, and D. H. Kim,
Appl. Phys. Lett. 88 012507 (2006)
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Magnetization reversal of a structurally disordered manganite thin film with perpendicular anisotropy
M. Liebmann, A. Schwarz, U. Kaiser, R. Wiesendanger, D.-W. Kim, and T. W. Noh,
Phys. Rev. B 71 104431 (2005)
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Interpretation of the atomic scale contrast obtained on graphite and single-walled carbon nanotubes in the dynamic mode of atomic force microscopy
M. Ashino, A. Schwarz, H. Hölscher, U.D. Schwarz, and R. Wiesendanger,
Nanotechnology 16 134 (2005)
 (not online available)
Dynamic force spectroscopy across an individual strongly pinned Vortex in a Bi2Sr2CaCu2O8+δ single crystal.
U. H. Pi, Z. G. Khim, D. H. Kim, A. Schwarz, M. Liebmann, and R. Wiesendanger,
Appl. Phys. Lett. 85 5307 (2004)
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Atomic-resolution dynamic force microscopy and spectroscopy of a single walled carbon nanotube: characterization of interatomic van der Waals forces.
M. Ashino, A. Schwarz, T. Behnke, and R. Wiesendanger,
Phys. Rev. Lett. 93 136101 (2004)
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Direct observation of the vortices trapped in stacking fault dislocations of Bi2Sr2CaCu2O8 by a low-temperature magnetic force microscope.
U. H. Pi, Z. G. Khim, D. H. Kim, A. Schwarz, M. Liebmann, and R. Wiesendanger,
Phys. Rev. B 69 94518 (2004)
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Visualization of the Barkhausen Effect by Magnetic Force Microscopy.
A. Schwarz, M. Liebmann, U. Kaiser, R. Wiesendanger, T. W. Noh, and D. W. Kim,
Phys. Rev. Lett. 92 77206 (2004)
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Tilted magnetization of a La0.7Sr0.3MnO3/LaAlO3 (001) thin film
M. Liebmann, U. Kaiser, A. Schwarz, R. Wiesendanger, U. H. Pi, T. W. Noh, Z. G. Khim, and D. W. Kim,
J. Magn. Magn. Mater. 280 51 (2004)
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Three-dimensional force field spectroscopy.
A. Schwarz, H. Hölscher, S. M. Langkat, and R. Wiesendanger,
Proc. STM´03 Conference, Eindhoven, NL (eds. P. M. Koenraad and M. Kemerink), AIP Conf. Proc. 696 68 (2003)
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Vortex dynamics in Bi2Sr2CaCu2O8 single crystals with low density columnar defects studied by magnetic force microscopy.
U. H. Pi, D. H. Kim, Z. G. Khim, U. Kaiser, M. Liebmann, A. Schwarz, and R. Wiesendanger,
Proc. Int. Conf. Physics and Chemistry of Molecular and Oxide Superconductors, J. Low Temp. Phys. 131 993 (2003)
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Domain nucleation and growth of La0.7Ca0.3Mn0.3-δ /LaAlO3 films studied by low temperature MFM.
M. Liebmann, U. Kaiser, A. Schwarz, R. Wiesendanger, U. H. Pi, T. W. Noh, Z. G. Khim and D.-W. Kim,
J. Appl. Phys. 93 8319 (2003)
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A cryogenic scanning force microscope for the characterization of frozen biological samples
J.H. Müller, U.D. Schwarz, R. Wepf, and R. Wiesendanger,
Appl. Phys. A 76 893 (2003)
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Determination of site specific interatomic forces between an iron coated tip and the NiO(001) surface by force field spectroscopy.
S. M. Langkat, H. Hölscher, A. Schwarz, and R. Wiesendanger,
Surf. Sci. 527 12 (2003)
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Measurement of three-dimensional force fields with atomic resolution using dynamic force spectroscopy.
H. Hölscher, S. M. Langkat, A. Schwarz, and R. Wiesendanger,
Appl. Phys. Lett. 81 4428 (2002)
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A low-temperature ultrahigh vacuum scanning force microscope with a split-coil magnet.
