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Scientists in Brookhaven's Condensed Matter Physics & Materials Science Department study basic, theoretical and applied aspects of materials, their utilization, and their electronic, physical, mechanical, and chemical properties in relation to their structure. 

The field of Condensed Matter Physics and Materials Science integrates the knowledge and tools of chemistry and physics with the principles of engineering to understand and optimize the behavior of materials, as well as to create new and improved materials to help fulfill the missions of the Department of Energy.

  1. OCT

    24

    Thursday

    Condensed-Matter Physics & Materials Science Seminar

    "Engineering magnetism with light with the novel photovoltaic perovskite CH3NH3PbI3"

    Presented by László Forró, Ecole Polytechnique Fédérale de Lausanne, Switzerland

    1:30 pm, ISB Bldg. 734 Conf. Rm. 201 (upstairs)

    Thursday, October 24, 2019, 1:30 pm

    Hosted by: Cedomir Petrovic

    The demand for ever-increasing density of information storage and speed of manipulation boosts an intense search for new magnetic materials and novel ways of controlling the magnetic bit. Here, we report the synthesis of a ferromagnetic photovoltaic CH3NH3(Mn:Pb)I3 material in which the photo-excited electrons rapidly melt the local magnetic order through the Ruderman–Kittel–Kasuya–Yosida interactions without heating up the spin system (1). Similar effect was observed in La1-xSrxMnO3/CH3NH3PbI3 heterostructure in which Tc can be tuned by x (2). The observed optical melting of magnetism could be of practical importance, for example, in a magnetic thin film of a hard drive, where a small magnetic writing field could change the magnetic bit. Our method needs only a low-power visible light source, providing isothermal switching, and a small magnetic guide-field to overcompensate the stray field of neighboring bits. Acknowledgment: The work has been performed in collaboration with B. Náfrádi, E. Horváth, A, Arakcheeva, P. Szirmai, M. Spina, H. Lee, O.V. Yazyev, D. Chernyshov, and many others. The research was partially supported by the ERC Advanced Grant (PICOPROP#670918). Reference : 1. Nafradi et al, Nature Communications, 7, 13406, (2016) 2. Nafradi et al, submitted to PNAS

Condensed Matter Theory

Conducts basic research over a wide swath of theoretical physics, ranging from strongly correlated electrons to first principle electronic structure theory.  

Neutron Scattering

Studies the role of antiferromagnetism in high-temperature superconductors.  The interaction of charge carriers with magnetic moments is of critical importance but remains a challenge to understand. .

X-Ray Scattering

Carries out basic studies of the structural, electronic and magnetic properties of condensed matter systems using synchrotron-based x-ray scattering techniques. .

comscope logo

The Center for Computational Material Spectroscopy and Design develops, advances, and shares a powerful and user-friendly software suite called Comsuite to accelerate the discovery, analysis, and design of functional strongly correlated materials—the basis for next generation technologies.

Electron Microscopy and Nanostructure

Utilizes advanced electron microscopy techniques to study nanoscale structure and defects that determine the utility of functional materials, such as superconductors, multiferroics, and other energy related systems including thermoelectrics, photovoltaics, and batteries.

Oxide Molecular Beam Epitaxy

Addresses key open questions in HTS physics such as the dimensionality of the HTS phenomenon, the spin and charge of free carriers, the nature of the superconducting transition, the role of charge stripes (if any) in the HTS state, the nature of the overdoped metallic state, and more.

Spectroscopic Imaging

Span a wide range of quantum matter systems, including superconductors, superfluids, supersolids, electronic liquid crystals, topological insulators superconductors & superfluids, heavy fermions, and spin liquids. Throughout, the focus is on development of innovative techniques and approaches to each problem.

Advanced Energy Materials

Studies both the microscopic and macroscopic properties of complex and nano-structured materials with a view to understanding and developing their application in different energy related technologies

Electron Spectroscopy

Explores the electronic structure and electrodynamics of topological insulators and strongly correlated electron systems, with particular attention to emergent phenomena, such as superconductivity and magnetism, using angle-resolved photoemission (ARPES) and optical spectroscopy.

The Condensed Matter Physics and Materials Science Department is part of Brookhaven National Laboratory's Energy Sciences Directorate.