Alessandro Bombardi


Alessandro Bombardi is the Principal Beamline Scientist for I16. He joined Diamond in 2004 and participated in the design, construction and commissioning of I16. His daily activities range from supporting users,supervising post-docs and students, developing and maintaining beamline equipment, software, and documentation, and performing beamline research. In 2008 his scientific career abroad was recognised with the prize “Napoletani eccellenti all’estero” (Excellent Neapolitan abroad) by the “Associazione Industriali di Napoli” (Neapolitan industrial association). The prize was delivered by the then Italian prime minister.

Tel: +44 (0) 1235 778226

Techniques and Disciplines

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  1. Research Expertise
  2. Biography
  3. Publications
  4. Collaborations
Research Expertise -

Current Research Interests

In the last years the core of my research was mostly on multiferroics; materials where two orderings coexist and interact. The most studied instance that could lead to functional application is the presence of magnetism and ferroelectricity.
The complex X-ray magnetic scattering cross section, together with the tunability to a specific chemical element, and the high reciprocal and direct space resolution have proved ideal to study such systems. Recently the focus of the scientific community has been on one side to identify new possible coupling mechanisms between the two order parameters, and on the other side to achieve a better understanding/control of the magnetic and magneto-electric domains in multiferroic systems, as the control of the domains is the key to achieve devices. I16 based research contributed to both aspects.
I regularly propose and carry out experiments on other beamlines at Diamond. I keep a lively neutron based research activity at ISIS, the ILL. 
Despite my research activity is not solely based on I16, I always pay attention to the possibilities offered by I16 to explore the particular scientific case I am interested in and also to the possible technical developments that a scientific case can bring to the beamline. An example is my recent activities on 4d based frustrated magnet where, beside the interest in the materials, a side effect is the extension of the energy range available on the beamline to energy previously not on offer.
Biography - +
I am an Italian physicist, born in Napoli, where I obtained my master degree. I won an Euratom grant to continue my study in France and I had the chance of profiting of the invaluable expertise of Prof. Dr. G.H. Lander, my supervisor at the time, and of working in close contact with world renowned neutron scattering experts at the ILL and at the MDN-CEA laboratory directed by Dr. L.P. Regnault.
After finishing my PhD I worked briefly as German co-responsible of the CRG IN22 based at the ILL in Grenoble. In September 2001 I moved to the ESRF as post-doctoral fellow on the former ID20 beamline dedicated to resonant x-ray magnetic scattering. In this period I changed my research activity from the study of actinides to magnetically frustrated transition metal oxides and I worked in close collaboration with Dr. L. Paolasini, Dr. C. Detlefs and Dr. F. de Bergevin, the father of x-ray magnetic scattering, whose help was invaluable. In that period I studied the magnetic properties of quasi bi-dimensional magnetically frustrated systems like Li2V2SiO4 (A.Bombardi et al, Phys. Rev. Lett. 93, 027202, 2004) and strongly correlated electron systems like V2O3 (S. Di Matteo et al, Phys. Rev. Lett. 91, 257402, 2003). I have been working at Diamond since 2004 where I contributed to design, build, and commission the I16 material and magnetism beamline.
Publications - +

