Writing
Peer-reviewed papers, degree theses and essays, browsable by kind.
Full, continuously updated list on Google Scholar.
Peer-reviewed papers, degree theses and essays, browsable by kind.
Hameed, S., Kumar, A., Yu, C., Balan, A. P., Wang, X., Zhang, L., Mokrousov, Y., Kläui, M. Devices that read out magnetic state electrically normally need two magnetic electrodes with an insulator between them. This one has none: the magnetism sits in the insulating barrier itself, and the resistance change is set by the operating voltage.
Aditya Kumar, Aravind Puthirath Balan, Sadeed Hameed, Xinran Wang, Mathias Kläui. An invited overview of what is and is not yet understood about this magnetic 'memory' effect in stacks of atomically thin magnetic materials, and where the field needs to go next.
10.1016/j.newton.2026.100469Aditya Kumar, Sadeed Hameed, Thibaud Denneulin, Aravind Puthirath Balan, Joseph Vas, Kilian Leutner, Lei Gao, Olena Gomonay, Jairo Sinova, Rafal E. Dunin-Borkowski, Mathias Kläui. Shows that stacking two magnetic materials whose natural magnetic directions point at right angles to one another still produces a switchable magnetic 'memory' effect between them.
10.1002/smll.202506284analysis repositoryAravind Puthirath Balan, Aditya Kumar, Tanja Scholz, Zhongchong Lin, Aga Shahee, Shuai Fu, Thibaud Denneulin, Joseph Vas, András Kovács, Rafal E. Dunin-Borkowski, Hai I. Wang, Jinbo Yang, Bettina V. Lotsch, Ulrich Nowak, Mathias Kläui. A naturally forming oxide layer on one magnetic material can flip the direction of a magnetic 'memory' effect it induces in a neighbouring layer, a mechanism nobody had reported before.
10.1021/acsnano.3c13034analysis repositoryAravind Puthirath Balan, Aditya Kumar, Patrick Reiser, Joseph Vimal Vas, Thibaud Denneulin, Khoa Dang Lee, Tom G. Saunderson, Märta Tschudin, Clement Pellet-Mary, Debarghya Dutta, Carolin Schrader, Tanja Scholz, Jaco Geuchies, Shuai Fu, Hai Wang, Alberta Bonanni, Bettina V. Lotsch, Ulrich Nowak, Gerhard Jakob, Jacob Gayles, Andras Kovacs, Rafal E. Dunin-Borkowski, Patrick Maletinsky, Mathias Kläui. Explains why heating and cooling a stack of two magnetic materials changes how strongly one 'remembers' the magnetic orientation of the other, by directly imaging the magnetic domains at their shared interface.
10.1002/adma.202403685analysis repositoryChristin Schmitt, Adithya Rajan, Grischa Beneke, Aditya Kumar, Tobias Sparmann, Hendrik Meer, Beatrice Bednarz, Rafael Ramos, Miguel Angel Niño, Michael Foerster, Eiji Saitoh, Mathias Kläui. Used a synchrotron-based microscopy technique to show that electrically switching the magnetic state of an ultrathin antiferromagnetic oxide film involves two competing physical mechanisms, not just one.
10.1021/acs.nanolett.3c02890Pushpendra Gupta, Braj Bhusan Singh, Abhisek Mishra, Aditya Kumar, Anirban Sarkar, Markus Waschk, Subhankar Bedanta. Measured how efficiently a magnetic oxide film converts a spin signal into an electrical voltage, and how that efficiency changes with the microwave frequency used to drive it.
10.1142/S2010324723400192An ongoing PhD investigating the structural and magnetic nature of single-crystal layered magnetic materials, drawing on the exchange-bias and CrSBr tunnelling-magnetoresistance work carried out in the Kläui group. The thesis is not yet submitted or defended; a full public abstract will follow submission.
Investigated how a pure spin current generated by microwave excitation of a magnetic oxide can be injected into an organic semiconductor and detected electrically. Built a VNA based microwave measurement setup for ferromagnetic resosnace measurements (FMR) from alongside the thin-film growth and magnetic characterisation it needed. The thesis received the top grade, and the measurement setup went on to feed a co-authored 2024 publication.
A follow-up to the compression essay. The human world model was tuned for survival, and our most rigorous disciplines spend years teaching practitioners to override it. Where that makes a model's missing world model an advantage, and a practical rule for deciding which tasks to hand to one.
Natural language compresses sensory reality at a ratio of roughly a million to one, and the reader is the decompression engine. Where the numbers come from, the history of writing read as a compression story, and what the framing predicts about machines that learn from text alone.