Dr. Stefan Ochsenbein

Office: CHB 211
e-mail: sto@uw.edu


  • 2007-2011 Post-Doc, University of Washington, Seattle, WA with Prof. Daniel Gamelin
  • 2006 Ph.D., University of Bern, Switzerland with Prof. H. U. Güdel
  • 2001 Diploma, University of Bern, Switzerland with Prof. H. U. Güdel

Awards & Honors

  • 2006 Fellowship for prospective researchers by the Swiss National Science Foundation
  • 2002 Young Scientist Award for a poster presented at the Summer School on Condensed Matter Research: Magnetism in Zuoz, Switzerland



Schimpf, A. M.; Ochsenbein, S. T.; Gamelin, D. R. "Surface Contributions to Mn2+ Spin Dynamics in Colloidal Doped Quantum Dots. J. Phys. Chem. Lett. 2015, 6, 457-463. (view)


Raskin, M.; Stiehm, T.; Cohn, A. W.; Whitaker, K. M.; Ochsenbein, S. T.; de Vasconcellos, S. M.; Brandt, M. S.; Gamelin, D. R.; Bratschitsch, R. "Ultrafast spin dynamics in magnetic wide-bandgap semiconductors." Phys. Status Solidi B 2014, 251, 1685-1693. (view)


Schlenker, C. W.; Chen, K.-S.; Yip, H.-L.; Li, C.-Z.; Bradshaw, L. R.; Ochsenbein, S. T.; Ding, F.; Li, X.; Gamelin, D. R.; Jen, A. K.-Y.; Ginger, D. S. "Polymer triplet energy levels need not limit photocurrent collection in organic solar cells." J. Am. Chem. Soc., 2012, 134, 19661-19668. (view)

Schimpf, A. M.; Ochsenbein, S. T.; Buonsanti, R.; Milliron, D. J.; Gamelin, D. R. "Comparison of Extra Electrons in Colloidal n-Type Al3+-Doped and Photochemically Reduced ZnO Nanocrystals" Chem. Commun., 2012, 48, 9352−9354.(view)


Whitaker, K. M.; Raskin, M.; Kiliani, G.; Beha, K.; Ochsenbein, S. T.; Janßen, N.; Fonin, M.; Rüdiger, U.; Leitenstorfer, A.; Gamelin, D. R.; Bratschitsch, R. "Spin-on Spintronics: Ultrafast Electron Spin Dynamics in ZnO and Zn 1-xCoxO Sol-Gel Films." Nano Letters, 2011, 11, 335-3360. (view)

Ochsenbein, S. T.; Gamelin, D. R. "Quantum Oscillations in Magnetically Doped Colloidal Nanocrystals." Nature Nanotechnology, 2011, 6, 112–115. ( view)


Whitaker, K. M.; Ochsenbein, S. T.; Smith, A. L.; Echodu, D. C.; Robinson, B. H.; Gamelin, D. R. "Hyperfine Coupling in Colloidal n-type ZnO Quantum Dots: Effects on Electron Spin Relaxation." J. Phys. Chem. C, 2010, 114, 14467–14472. (view)

White, M. A.; Lovejoy, T. C.; Ochsenbein, S. T.; Olmstead, M. A.; Gamelin, D. R. "Sputtering Induced Co0 Formation in X-Ray Photoelectron Spectroscopy of Nanocrystalline Zn1-xCoxO Spinodal Enrichment Models." J. Appl. Phys., 2010, 107, 103917. (view)

Beaulac, R.; Ochsenbein, S. T.; Gamelin, D. R. "Colloidal Transition-Metal-Doped Quantum Dots." Chapter 11 in Nanocrystal Quantum Dots. Edited by V. I. Klimov, 2010, Taylor & Francis, New York. (view)

Dreiser, J.; Waldmann, O.; Dobe, C.; Carver, G.; Ochsenbein, S. T.; Sieber, A.; Güdel, H. U.; van Duijn, J.; Taylor, J.; Podlesnyak, A., "Quantized antiferromagnetic spin waves in the molecular Heisenberg ring CsFe8." Phys. Rev. B, 2010, 81, 024408.


Ochsenbein, S. T.; Feng, Y.; Whitaker, K. M.; Badaeva, E.; Liu, W. K.; Li, X.; Gamelin, D. R. "Charge-Controlled Magnetism in Colloidal Doped Semiconductor Nanocrystals." Nature Nanotechnol., 2009, 4, 681-687. (view)

Badaeva, E.; Isborn, C. M.; Feng, Y.; Ochsenbein, S. T.; Gamelin, D. R.; Li, X. "Theoretical Characterization of Electronic Transitions in Co2+- and Mn2+-Doped ZnO Nanocrystals." J. Phys. Chem. C, 2009, 113, 8710-8717. (view)

Häfliger, P. S.; Ochsenbein, S. T.; Trusch,B.; Guedel, H. U.; Furrer, A. "Spin Dynamics in the Manganese Tetramer Compund α-MnMoO4." J. Phys.: Condens Matter, 2009, 21, 026019.


