Publications

 

D. Wang, H.B. Braun, and Y. Zhou, Dynamical mass generation for ferromagnetic skyrmions in two dim dimensions, J. Mag. Magn. Mat. 564, 170062 (2023).

C. Wessler, B. Roessli, K.W. Krämer, U. Stuhr, A. Wildes, H.B. Braun, and M. Kenzelmann, Dipolar spin waves and tunable band gap at the Dirac points in the 2D magnet ErBr3, Comm. Phys. 5 Art No : 185 (2022).

C. Wessler, B. Roessli, K.W. Krämer, L. Keller, B. Delley, D. Cheptiakov, H.B. Braun, and M. Kenzelmann,     Observation of plaquette fluctuations in the spin-1/2 honeycomb lattice, npj Quantum Materials 5 :85 (2020).  

H.B. Braun, M. Charilaou, and J.F. Löffler, Skyrmion lines, monopoles and emergent electromagnetism in nanowires, in “Magnetic Nano and Microwires” ed. M. Vazquez (Elsevier), (2020)  (featured as cover illustration of the Book)

Yu Li, L. Pierobon, M. Charilaou, H.B. Braun, N. R. Walet, J. F. Löffler, J. J. Miles, C. Moutafis, Tuneable terahertz oscillation arising from Bloch-point dynamics in chiral magnets, Phys. Rev. Research 2, 033006 (2020). 

 X. Xing, Y. Zhou, and H.B. Braun, Skyrmion Tubes as Magnonic Waveguides   , Phys. Rev. Applied 13, 034051 (2020). 

 M. Charilaou, H.B. Braun, and J. F. Löffler, Monopole-induced emergent electric fields in ferromagnetic nanowires, Phys. Rev. Lett. 121, 097202 (2018).   

 H.B. Braun, Introductory Chapter, in ”Topology in Magnetism”, eds : J. Zang, V. Cros and A. Hoffmann, ISBN 978-3-319-97334-0, Springer, 40 pages, (2018). 

 H.B. Braun, Topology of static and dynamical spin textures : skyrmions, vortices and hedgehogs, 25 pages,
in “Topological Matter — Topological Insulators, Skyrmions, and Majoranas”, Forschungszentrum Jülich GmBH (ISBN 978-3-95806-202-3) (2017). 

 Y. Liu, N. Lei, W. Zhao, W. Liu, A. Ruotolo, H.B. Braun, and Y. Zhou, Chopping skyrmions from magnetic chiral domains with uniaxial stress in magnetic nanowire, Appl. Phys. Lett 111, 022406 (2017). 

 *Y. Zhou, E. Iacocca, A. Awad, R. K. Dumas, F. C. Zhang, H.B. Braun, and J. Åkerman, Dynamically stabilized magnetic skyrmions, Nature Communications (2015) [doi : 10.1038/NCOMMS9193] ; [ISI Highly Cited Publication]. (IF 12) 

 F. Ma, Y. Zhou, H.B. Braun, W.S. Lew, A skyrmion based dynamic magnonic crystal, Nano Lett. 15 4029-4036 (2015). (IF 12) H.B. Braun Magnetic Monopoles — Quenching the Fire in Spin Ice, News and Views, Nature Physics 10, 88 (2014). 

 H.B. Braun, R.V. Hugli, L.J. Heyderman, “Nordpol ohne Sudpol”, Spektrum der Wissenschaft (German Version of ‘Scientific American’), p. 48-57, February 2014. also reprinted in ”Spektrum Spezial — Exotische Materialien”, January-March 2014. 

 R.V. Chopdekar, G. Duff, R.V. Hugli, E. Mengotti, D.A. Zanin, L.J. Heyderman, and H.B. Braun, “Controlling vortex chirality in patterned hexagonal magnetic nanostructures”, New Journal of Physics 15, 125033 (2013). 

 H.B. Braun, R.V. Hugli, L.J. Heyderman, ‘Des aimants qui perdent le nord”, Pour La Science (French Version of ‘Scientific American’), Dossier ‘Les paradoxes de la matière’, p. 34- 41, April-June 2013. (special issue including contributions by A. Geim, J. Pendry (Imperial Coll.) & H. Atwater (Caltech))  

*H.B. Braun, “Topological effects in nanomagnetism : from superparamagnetism to chiral quantum solitons”, Advances in Physics 61, 1-116, (2012).
[ISI Highly Cited Publication].  