M. Liebmann, A. Schwarz, S. M. Langkat, and R. Wiesendanger,
Rev. Sci. Instr. 73 3508 (2002)
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Dynamic force microscopy with atomic resolution at low temperatures.
A. Schwarz, U. D. Schwarz, S. Langkat, H. Hölscher, W. Allers, and R. Wiesendanger,
Applied Surface Science 188 245 (2002)
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Comment on "Damping mechanism in dynamic force microscopy"
H. Hölscher, B. Gotsmann, W. Allers, U. D. Schwarz, H. Fuchs, and R. Wiesendanger,
Phys. Rev. Lett. 88 019601 (2001)
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Measurement of conservative and dissipative tip-sample interaction forces with a dynamic force microscope using the frequency modulation technique.
H. Hölscher, B. Gotsmann, W. Allers, U. D. Schwarz, H. Fuchs, and R. Wiesendanger,
Phys. Rev. B 64 075402 (2001)
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Investigation of the swelling of human skin cells in liquid media by tapping mode scanning force microscopy.
T. Richter, J.Müller, U. D. Schwarz, R.Wepf, and R. Wiesendanger,
Appl. Phys. A 72 125 (2001)
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Simulation of Non-contact atomic force microscopy images of Xenon(111)
H. Hölscher, W. Allers, U. D. Schwarz, A. Schwarz, and R. Wiesendanger,
Appl. Phys. A 72 S35 (2001)
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Atomic resolution in scanning force microscopy: Concepts, requirements, contrast mechanisms, and image interpretation.
U.D. Schwarz, H. Hölscher, and R. Wiesendanger,
Phys. Rev. B 62 13089 (2000)
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Detection of doping atom distributions and individual dopants in InAs(110) by dynamic mode scanning force microscopy in ultrahigh vacuum
A. Schwarz, W. Allers, U. D. Schwarz, and R. Wiesendanger,
Phys. Rev. B 62 13617 (2000)
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Interpretation of ´true atomic resolution´ images of graphite(0001) in non-contact atomic force microscopy.
H. Hölscher, W. Allers, A. Schwarz, U. Schwarz, and R. Wiesendanger,
Phys. Rev. B 62 13617 (2000)
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Quantitative Analysis of Dynamic-Force-Spectroscopy Data on Graphite (0001) in the Contact and Noncontact Regimes.
H. Hölscher, A. Schwarz, W. Allers, U. D. Schwarz, and R. Wiesendanger,
Phys. Rev. B 61 12678 (2000)
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Dynamic mode scanning force microscopy study of n-InAs(110)-(1x1) at low temperatures.
A. Schwarz, W. Allers, U.D. Schwarz, and R. Wiesendanger,
Phys. Rev. B 61 2837 (2000)
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Dynamic scanning force microscopy at low temperatures
W. Allers, A. Schwarz, H. Hölscher, U. D. Schwarz, and R. Wiesendanger,
Jpn. J. Appl. Phys. 39 3701 (2000)
 (not online available)
Investigation of the mechanics of nanocontacts using a vibrating cantilever technique
U. D. Schwarz, H. Hölscher, W. Allers, A. Schwarz, and R. Wiesendanger,
Proc. NATO-ASI Workshop, Hungary (2000)
 (not online available)
Determination of tip-sample interaction potentials by dynamic force spectroscopy
H. Hölscher, W. Allers, U. D. Schwarz, A. Schwarz, and R. Wiesendanger,
Phys. Rev. Lett. 83 4780 (1999)
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Dynamic scanning force microscopy at low temperatures on a noble gas crystal: Atomic resolution on the xenon(111) surface
W. Allers, A. Schwarz, U. D. Schwarz, and R. Wiesendanger,
Europhys. Lett. 48 276 (1999)
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Dynamic scanning force microscopy at low temperatures on a van der Waals surface: graphite(0001)
W. Allers, A. Schwarz, U. D. Schwarz, and R. Wiesendanger,
Appl. Surf. Sci. 140 247 (1999)
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Simultaneous imaging of the In and As sublattice on InAs(110)-(1x1) with dynamic scanning force microscopy
A. Schwarz, W. Allers, U. D. Schwarz, and R. Wiesendanger,
