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Article
Open AccessRole of defects in determining the magnetic ground state of ytterbium titanate
Pyrochlore systems are ideally suited to the exploration of geometrical frustration in three dimensions, and their rich phenomenology encompasses topological order and fractional excitations. Classical spin ic...
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Article
Open AccessIn situ strain tuning of the metal-insulator-transition of Ca2RuO4 in angle-resolved photoemission experiments
Pressure plays a key role in the study of quantum materials. Its application in angle resolved photoemission (ARPES) studies, however, has so far been limited. Here, we report the evolution of the k-space electro...
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Article
Open AccessDiffusion mechanism in the sodium-ion battery material sodium cobaltate
High performance batteries based on the movement of Li ions in Li x CoO2 have made possible a revolution in mobile electronic technology, from laptops to mobile phones. However, ...
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Article
Patterning of sodium ions and the control of electrons in sodium cobaltate
The remarkable electronic and thermal properties of sodium cobaltate have made it a focus of much attention: it becomes superconducting when water molecules are interleaved between the cobalt oxide sheets, it ...