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K. Hopfer

2 papers

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papers

Publications (2)

cond-mat.str-el2023

RIXS observation of bond-directional nearest-neighbor excitations in the Kitaev material Na2​IrO3​

M. Magnaterra, K. Hopfer, Ch. J. Sahle +13

Spin-orbit coupling locks spin direction and spatial orientation and generates, in semi-classical magnets, a local spin easy-axis and associated ordering. Quantum spin-1/2's defy t…

cond-mat.str-el2019

Multiple Spin-Orbit Excitons and the Electronic Structure of I^±-RuCl3​

P. Warzanowski, N. Borgwardt, K. Hopfer +7

The honeycomb compound I^±-RuCl3​ is widely discussed as a proximate Kitaev spin-liquid material. This scenario builds on spin-orbit entangled j=1/2 moments arising for a $t…

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