Appl. Surf. Sci. 140 293 (1999)
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Calculation of the frequency shift in dynamic scanning force microscopy
H. Hölscher, U. D. Schwarz, and R. Wiesendanger,
Appl. Surf. Sci. 140 344 (1999)
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Imaging of sub-unit-cell structures in the contact mode of the scanning force microscope
H. Hölscher, W. Raberg, U. D. Schwarz, A. Hasbach, K. Wandelt, and R. Wiesendanger,
Phys. Rev. B 59 1661 (1999)
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The velocity dependence of frictional forces in point contact friction
O. Zwörner, H. Hölscher, U.D. Schwarz, and R. Wiesendanger,
Appl. Phys. A 66 263 (1998)
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Consequences of the stick-slip movement for the scanning force microscopy imaging of graphite
H. Hölscher, O. Zwörner, U.D. Schwarz, and R. Wiesendanger,
Phys. Rev. B 57 2477 (1998)
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Origin of the ferroelectric domain contrast observed in lateral force microscopy
H. Bluhm, U.D. Schwarz, and R. Wiesendanger,
Phys. Rev. B 57 161 (1998)
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A scanning force microscope with atomic resolution in ultrahigh vacuum and at low temperatures
W. Allers, A. Schwarz, U. D. Schwarz, and R. Wiesendanger,
Rev. Sci. Instr. 69 221 (1998)
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Quantitative analysis of the frictional properties of carbon compounds at low loads using friction force spectroscopy
U.D. Schwarz, O. Zwörner, P. Köster, and R. Wiesendanger,
Phys. Rev. B 56 6987 (1997)
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The frictional properties of mica and germanium sulfide investigated by means of friction force spectroscopy
U.D. Schwarz, O. Zwörner, P. Köster, and R. Wiesendanger,
Phys. Rev. B 56 6997 (1997)
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Stick-slip movement of a scanned tip on a graphite surface in scanning force microscopy
H. Hölscher, U.D. Schwarz, O. Zwörner, and R. Wiesendanger,
Z. Phys. B. 104 295 (1997)
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Preparation of probe tips with well-defined spherical apexes for scanning force spectroscopy
U.D. Schwarz, O. Zwörner, P. Köster, and R. Wiesendanger,
J. Vac. Sci. & Tech. B 15 1527 (1997)
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Modelling of the scan process in lateral force microscopy
H. Hölscher, U.D. Schwarz, and R. Wiesendanger,
Surf. Sci. 375 395 (1997)
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Tip-sample interaction in contact force microscopy
U.D. Schwarz, H. Hölscher, H. Bluhm, O. Zwörner, and R. Wiesendanger,
PTB-Bericht F 30 1 (1997)
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Nanomechanical investigations and modifications of thin films based on scanning force methods
W. Allers, C. Hahn, M. Löhndorf, S. Lukas, S. Pan, U.D. Schwarz, and R. Wiesendanger,
Nanotechnology 7 346 (1996)
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Simulation of a scanned tip on a NaF(001) surface in friction force microscopy
H. Hölscher, U.D. Schwarz, and R. Wiesendanger,
Europhys. Lett. 36 16 (1996)
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Quantitative analysis of lateral force microscopy experiments
U.D. Schwarz, P. Köster, and R. Wiesendanger,
Rev. Sci. Instr. 67 2560 (1996)
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Load-dependent topographic and friction studies of individual ion tracks in layered materials by scanning and lateral force microscopy
M. Seider, U.D. Schwarz, and R. Wiesendanger,
Phys. Rev. B 53 16180 (1996)
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Determination of Miller Indices of Side Faces of Small Crystallites from Force Microscopy Angle Measurements
A. Schwarz, U. D. Schwarz, H. Bluhm, and R. Wiesendanger,
Surf. Interf. Anal. 23 409 (1995)
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