 G. Fiedler, J. Fidler, J. Lee, T. Schrefl, R. L. Stamps, H.B. Braun, D. Suess, “Direct calculation of the attempt frequency of magnetic structures using the finite element method”, J. Appl. Phys. 111, 093917 (2012). 

 N. Grisewood, J.L. Eves, T. Usher, and H.B. Braun, “Chiral magnetization configurations in magnetic nanostructures in the presence of Dzyaloshinski-Moriya interactions”, J. Appl. Phys. 111, 07C706 (2012). 

 R.V. Hugli, G. Duff, B. O’Conchuir, E. Mengotti, L.J. Heyderman, A. Fraile Rodrı́guez, F. Nolting, and H.B. Braun, “Emergent magnetic monopoles, disorder and avalanches in artificial kagome spin ice (invited)”, J. Appl. Phys. 111, 07E103 (2012). 

 L.J. Heyderman, F. Nolting, H.B. Braun, “Nanomagnete erzeugen magnetische Monopole”, Spektrum der Wissenschaft, March (2011). (German Version of ‘Scientifc  American’) 

  *E. Mengotti, L.J. Heyderman, A. Fraile Rodriguez, F. Nolting, R.V. Hugli, H.B. Braun, “Real-space observation of emergent magnetic monopoles and associated Dirac strings in artificial kagome spin ice”, Nature Physics 7, 68-74 (2011) [ISI Highly Cited Publication; featured as cover illustration of the January 2011 issue of Nature Physics]  

 J.L. Eves, N. Grisewood, R.V. Hugli, H.B. Braun, “Breather states in magnetic domain wall racetrack memory samples”, J. Magn. Magn. Mater 322, 1381 (2010). 

 E. Mengotti, L.J. Heyderman, A. Fraile Rodriguez, A. Bisig, L. Le Guyader, F. Nolting, H.B. Braun, “Dipolar energy states in clusters of perpendicular magnetic nanoislands”, J. Appl. Phys. 105, 113113 (2009). 

 E. Mengotti, L.J. Heyderman, A. Fraile Rodriguez, A. Bisig, L. Le Guyader, F. Nolting, H.B. Braun, “Building blocks of an artificial Kagome spin ice : Photoemission electron microscopy of arrays of ferroma- gne islands”, Phys. Rev. B 78, 144402 (2008). [highlighted in Nature Physics, 4, 832 (Nov 2008) as News and Views article : “Artificial spin ice : Increasingly frustrated”]

 C.D. Pemmaraju, R. Hanafin, T. Archer, H.B. Braun, S. Sanvito, “Impurity-Ion pair induced high-Tc ferromagnetism in ZnO :Co”, Phys. Rev. B 78, 054428 (2008). • (selected as Editor’s digest) 

 H.B. Braun, J. Kulda, B. Roessli, D. Visser, K. Kramer, H.U. Gudel, and P. Boni, “Chiral Quantum Excitations in the anisotropic antiferromagnet CsCoBr3 ”, J. Magn. Magn. Mater. 310, 1194 (2007). 

 J.F. Loffler and H.B. Braun, “Magnetization response in bulk nanostructured magnets”, Mater. Sci. Eng. A 449-451, 407 (2007). 

 B. Binz, H.B. Braun, T.M. Rice, and M. Sigrist, “Magnetic Domain Formation in Itinerant Metamagnets”, Phys. Rev. Lett. 96, 196406 (2006). (IF 9) 

 H.B. Braun, “Scaling Behavior of Thermally Activated Magnetization Reversal in Nanomagnets”, J. Appl. Phys. 99, 08F908 (2006). 

 V.R. Shah, C. Schanzer, P. Boni, and H.B. Braun, “Interface and Magnetic Characterization of Fe- CoV/NiO/FeCoV Trilayers”, Physics of Metals and Metallography 101, S73-S77 (2006). 

