The emergence of hybrid metal halides (HMH) materials, such as the archetypal CH3NH3PbBr3, provides an appealing material platform for solution-processed spintronic applications due to properties such as unprecedented large Rashba spin-splitting states and highly efficient spin-to-charge (StC) conversion efficiencies. Here we report the first study of StC conversion and spin relaxation time in MAPbBr3 single crystals at room temperature using a spin pumping approach. Microwave frequency and power dependence of StC responses are both consistent with the spin pumping model, from which an inverse Rashba–Edelstein effect coherence length of up to ∼30 picometer is obtained, highlighting a good StC conversion efficiency. The magnetic field angular dependence of StC is investigated and can be well-explained by the spin precession model under oblique magnetic field. A long spin relaxation time of up to ∼190 picoseconds is obtained, which can be attributed to the surface Rashba state formed at the MAPbBr3 interface. Our oblique Hanle effect by FMR-driven spin pumping technique provides a reliable and sensitive tool for measuring the spin relaxation time in various solution processed HMH single crystals.
Emerging Leaders 2020

JPhys Materials Emerging Leaders 2020
In keeping with the Journal of Physics Series' 50th anniversary celebratory initiative in 2017, JPhys Materials is pleased to bring together the best early-career researchers in the field and publish their exceptional work in an annual collection dedicated to 'Emerging leaders'.
An emerging leader is defined as a top researcher in their field who completed their PhD in 2009 or later (10 years excluding career breaks).
2020 JPhys Materials Early Career Award
On behalf of Editor-in-Chief Stephan Roche and the Senior Advisory Panel, we are delighted to announce that Dali Sun is the winner of the 2020 JPhys Materials Early Career Award, in recognition of his outstanding work on long spin lifetime in MAPbBr3 single crystals at room temperature.
We would like to thank everyone who submitted a paper to this year's collection, which demonstrates the exceptional work being carried by this generation of talented researchers. We are proud to champion early-career researchers in the journal and encourage readers to browse the full collection below.
Papers

Dali Sun
Dali Sun received his PhD in 2009 from the Institute of Physics, Chinese Academy of Science, Beijing, China. He did his postdoctoral research at Oak Ridge National Laboratory (Oak Ridge, TN, US) and the University of Utah (Salt Lake City, UT, US) from 2010 to 2014. He continued to work at the University of Utah as a research assistant professor from 2015 to 2016. In 2017, he joined the Department of Physics at the North Carolina State University (Raleigh, NC, US) as an assistant professor. His research focuses on spintronics and optoelectronics of organic semiconductors, novel magnetic thin films, and organic-inorganic hybrid perovskite materials.
Yuanyue Liu
Yuanyue Liu is currently an assistant professor at Texas Materials Institute and Department of Mechanical Engineering at University of Texas at Austin. He received B.S. degree from University of Science and Technology of China (USTC) in 2008, and Ph.D. from Rice University in 2014. He did postdoc studies at National Renewable Energy Laboratory (NREL) and California Institute of Technology, and then started independent career in Fall 2017. He has received a number of awards, including Chinese Government Award for Outstanding Students Abroad (2012), Franz and Frances Brotzen Award (Rice University, 2014), and Resnick Prize Postdoc Fellowship (Caltech, 2015).

Dr Andres Castellanos-Gomez
Dr. Andres Castellanos-Gomez is a Tenured Scientist in the Spanish National Research Council (Consejo Superior de Investigaciones Cientfícas, CSIC). He explores novel 2D materials and studies their mechanical, electrical and optical properties with special interest on the application of these materials in nanomechanical and optoelectronic devices. He is author of more than 110 articles in international peer review journals and 6 book chapters. He was awarded an ERC Starting Grant in 2017 and has been included in the Highly Cited Researchers 2018 list of Clarivate/WOS and selected as one of the Top Ten Spanish Talents of 2017 by the MIT Technology Reviews. He has been also recognized with the Young Researcher Award (experimental physics) of the Royal Physical Society of Spain (2016).

