Dr Devashibhai Adroja

I am a senior scientist at ISIS facility and responsible for MERLIN/HET spectrometers.

I am also a project scientist for the Advanced Magnets for Neutron Scattering project at ISIS.

My field of research is to investigate strongly correlated electron systems using neutron scattering and muon spin resonance techniques. The field of strongly correlated electron systems is an active area in condensed matter physics research recently and in spite of a huge amount of experimental and theoretical work, the magnetic properties of solids are by no means completely understood. My research is focused on the materials which are important to understand the fundamental physics as well as the development of new future thermoelectric device technology.  I am currently working on heavy fermion systems, new FeAs-based high temperature superconductors (HTSC), transition mental oxides, thermoelectric materials, low dimensional magnetism and magnetic-nanoparticles. The main focus on heavy fermion and FeAs-based-SC/HTSC is to understand commonality between these different systems, which may lead to a common origin of the superconductivity, and to investigate the role of quantum fluctuations on the origin of unconventional superconductivity and break down of standard Fermi-liquid theory in these materials. Many heavy fermion systems exhibit a huge value of thermoelectric power, which is important for thermoelectric device. On transition metal oxides systems the main focus is to probe low dimensional magnetic fluctuations using inelastic neutron scattering and muon spin rotation and directly test various theoretical models. Currently I am working on spin-chain and spin ladder systems.

*    I am a member of the editorial board for  the Open Condensed Matter Physics Journal

*    Advanced magnets for neutron scattering applications at ISIS (Jan 2006-Dec 2009) £2.1M.

*    Funding for Theoretical and Experimental Magnetism Meeting (Aug 2005-2009) £30.5 K

*    Funding for Theoretical and Experimental Magnetism Meeting from the COST-P16 programme 5K Euros

*    CMPC Funding for a visiting PhD student £10 K ( June 2009-2010)

*    Submitted an EPSRC  grant proposal on “Crystal growth and neutron scattering investigations of intermetallic superconductors and magnetic materials” in collaboration with Dr Geetha Balakrishnan from Warwick University.

Recent Publications

Review papers: 

Inelastic neutron scattering study of spin gap formation in heavy fermion compounds

D.T. Adroja,   K.A. McEwen_,  J.-G. Park, A.D. Hillier, N. Takeda, P.S. Riseborough and T. Takabatake 

J. Optoelectronics and Advanced Materials, 19, 1564 (2008)

Full Journal papers:

Spin Waves and Magnetic Exchange Interactions in CaFe₂As₂

Jun Zhao, D. T. Adroja, Dao-Xin Yao, R. Bewley, Shiliang Li, X. F. Wang, G. Wu, X. H. Chen, Jiangping Hu, and Pengcheng Dai

Nature Physics, 5, 555, (2009)

Magnetocrystalline Anisotropy and Crystal Fields in the Weak-Ferromagnet Ce₄Ni₃Pb₄

J. Phys. Soci. Japan, 78. 024701 (2009).

Crystal electric field excitations in ferromagnetic CeTX compounds

B.M. Sondezi-Mhlungu, D.T.Adroja, A.M.Strydom, S.Paschen, E.A.Goremychkin

Physica B (2009) in press

Crystalline Electric Field as a Probe for Long-Range Antiferromagnetic Order and Superconducting State of CeFeAsO_1-xF_x

Songxue Chi, D. T. Adroja, T. Guidi, R. Bewley, Shiliang Li, Jun Zhao, J.W. Lynn, C. M. Brown, Y. Qiu, G. F. Chen, J. L. Lou, N. L. Wang, and Pengcheng Dai

Phys. Rev. Lett. 101, 217002 (2008)

mSR study of non-Fermi-liquid behaviour near the ferromagnetic quantum critical point in CePd_0.15Rh_0.85

D.T.Adroja, A.D. Hillier, J.-G. Park, W. Kockelmann, K.A. McEwen, B.D. Rainford et al

Phys.Rev. B78, 014412 (2008)