Former Members of the Güdel Group

Prof. Oliver Waldmann;
postdoc from February 2004 until August 2007

Contact Oliver Waldmann, ow2.JPG (13 kByte)
Prof. Dr. Oliver Waldmann
Physikalisches Institut
Universität Freiburg
Hermann-Herder-Str. 3
D - 79104 Freiburg
Germany
Phone +49 (0)761 203 5717
Fax +49 (0)761 203 5707
e-Mail oliver.waldmann@physik.uni-freiburg.de
Web http://www.mnm.uni-freiburg.de

Education

1987 - 1994 Studies of physics at the Technische Universität München (Munich, Germany).

8/1993 - 8/1994 Diploma thesis at the Walther-Meißner-Institut für Tieftemperaturforschung, Prof. Klaus Andres (Garching, Germany),
with the title "Magnetische Eindringtiefe in Bi2Sr2CaCu2O8+x als Funktion der Dotierung".

4/1995 - 3/1998 PhD thesis at the Physikalisches Institut III, Prof. Paul Müller, Universität Erlangen-Nürnberg (Erlangen, Germany),
with the title "Intramolekulare antiferromagnetische Kopplung in supramolekularen Gitterstrukturen"

4/1998 - 1/2002 Scientific assistant at the Physikalisches Institut III, Prof. Paul Müller, Universität Erlangen-Nürnberg (Erlangen, Germany).

May 2003 Habiltation at the Universität Erlangen-Nürnberg (Erlangen, Germany),
with the titel "Supramolekulare Nanomagnete: Quantenphysik im mesoskopischen Grenzbereich"

2/2002 - 1/2004 Visiting scientist at the Department of Physics, Prof. Arthur J. Epstein, The Ohio State University (Columbus, Ohio, USA),
financed by a research fellowship of the Deutsche Forschungsgemeinschaft and by Prof. Epstein.

Research field

 

Publications

Rebecca H. Laye, Finn K. Larsen, Jacob Overgaard, Christopher A. Muryn, Eric J. L. McInnes, Eva Rentschler, Veronica Sanchez, Simon J. Teat, Hans U. Güdel, Oliver Waldmann, Grigore A. Timco and Richard E. P. Winpenny
A family of heterometallic wheels containing potentially fourteen hundred siblings
Chem. Commun. 1125-1127 (2005)      Abstract      Full Text (PDF)      Supplementary Data (PDF)      Crystal Structure Data (CIF format)

Andreas Sieber, Colette Boskovic, Roland Bircher, Oliver Waldmann, Stefan T. Ochsenbein, Grégory Chaboussant, Hans U. Güdel, Nadeschda Kirchner, Joris van Slageren, Wolfgang Wernsdorfer, Antonia Neels, Helen Stoeckli-Evans, Stefan Janssen, Fanni Juranyi and Hannu Mutka
Synthesis and Spectroscopic Characterization of a New Family of Ni4 Spin Clusters
Inorg. Chem. 44, 4315-4325 (2005)      Abstract      Full Text (PDF)      Supplementary Data (PDF)      Crystal Structure Data (CIF format)

Andreas Sieber, Roland Bircher, Oliver Waldmann, Graham Carver, Grégory Chaboussant, Hannu Mutka and Hans-Ulrich Güdel
Effect of Pressure on the Magnetic Anisotropy in the Single-Molecule Magnet Mn12-Acetate: An Inelastic Neutron Scattering Study
Angew. Chem. Int. Ed. 44, 4239-4242 (2005)      Abstract      Full Text (PDF)      Supplementary Data (PDF)
Angew. Chem. 117, 4311-4314 (2005)      Abstract      Full Text (PDF)      Supplementary Data (PDF)

O. Waldmann, C. Dobe, H. Mutka, A. Furrer and H. U. Güdel
Néel-Vector Tunneling in Antiferromagnetic Molecular Clusters
Phys. Rev. Lett. 95, 057202/1-4 (2005)      Abstract      Full Text (PDF)

Andreas Sieber, Dolos Foguet-Albiol, Oliver Waldmann, Stefan T. Ochsenbein, Roland Bircher, George Christou, Felix Fernandez-Alonso, Hannu Mutka and Hans U. Güdel
Direct Determination of the Anisotropy and Exchange Splittings in the Dimeric Single-Molecule Magnet [Mn4O3Cl4(O2CEt)3(py)3]2·8MeCN by Inelastic Neutron Scattering
Inorg. Chem. 44, 6771-6776 (2005)      Abstract      Full Text (PDF)

O. Waldmann and H. U. Güdel
Many-spin effects in inelastic neutron scattering and electron paramagnetic resonance of molecular nanomagnets
Phys. Rev. B 72, 094422/1-17 (2005)      Abstract      Full Text (PDF)

