Dr Dharmalingam Prabhakaran: Publications

A resonant valence bond spin liquid in the dilute limit of doped frustrated Mott insulators

Nature Physics Springer Nature (2025) 1-6

Authors:

Cecilie Glittum, Antonio Štrkalj, Dharmalingam Prabhakaran, Paul A Goddard, Cristian D Batista, Claudio Castelnovo

Circular dichroism in resonant inelastic x-ray scattering from birefringence in CuO

Physical Review Research American Physical Society (APS) 7:2 (2025) l022047

Authors:

Abhishek Nag, Gérard Sylvester Perren, Hiroki Ueda, AT Boothroyd, D Prabhakaran, M García-Fernández, S Agrestini, Ke-Jin Zhou, Urs Staub

Magnetic excitations and exchange parameters of the nickel-chain compound PbMn2Ni6Te3O18: Neutron scattering and density functional theory studies

Physical Review B American Physical Society (APS) 111:18 (2025) 184432

Authors:

S Uthayakumar, DT Adroja, Amit Pokhriyal, AK Bera, Haranath Ghosh, Tatiana Gudi, Manh Duc Le, Christian Balz, RA Ewings, Minal Gupta, PR Sagdeo, D Prabhakaran, JP Goff

Electronic structure of Bi2Ir2O7 probed by resonant inelastic x-ray scattering at the oxygen K edge: Metallicity, hybridization, and electronic correlations

Physical Review B American Physical Society (APS) 111:15 (2025) 155106

Authors:

P Olalde-Velasco, Y Huang, J Pelliciari, J Miyawaki, A Uldry, D Prabhakaran, B Delley, Y Harada, AT Boothroyd, HM Rønnow, DF McMorrow, T Schmitt

Observation of an interfacial magnon-electron drag in a pyrochlore ferromagnet–heavy metal heterostructure

Physical Review B: Condensed Matter and Materials Physics American Physical Society 111:5 (2025) 054435

Authors:

Avirup De, Dharmalingam Prabhakaran, Sunil Nair

Abstract:

We report on how the deposition of a nonmagnetic metal on the surface of a ferromagnetic insulator can provide a sensitive, albeit indirect, means of measuring the magnon Hall effect. This is inferred from the thermoelectric potential that develops across the metal layer as a consequence of the transverse thermal Hall gradient. Moreover, a manifestation of magnon surface states is observed via the drag which the surface spin currents of the ferromagnet impose on the conduction electrons of the adjacent metallic layer. This electron-magnon interaction operates across the interface, and the polarity of the resultant drag voltage is determined by the spin Nernst angle of the metal layer.

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