White, M. A.; Ochsenbein, S. T.; Gamelin, D. R. "Colloidal Nanocrystals of Wurtzite Zn1-xCoxO (0 < x < 1): Models of Spinodal Decomposition in an Oxide Diluted Magnetic Semiconductor." Chem. Mater., 2008, 20, 7107-7116. (view)

Beaulac, R.; Archer, P. I.; Ochsenbein, S. T.; Gamelin, D. R. "Mn2+-Doped CdSe Quantum Dots: New Inorganic Materials for Spin-Electronics and Spin-Photonics." Advanced Functional Materials, 2008, 18, 3873-3891 (Feature Article). (view)

Whitaker, K. M.; Ochsenbein, S. T.; Polinger, V. Z.; Gamelin, D. R. "Electron Confinement Effects in the EPR Spectra of Colloidal n-Type ZnO Quantum Dots." J. Phys. Chem. C, 2008, 112, 14331-14335. (view)

Ochsenbein, S. T.; Tuna, F.; Rancan, M.; Davies, R. S. G.; Muryn, C. A.; Waldmann, O.; Bircher, R.; Sieber, A.; Carver, G.; Mutka, H.; Fernandez-Alonso, F.; Podlesnyak, A.; Engelhardt, L. P.; Timco, G. A.; Guedel, H. U.; Winpenny, R. E. P. "Studies of Finite Molecular Chains: Synthesis, Structural, Magnetic and Inelastic Neutron Scattering Studies of Hexa- and Heptanuclear Chromium Horseshoes." Chem. Eur. J., 2008, 14, 5144-5158.


Ochsenbein, S. T.; Waldmann, O.; Sieber, A.; Carver, G.; Bircher, R.; Guedel, H. U.; Davies, R. S. G.; Timco, G. A.; Winpenny, R. E. P.; Mutka, H.; Fernandez-Alonso, F. "Standing spin waves in an antiferromagnetic molecular Cr6 horseshoe." Europhys. Lett., 2007, 79, 17003.

Schnelzer, L.; Waldmann, O.; Horvatic, M.; Ochsenbein, S. T.; Kramer, S.; Berthier, C.; Guedel, H. U.; Pilawa, B. "Huge Transverse Magnetic Polarization in the Field-Induced Phase of the Antiferromagnetic Molecular Wheel CsFe8." Phys. Rev. Lett., 2007, 99, 087201.

Koizumi, S.; Nihei, M.; Shiga, T.; Nakano, M.; Nojiri, H.; Bircher, R.; Waldmann, O.; Ochsenbein, S. T.; Guedel, H. U.; Fernandez-Alonso, F.; Oshio, H. "A wheel-shaped single-molecule magnet of [Mn II 3 Mn III 4 ] quantum tunneling of magnetization under static and pulse magnetic fields." Chem. Eur. J., 2007, 13, 8445-8453.


Alley K. G.; Bircher, R.; Waldmann, O.; Ochsenbein S. T.; Guedel H. U.; Moubaraki, B.; Murray K. S.; Fernandez-Alonso, F.; Abrahams B. F.; Boskovic, C. "Mixed-valent cobalt spin clusters: a hexanuclear complex and a one-dimensional coordination polymer comprised of alternating hepta- and mononuclear fragments." Inorg. Chem., 2006, 45, 8950-8957.

Bircher, R.; Chaboussant, G.; Dobe, C.; Guedel, H. U.; Ochsenbein, S. T.; Sieber, A.; Waldmann, O. "Single-molecule magnets under pressure." Adv. Funct. Mater., 2006, 16, 209-220.

Low, D. M.; Rajaraman, G.; Helliwell, M.; Timco, G.; van Slageren, J.; Sessoli, R.; Ochsenbein, S. T.; Bircher, R.; Dobe, C.; Waldmann, O.; Guedel, H.U.; Adams, M. A.; Ruiz, E.; Alvarez, S.; McInnes, E. J. L. "A family of ferro- and antiferromagnetically coupled decametallic chromium(III) wheels." Chem. Eur. J., 2006, 12, 1385-1396.

Sieber, A.; Foguet-Albiol, D.; Waldmann, O.; Ochsenbein, S. T.; Carver, G.; Mutka, H.; Fernandez-Alonso, F.; Mezouar, M.; Weber, H. P.; Christou, G.; Guedel, H. U. "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., 2006, 74, 024405.

Waldmann, O.; Dobe, C.; Ochsenbein, S. T.; Guedel, H. U.; Sheikin, I. "Field-Induced Magnetoelastic Instabilities in Antiferromagnetic Molecular Wheels." Phys. Rev. Lett., 2006, 96, 027206.