O. Waldmann, G. Carver, C. Dobe, D. Biner, A. Sieber, H. U. Güdel, H. Mutka, J. Ollivier and N. E. Chakov
Magnetic relaxation studies on a single-molecule magnet by time-resolved inelastic neutron scattering
Appl. Phys. Lett. 88, 042507/1-3 (2006)      Abstract      Full Text (PDF)

O. Waldmann, C. Dobe, S. T. Ochsenbein, H. U. Güdel and I. Sheikin
Field-Induced Magnetoelastic Instabilities in Antiferromagnetic Molecular Wheels
Phys. Rev. Lett. 96, 027206/1-4 (2006)      Abstract      Full Text (PDF)

David M. Low, Gopalan Rajaraman, Madeleine Helliwell, Grigore Timco, Joris van Slageren, Roberta Sessoli, Stefan T. Ochsenbein, Roland Bircher, Christopher Dobe, Oliver Waldmann, Hans-Ulrich Güdel, Mark A. Adams, Eliseo Ruiz, Santiago Alvarez and Eric J. L. McInnes
A Family of Ferro- and Antiferromagnetically Coupled Decametallic Chromium(III) Wheels
Chem. Eur. J. 12, 1385-1396 (2006)      Abstract      Full Text (PDF)

Roland Bircher, Grégory Chaboussant, Chris Dobe, Hans U. Güdel, Stefan T. Ochsenbein, Andreas Sieber and Oliver Waldmann
Single-Molecule Magnets Under Pressure
Adv. Funct. Mater. 16, 209-220 (2006)      Abstract      Full Text (PDF)

Oliver Waldmann, Hans U. Güdel, Timothy L. Kelly and Laurence K. Thompson
The Mixed-Valent Manganese [3×3] Grid [Mn(III)4Mn(II)5(2poap-2H)6](ClO4)10·10H2O, a Mesoscopic Spin-1/2 Cluster
Inorg. Chem. 45, 3295-3300 (2006)      Abstract      Full Text (PDF)      Supplementary Data (PDF)

O. Waldmann, G. Carver, C. Dobe, D. Biner, A. Sieber, H. U. Güdel, H. Mutka and J. Ollivier
Magnetic relaxation in the single-molecule magnet Mn12ac
ILL Annual Report 2005, 22-23 (2006)      Abstract      Full Text (PDF)

A. Sieber, D. Foguet-Albiol, O. Waldmann, S. T. Ochsenbein, G. Carver, H. Mutka, F. Fernandez-Alonso, M. Mezouar, H. P. Weber, G. Christou and H. U. Güdel
Pressure dependence of the exchange interaction in the dimeric single-molecule magnet [Mn4O3Cl4(O2CEt)3(py)3]2 from inelastic neutron scattering
Phys. Rev. B 74, 024405/1-4 (2006)      Abstract      Full Text (PDF)

O. Waldmann, C. Dobe, H. U. Güdel and H. Mutka
Quantum dynamics of the Néel vector in the antiferromagnetic molecular wheel CsFe8
Phys. Rev. B 74, 054429/1-12 (2006)      Abstract      Full Text (PDF)

Kerwyn G. Alley, Roland Bircher, Oliver Waldmann, Stefan T. Ochsenbein, Hans U. Güdel, Boujemaa Moubaraki, Keith S. Murray, Felix Fernandez-Alonso, Brendan F. Abrahams and Colette Boskovic
Mixed-Valent Cobalt Spin Clusters: a Hexanuclear Complex and a One-Dimensional Coordination Polymer Comprised of Alternating Hepta- and Mononuclear Fragments
Inorg. Chem. 45, 8950-8957 (2006)      Abstract      Full Text (PDF)      Supplementary Data (PDF)      Crystal Structure Data (CIF format)

Oliver Waldmann, Graham Carver, Chris Dobe, Andreas Sieber, Hans U. Güdel and Hannu Mutka
Direct Identification of the Minority and Majority Species in the Single-Molecule Magnet Mn12-Acetate by Inelastic Neutron Scattering
J. Am. Chem. Soc. 129, 1526-1527 (2007)      Abstract      Full Text (PDF)

Ayuk M. Ako, Oliver Waldmann, Valeriu Mereacre, Frederik Klöwer, Ian J. Hewitt, Christopher E. Anson, Hans U. Güdel and Annie K. Powell
Odd-Numbered FeIII Complexes: Synthesis, Molecular Structure, Reactivity, and Magnetic Properties
Inorg. Chem. 46, 756-766 (2007)      Abstract      Full Text (PDF)      Supplementary Data (PDF)      Crystal Structure Data (CIF format)

O. Waldmann, R. Bircher, G. Carver, A. Sieber, H. U. Güdel and H. Mutka
Exchange-coupling constants, spin density map, and Q dependence of the inelastic neutron scattering intensity in single-molecule magnets
Phys. Rev. B 75, 174438/1-11 (2007)      Abstract      Full Text (PDF)