Recent selected publications

  • Negative Thermal Expansion in Hybrid Improper Ferroelectric Ruddlesden-Popper Perovskites by “Symmetry Trapping”, M. S. Senn, A. Bombardi, C. A. Murray, C. Vecchini, A. Scherillo, X. Luo, and S. W. Cheong accepted for publication in Phys. Rev. Lett.
  • Unconventional magnetic order on the hyperhoneycomb Kitaev lattice in β−Li2IrO3: Full solution via magnetic resonant x-ray diffraction, A. Biffin, R. D. Johnson, Sungkyun Choi, F. Freund, S. Manni, A. Bombardi, P. Manuel, P. Gegenwart, and R. Coldea - Phys. Rev. B 90, 205116 – Published 10 November 2014
  • Non-coplanar and counter-rotating incommensurate magnetic order stabilized by Kitaev interactions in γ-Li2IrO3, A. Biffin, R.D. Johnson, I. Kimchi, R. Morris, A. Bombardi, J.G. Analytis, A. Vishwanath, R. Coldea –Phys. Rev. Lett.  113, 197201  - Published: 7 November 2014
  • Charge density wave fluctuations in La2−xSrxCuO4 and their competition with superconductivity, T. P. Croft, C. Lester, M. S. Senn, A. Bombardi, and S. M. Hayden - Phys. Rev. B 89, 224513 – Published 19 June 2014
  • Magnetically induced femtoscale strain modulations in HoMn2O5, C. Vecchini, A. Bombardi, L. C. Chapon, G. Beutier, P. G. Radaelli, S. Park, and S.-W. Cheong, Phys. Rev. B 89, 125114 – Published 17 March 2014
  • Exchange interactions in Ca3Co2O6 probed locally by NMR-G. Allodi, P. Santini, S. Carretta, S. Agrestini, C. Mazzoli, A. Bombardi, M. R. Lees, and R. De Renzi, Phys. Rev. B 89, 104401 – Published 3 March 2014
  • Dimerization-Induced Cross-Layer Quasi-Two-Dimensionality in Metallic IrTe2, G. L. Pascut, K. Haule, M. J. Gutmann, S. A. Barnett, A. Bombardi, S. Artyukhin, T. Birol, D. Vanderbilt, J. J. Yang, S.-W. Cheong, and V. Kiryukhin, Phys. Rev. Lett. 112, 086402 – Published 26 February 2014
  • X-Ray Imaging and Multiferroic Coupling of Cycloidal Magnetic Domains in Ferroelectric Monodomain BiFeO3, R. D. Johnson, P. Barone, A. Bombardi, R. J. Bean, S. Picozzi, P. G. Radaelli, Y. S. Oh, S.-W. Cheong, and L. C. Chapon, Phys. Rev. Lett. 110, 217206 – Published 22 May 2013
  • Giant Tunability of Ferroelectric Polarization in GdMn2O5, N. Lee, C. Vecchini, Y. J. Choi, L. C. Chapon, A. Bombardi, P. G. Radaelli, and S-W. Cheong, Phys. Rev. Lett. 110, 137203 – Published 26 March 2013
  • REXS contribution to electronic ordering investigation in solids, Beale, T. A. W.; Beutier, G.; Bland, S. R.; et al. EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS Volume: 208   Issue: 1   Pages: 89-98   Published: JUN 2012
  • Cu3Nb2O8: A Multiferroic with Chiral Coupling to the Crystal Structure, R. D. Johnson, Sunil Nair, L. C. Chapon, A. Bombardi, C. Vecchini, D. Prabhakaran, A. T. Boothroyd, and P. G. Radaelli, Phys. Rev. Lett. 107, 137205 – Published 23 September 2011
  • Slow Magnetic Order-Order Transition in the Spin Chain Antiferromagnet Ca3Co2O6, S. Agrestini, C. L. Fleck, L. C. Chapon, C. Mazzoli, A. Bombardi, M. R. Lees, and O. A. Petrenko, Phys. Rev. Lett. 106, 197204 – Published 13 May 2011
  • Direct Observation of Charge Order in Triangular Metallic AgNiO2 by Single-Crystal Resonant X-Ray Scattering, G. L. Pascut, R. Coldea, P. G. Radaelli, A. Bombardi, G. Beutier, I. I. Mazin, M. D. Johannes, and M. Jansen, Phys. Rev. Lett. 106, 157206 – Published 13 April 2011
  • Helical spin waves, magnetic order, and fluctuations in the langasite compound Ba3NbFe3Si2O14, C. Stock, L. C. Chapon, A. Schneidewind, Y. Su, P. G. Radaelli, D. F. McMorrow, A. Bombardi, N. Lee, and S.-W. Cheong, Phys. Rev. B 83, 104426 – Published 30 March 2011
Collaborations - +
Prof. P.G. Radaelli
and his group at the Clarendon Laboratory- Oxford university
In particular regarding x-ray study of functional materials and student projects
Dr. L.C. Chapon
ILL – Grenoble -France
Neutron and x-ray magnetic scattering in functional materials and frustrated magnets
Prof. S-W Cheong
Director, Rutgers Center for Emergent Materials 
Neutron and x-ray magnetic scattering in functional materials and frustrated magnets
Prof. Hans-Conrad zur Loye
Associate Dean for Research
David W Robinson Palmetto Professor, University of South Carolina
Growth of 4d and 5d based frustrated magnets for x-ray magnetic scattering experiment
Prof. R.G.M. Caciuffo
Head of the Actinide Research Unit, JRC's Institute for Transuranium Elements
X-ray study of actinides
Dr. C. Mazzoli
Brookhaven National Laboratory
Technical development and scientific collaborations on frustrated magnets and functional materials
Former I16 personnel with whom I maintain collaborative projects:
Dr. G. Beutier
CNRS Grenoble
mostly XPCS on actinides
Dr. C. Vecchini
NPL London
Functional Materials
Dr. M.R. Senn
Chemistry Department of the University of Oxford
X-ray study of functional materials

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