Dr Bartomeu Monserrat
Dr Bartomeu Monserrat is a group leader at the Cavendish Laboratory, where he holds a Winton Advanced Research Fellowship. His work focuses on the development of first principles quantum mechanical methods to study material properties at finite temperature, with a particular emphasis on excitations in semiconductors, topological order, superconductivity, and high pressure physics. His work has been internationally recognised with the 2018 Psi-K Volker Heine Young Investigator Award.
He holds a PhD from the University of Cambridge, for which he was awarded the 2014 CPG Thesis 2nd Prize by the UK Institute of Physics; and a MSci from Imperial College London, for which he was awarded the Abdus Salam Prize to the best physics graduate.

Alessio Zaccone
Alessio Zaccone, after undergraduate studies at Politecnico di Torino, obtained a PhD in Chemical Physics at ETH Zurich in 2010. He held academic positions including the Oppenheimer Research Fellowship in the Cavendish Laboratory at University of Cambridge, the Moessbauer Professorship in Physics at Technical University Munich, and a Lectureship in Statistical Physics at University of Cambridge. Currently he is an Associate Professor in the Department of Physics at University of Milan (Italy). In 2017 he has been listed by the ACS Industrial & Engineering Chemistry Journal as one of the 37 most influential researchers (with <12 years of independent career) worldwide for impact on chemical sciences. In 2019 he has been elected by the Academy of Science of Goettingen as the Gauss Professor for 2020 at the University of Goettingen. Since 2016 Alessio Zaccone is an established collaborator of the government of the USA and leads a research program on atomistic simulations of materials mechanics in collaboration with the US Army Research Laboratory. His research activities lie in the area of theoretical and computational modelling of structurally disordered atomic, molecular and soft materials, with particular emphasis on phononics, mechanics and their link with structure.

Domenico Di Sante
Domenico Di Sante received his Master's degree (2011) and PhD (2015) in Physics at the University of L'Aquila (Italy). After a brief post-doc at Consiglio Nazionale delle Ricerche (CNR-SPIN, Italy), he got an Academic Scientist (Akademisher Rat) position at the Institute for Theoretical Physics and Astrophysics of the University of W?rzburg (Germany). In late 2019, he started the german habilitation, and he is titular of master and PhD courses. He has also got in 2017 the Italian habilitation as an associate professor in theoretical condensed matter.
His main actual interests regard the physics of strong spin-orbit coupled and correlated electrons systems investigated employing density functional theory calculations and many-body techniques, such as the functional renormalization group and dynamical mean-field theory.

Chuan Liu
Chuan Liu received Ph.D. degree from Department of Physics in University of Cambridge, U.K. Then he moved to National Institute for Materials Science (NIMS, Japan) as a postdoc researcher and to Dongguk University (Seoul, South Korea) as an assistant professor. He is now a professor in Sun Yat-sen University (China). He has received Korean Information Display Society Gold Award and Best Career Award from Semiconductor Science and Technology of IOP Publishing. He is mainly interested in thin-film electronics with oxide and organic semiconductors, especially device physics, fabrication, and characterization of thin-film transistors and sensors or detectors.

Thomas Kirchartz
Thomas Kirchartz is a professor in the department of Electrical Engineering and Information Technology at the University Duisburg-Essen (since 2013). In addition, he is the head of the department of Analytics and Simulation and the group for Organic and Hybrid Solar Cells at the Research Centre J?lich (Institute for Energy and Climate Research). He holds a Dipl. Ing. Degree in Electrical Engineering from University of Stuttgart (2006) and a PhD from RWTH Aachen (2009). In addition, he spent three years at Imperial College London as a Junior Research Fellow (2010 - 2013) working with Jenny Nelson. His research focusses on the physics of solar cells with a special focus on solution processable solar cells. Examples for this class of solar cells are organic solar cells and perovskite solar cells. He is interested in a better understanding of recombination processes using various characterization methods (e.g. photoluminescence) and numerical modelling. In addition, his group works on further improving the open-circuit voltage of organic and perovskite solar cells.