Bircher, R.; Chaboussant, G.; Ochsenbein, S. T.; Fernandez-Alonso, F.; Guedel, H. U.; Brechin, E. K. "Inelastic neutron scattering study of undeuterated [Mn9O7(OAc)11(thme)(py)3(H2O)2]." Polyhedron, 2005, 24, 2455-2458.

Sieber, A.; Boskovic, C.; Bircher, R.; Waldmann, O.; Ochsenbein, S. T.; Chaboussant, G.; Guedel, H. U.; Kirchner, N.; van Slageren, J.; Wernsdorfer, W.; Neels, A.; Stoeckli-Evans, H.; Janssen, S.; Juranyi, F.; Mutka, H. "Synthesis and Spectroscopic Characterization of a New Family of Ni4 Spin Clusters." Inorg. Chem., 2005, 44, 4315-4325.

Sieber, A.; Foguet-Albiol, D.; Waldmann, O.; Ochsenbein, S. T.; Bircher, R.; Christou, G.; Fernandez-Alonso, F.; Mutka, H.; Guedel, H. U. "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., 2005, 44, 6771-6776.


Chaboussant, G.; Basler, R.; Guedel, H. U.; Ochsenbein, S.; Parkin, A.; Parsons, S.; Rajaraman, G.; Sieber, A.; Smith Andrew, A.; Timco Grigore, A.; Winpenny Richard, E. P. "Nickel pivalate complexes: structural variations and magnetic susceptibility and inelastic neutron scattering studies." Dalton. Trans., 2004, 2758-2766.

Chaboussant, G.; Basler, R.; Sieber, A.; Ochsenbein, S. T.; Guedel, H. U. "Neutron scattering studies of magnetic molecular spin clusters." Physica B, 2004, 350, e51-e54.

Chaboussant, G.; Ochsenbein, S. T.; Sieber, A.; Guedel, H. U.; Barbara, B.; Mueller, A.; Mutka, H. "Probing mixing of quantum spin states in frustrated molecular magnets with neutron scattering." Phys. Status Solidi C, 2004, 1, 3399-3401.

Chaboussant, G.; Ochsenbein, S. T.; Sieber, A.; Guedel, H. U.; Mutka, H.; Mueller, A.; Barbara, B. "Mechanism of ground state selection in the frustrated molecular spin cluster V15." Europhys. Lett., 2004, 66, 423-429.

Chaboussant, G.; Sieber, A.; Ochsenbein, S.; Guedel, H. U.; Murrie, M.; Honecker, A.; Fukushima, N.; Normand, B. "Exchange interactions and high-energy spin states in Mn12-acetate." Phys. Rev. B, 2004, 70, 104422.

Shaw, R.; Tidmarsh, I. S.; Laye, R. H.; Breeze, B.; Helliwell, M.; Brechin, E. K.; Heath, S. L.; Murrie, M.; Ochsenbein, S.; Guedel, H.-U.; McInnes, E. J. L. "Supertetrahedral decametallic Ni(II) clusters directed by μ6-tris-alkoxides." Chem. Commun., 2004, 1418-1419.


Basler, R.; Boskovic, C.; Chaboussant, G.; Guedel H. U.; Murrie, M.; Ochsenbein S. T.; Sieber, A. "Molecular spin clusters: new synthetic approaches and neutron scattering studies." Chem. Phys. Chem., 2003, 4, 910-926.

Laye, R. H.; Murrie, M.; Ochsenbein, S.; Bell, A. R.; Teat, S. J.; Raftery, J.; Guedel, H. U.; McInnes, E. J. L. "Solvothermal syntheses of high-nuclearity vanadium(III) clusters." Chem. Eur. J., 2003, 9, 6215-6220.

Ochsenbein, S. T.; Chaboussant, G.; Sieber, A.; Guedel, H. U.; Janssen, S.; Furrer, A.; Attfield, J. P. "Magnetic cluster excitations in the antiferromagnetic phase of α-MnMoO4." Phys. Rev. B, 2003, 68, 092410.


Chaboussant, G.; Basler, R.; Sieber, A.; Ochsenbein, S. T.; Desmedt, A.; Lechner, R. E.; Telling, M. T. F.; Kogerler, P.; Muller, A.; Guedel, H. U. "Low-energy spin excitations in the molecular magnetic cluster V15." Europhys. Lett., 2002, 59, 291-297.

Ochsenbein, S. T.; Murrie, M.; Rusanov, E.; Stoeckli-Evans, H.; Sekine, C.; Guedel, H. U. "Synthesis, structure, and magnetic properties of the single-molecule magnet [Ni21(cit)12(OH)10(H2O)10]16." Inorg. Chem., 2002, 41, 5133-5140.