S. T. Ochsenbein, O. Waldmann, A. Sieber, G. Carver, R. Bircher, H. U. Güdel, R. S. G. Davies, G. A. Timco, R. E. P. Winpenny, H. Mutka and F. Fernandez-Alonso
Standing spin waves in an antiferromagnetic molecular Cr6 horseshoe
Europhys. Lett. 79, 17003/1-6 (2007)      Abstract      Full Text (PDF)

L. Schnelzer, O. Waldmann, M. Horvatić, S. T. Ochsenbein, S. Krämer, C. Berthier, H. U. Güdel and B. Pilawa
Huge Transverse Magnetic Polarization in the Field-Induced Phase of the Antiferromagnetic Molecular Wheel CsFe8
Phys. Rev. Lett. 99, 087201/1-4 (2007)      Abstract      Full Text (PDF)

Satoshi Koizumi, Masayuki Nihei, Takuya Shiga, Motohiro Nakano, Hiroyuki Nojiri, Roland Bircher, Oliver Waldmann, Stefan T. Ochsenbein, Hans U. Güdel, Felix Fernandez-Alonso and Hiroki Oshio
A Wheel-Shaped Single-Molecule Magnet of [MnII3MnIII4]: Quantum Tunneling of Magnetization under Static and Pulse Magnetic Fields
Chem. Eur. J. 13, 8445-8453 (2007)      Abstract      Full Text (PDF)      Journal Cover Picture      Journal Cover Picture (PDF)

Oliver Waldmann, Ayuk M. Ako, Hans U. Güdel and Annie K. Powell
Assessment of the Anisotropy in the Molecule Mn19 with a High-Spin Ground State S = 83/2 by 35 GHz Electron Paramagnetic Resonance
Inorg. Chem. 47, 3486-3488 (2008)      Abstract      Full Text (PDF)      DOI-Link     

Stefan T. Ochsenbein, Floriana Tuna, Marzio Rancan, Rachel S. G. Davies, Christopher A. Muryn, Oliver Waldmann, Roland Bircher, Andreas Sieber, Graham Carver, Hannu Mutka, Felix Fernandez-Alonso, Andrew Podlesnyak, Larry P. Engelhardt, Grigore A. Timco, Hans U. Güdel and Richard E. P. Winpenny
Studies of Finite Molecular Chains: Synthesis, Structural, Magnetic and Inelastic Neutron Scattering Studies of Hexa- and Heptanuclear Chromium Horseshoes
Chem. Eur. J. 14, 5144-5158 (2008)      Abstract      Full Text (PDF)      DOI-Link      Journal Cover Picture      Journal Cover Picture (PDF)      DOI-Link     

O. Waldmann, T. C. Stamatatos, G. Christou, H. U. Güdel, I. Sheikin and H. Mutka
Quantum Phase Interference and Néel-Vector Tunneling in Antiferromagnetic Molecular Wheels
Phys. Rev. Lett. 102, 157202/1-4 (2009)      Abstract      Full Text (PDF)      DOI-Link     

J. Dreiser, O. Waldmann, C. Dobe, G. Carver, S. T. Ochsenbein, A. Sieber, H. U. Güdel, J. van Duijn, J. Taylor and A. Podlesnyak
Quantized antiferromagnetic spin waves in the molecular Heisenberg ring CsFe8
Phys. Rev. B 81, 024408/1-8 (2010)      Abstract      Full Text (PDF)      DOI-Link     

Jan Dreiser, Oliver Waldmann, Graham Carver, Christopher Dobe, Hans-Ulrich Güdel, Høgni Weihe and Anne-Laure Barra
High-Frequency Electron-Spin-Resonance Study of the Octanuclear Ferric Wheel CsFe8
Inorg. Chem. 49, 8729-8735 (2010)      Abstract      Full Text (PDF)      DOI-Link     

new Michael L. Baker, Oliver Waldmann, Stergios Piligkos, Roland Bircher, Olivier Cador, Stefano Carretta, David Collison, Felix Fernandez-Alonso, Eric J. L. McInnes, Hannu Mutka, Andrew Podlesnyak, Floriana Tuna, Stefan Ochsenbein, Roberta Sessoli, Andreas Sieber, Grigore A. Timco, Høgni Weihe, Hans U. Güdel and Richard E. P. Winpenny
Inelastic neutron scattering studies on the odd-membered antiferromagnetic wheel Cr8Ni
Phys. Rev. B 86, 064405/1-11 (2012)      Abstract      Full Text (PDF)      DOI-Link     

 

Links

Visit Oliver Waldmann's new Website at the University of Freiburg: www.mnm.uni-freiburg.de

Last modified: 30.10.12 by Gabriela Frei