Professor Yana Vaynzof
Professor Dr Yana Vaynzof is the Chair for Emerging Electronic Technologies at the Integrated Centre for Applied Physics and Photonic Materials and the Centre for Advancing Electronics Dresden at the Technical University of Dresden (Germany). She received a BSc in Electrical Engineering from the Technion - Israel Institute of Technology (Israel) in 2006 and a MSc. In Electrical Engineering from Princeton University (USA) in 2008. In 2011, she received a PhD in Physics from the University of Cambridge (UK). Prior to commencing her current position in 2019, Yana was a postdoctoral research associate at the Cavendish Laboratory, Cambridge (UK) and an assistant professor at Heidelberg University (Germany). Yana Vaynzof is the recipient of a number of fellowships and awards, including the ERC Starting Grant, Gordon Wu Fellowship, Henry Kressel Fellowship, Fulbright-Cottrell Award and the Walter Kalkhof-Rose Memorial Prize. Her research interests lie in the field of emerging photovoltaics focusing on the study of material and device physics of organic, quantum dot and perovskite solar cells by integrating device fabrication and characterisation with the application and development of advanced spectroscopic methods.

Deidre Cleland
Dr Deidre M Cleland is a DATA61 Research Scientist at the Commonwealth Scientific and Industrial Research Organisation (CSIRO) in Melbourne, Australia. Her research is focused on computational methods for quantum chemistry. She has a particular interest in developing efficient and user-friendly quantum chemistry software, for application to the larger molecules and materials of practical interest for chemical research. Dr Cleland completed her undergraduate studies at the University of Otago in New Zealand, and her PhD with Professor Ali Alavi at the University of Cambridge. She is passionate about promoting women in STEM, and is an alumna of the global leadership and collaboration initiative, Homeward Bound.
Electron correlation effects in isomers of C20

Kirsten Martens
Dr. Kirsten Martens received her PhD in 2009 at the University of Geneva in the field of out-of-equilibrium statistical physics and pattern formation. After working as a Swiss National Science Foundation and Marie-Curie postdoctoral fellow at the University Lyon 1, she joined the Interdisciplinary Physics Institute (LIPhy) in Grenoble as a CNRS permanent researcher. Her research interests include particle based, mesoscopic and meanfield modeling of the flow of disordered materials and dense active matter systems, with a specific interest in avalanche dynamics, shear localisation and the search of potential precursors in the yielding transition of amorphous materials.

Nicholas Bedford
Dr. Nicholas Bedford is a Lecturer in the School of Chemical Engineering at the University of New South Wales and member of the Particle and Catalysis Research Group, where he started his independent academic career in 2018. His research team is focused on broadly solving the "structure/function relationships" problem for nanoscale materials through novel synthetic capabilities and synchrotron radiation characterization methods. Prior to going UNSW, Dr Bedford as a research scientist for the US Air Force Research Laboratory, where he also held a National Research Council Postdoctoral Fellowship after graduating with his PhD in Material Science from the University of Cincinnati.

Andrea Caviglia
Andrea Caviglia is an associate professor at the Kavli Institute of Nanoscience at Delft University of Technology. He received his PhD from the University of Geneva in 2010 and was a postdoc at the Max Planck Institute for the Structure and Dynamics of Matter until 2012. He investigates electronic properties of quantum materials in and out of equilibrium. He was awarded the 2009 Swiss Physical Society Award for Applied Physics, 2011 Swiss National Science Foundation Fellowship, 2012 Swiss National Science Foundation Ambizione, 2015 European Research Council Starting Grant, 2016 Nicholas Kurti Science Prize, 2017 Netherlands Organisation for Scientific Research VIDI, 2019 European Research Council Proof of Concept Grant.