 V.R. Shah, C. Schanzer, P. Boni, and H.B. Braun, “Interface and Magnetic Characterization of FM/AF/FMTrilayers”, NATO ASI Series II 226, Kluwer, Academic Press 179-194 (2006). 

 *H.B. Braun, J. Kulda, B. Roessli, D. Visser, K. Kramer, H.U. Gudel, and P. Boni, “Emergence of Soliton Chirality in a Quantum Antiferromagnet”, Nature Physics 1, 159-163 (2005). [see also accompanying News and Views article by B. Lake, Nature Physics 1, 143-144 (2005)] 

 J.F. Loffler, H.B. Braun, W. Wagner, G. Kostorz and A. Wiedenmann, “Magnetization processes in nanostructured metals and small-angle neutron scattering”, Phys. Rev. B 71, 134410 (2005). 

 V.R. Shah, C. Schanzer, P. Boni, and H.B. Braun, “Thickness Dependence of Magnetization Reversal in FM/AF/FM Trilayers”, J. Magn. Magn. Mater. 286, 484 (2005). 

 C. Schanzer, V.R. Shah, P. Boni, T. Gutberlet, M. Gupta and H.B. Braun “Magnetic Depth Profiling of Trilayers by Polarized Neutron Reflectivity”, Physica B 356, 46-50 (2005). 

 H.B. Braun, J. Kulda, P. Boni, B. Roessli, D. Visser, K. Kramer & H.U. Gudel, “Observing chirality in quantum spin solitons”, Annual report, Scientific Highlights, Institute Laue-Langevin (ILL) press, 2004. 

 J. Kulda and H.B. Braun “Spin Chains with a chiral twist”, Highlights of ILL Research : Neutrons and Magnetic Materials Institute Laue-Langevin (ILL) press, 2004. 

 A. Bill and H.B. Braun “Magnetic Properties of Exchange Springs”, J. Magn. Magn. Mater. 272, 1266 (2004). 

 H.B. Braun, “Solitons, Instantons and Mesoscopic Quantum Phenomena in Magnetism”, in Exploring the Quantum/Classical Frontier — Recent Advances in Macroscopic Quantum Phenomena, edited by J.R. Friedman and S. Han, Nova, New York, (2003), pp. 253-298. 

 O. Zaharko, P.M. Oppeneer, H. Grimmer, H.Ch. Mertins, D. Abramsohn, F. Schafer, A. Bill, and H.B. Braun, “Exchange Coupling in Fe/NiO/Co Films Studied by Soft x-Ray Resonant Magnetic Reflectivity”, Phys Rev. B 66, 134406 (2002). 

 J.F. Loffler, H.B. Braun, and W. Wagner, “Magnetic Correlations in Nanostructured Ferromagnets” (reply), Phys. Rev. Lett. 87, 149702 (2001). (IF 9) 

 J. F. Loffler, W. Wagner and H. B. Braun, “Magnetism of Nanostructured Ferromagnets — Experi- ments and Theoretical Model”, Scripta Mater. 44, 1425 (2001). 

 J.F. Loffler, H.B. Braun, and W. Wagner, G. Kostorz and A. Wiedenmann, “Crossover in the Magnetic Properties of Nanostructured Metals”, Mater. Sci. Eng. A 304-306, 1050 (2001). 

 ∗ J.F. Loffler, H.B. Braun, and W. Wagner, “Magnetic Correlations in Nanostructured Ferromagnets”, Phys. Rev. Lett. 85, 1990 (2000). (IF 9) 

 H.B. Braun, “Stochastic Magnetization Dynamics in Magnetic Nanostructures — From Néel- Brown to Soliton-Antisoliton Creation” in Structure and Dynamics of Heterogeneous Systems, edited by P. Entel & D.E. Wolf, World Scientific, Singapore (2000), pp. 274-93. 

 J. Loffler, H.B. Braun and W. Wagner, “Magnetic Correlations in Nanostructured Metals and an Ex- tended Random-Anisotropy Model”, J. Appl. Phys. 85, 5187 (1999).

 H.B. Braun and N. Fettes, “From Micromagnetics to Quantum Spin Chains : Quantization of Brea- thers”, J. Appl. Phys. 85, 5648 (1999). 

 H.B. Braun, “Nucleation in Ferromagnetic Nanowires — Magnetostatics and Topology”, J. Appl Phys. 85, 6172 (1999). 

 H.B. Braun, “Topological Excitations in Low Dimensional Magnets”, in Complementarity between Neutron and Synchrotron X-Ray Scattering, World Scientific, Singapore (1998), pp 129-162. 

 H.B. Braun, J. Kyriakidis, and D. Loss, “Macroscopic Quantum Tunneling of Ferromagnetic Domain Walls”, Phys. Rev. B. 56, 8129-8137 (1997). 

 H.B. Braun and D. Loss, “Chiral Quantum Spin Solitons”, J. Appl. Phys. 79, 6107 (1996). 

 ∗ H.B. Braun and D. Loss, “Berry’s Phase and Quantum Dynamics of Ferromagnetic Solitons”, Phys. Rev. B 53, 3237-3256 (1996). 

 *H.B. Braun and D. Loss, “Chirality Correlation of Spin Solitons : Bloch Walls, Spin 1/2-Chains and Holes in a 2D Antiferromagnetic Background”, Int. J. Mod. Phys. B 10, 219-234 (1996). 

 H.B. Braun and D. Loss, “Dissipation and Quantum Propagation of Bloch Walls”, Europhys. Lett. 31, 555-560 (1995). 

 H.B. Braun and D. Loss, “Macroscopic Quantum Coherence of Bloch Walls”, in “Quantum Tunne- ling in Magnetism” edited by L. Gunther and B. Barbara, NATO ASI Series, Kluwer, (1995). 

 ∗ H.B. Braun, “Statistical Mechanics of Nonuniform Magnetization Reversal”, Phys. Rev. B 50, 16501- 16521 (1994). 

 ∗ H.B. Braun, “Fluctuations and Instabilities of Ferromagnetic Domain Wall Pairs in an External Field”, Phys. Rev. B 50, 16485-16500 (1994). 

 H.B. Braun and H. N. Bertram, “Nonuniform Switching of Single-Domain Particles at Finite Tempe- ratures ”, J. Appl. Phys. 75, 4609-4616 (1994). 

 H.B. Braun and D. Loss, “Bloch States of a Bloch Wall”, J. Appl. Phys. 76, 6177-6179 (1994). 

 H.B. Braun, “Kramers’ theory, Broken Symmetries and Magnetization Reversal” (Invited), J. Appl. Phys. 76, 6310-6315 (1994). 

 H.B. Braun and O. Brodbeck, “Dynamic Confinement of Twisted Soliton Pairs in Biaxial Ferroma- gnets”, Phys. Rev. Lett. 70, 3335-3338 (1993). (IF 9) 

 ∗ H.B. Braun, “Thermally Activated Magnetization Reversal in Elongated Ferromagnetic Particles”, Phys. Rev. Lett. 71, 3557-3560 (1993). (IF 9) 

 J.S. Helman, H.B.Braun, J.S. Broz and W. Baltensperger, “General Solution of the Landau-Lifshitz- Gilbert Equations Linearized around a Bloch Wall”, Phys. Rev. B 43, 5908-5914 (1991). 

 H.B. Braun, “Nucleation Rates for Magnetization Reversal in Biaxial Ferromagnets”, IEEE Trans. Magn. 27, 4787-4789 (1991). 

 J.S. Broz, H.B. Braun, O. Brodbeck, W. Baltensperger and J.S. Helman, “Nucleation of Magnetization Reversal via Creation of Pairs of Bloch Walls”, Phys. Rev. Lett. 65, 787-790 (1990). (IF 9) 

 P. Talkner and H.B. Braun, ”Transition Rates of a Non-Markovian Brownian Particle in a Double Well Potential” J. Chem. Phys 88, 7537-7549 (1988).

 Theses : ‘Übergangsraten eines nicht-Markoffsch angeregten Prozesses im sym. Doppeltopfpotential”, Diploma Thesis, University of Basel, 1986. “Nucleation, Solitons and Breathers in Biaxial Ferromagnets”, Ph.D. Thesis, ETH Zurich, ETH Diss. No. 9619.