Shun Chi

Quasiparticle interference in LiFeAs: Signature of inelastic tunneling through spin fluctuations

Shun Chi, Carolina A. Marques, W. N. Hardy, Ruixing Liang et autres

Quasiparticle interference (QPI) is a powerful tool to characterize the symmetry of the superconducting order parameter in unconventional superconductors, by mapping the spatial dependence of elastic tunneling of electrons between the tip of a scanning tunneling microscope and a sample. Here, we …

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Magic angle of Sr 2 RuO 4 : Optimizing correlation-driven superconductivity

Jonas B. Profe, Luke C. Rhodes, Matteo Dürrnagel, Rebecca Bisset et autres

Understanding of unconventional superconductivity is crucial for engineering materials with specific order parameters or elevated superconducting transition temperatures. However, for many materials, the pairing mechanism and symmetry of the order parameter remain unclear: reliable and efficient methods of predicting the order parameter …

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Magic angle of Sr$_2$RuO$_4$: Optimizing correlation-driven superconductivity

Jonas B. Profe, Luke C. Rhodes, Matteo Dürrnagel, Rebecca Bisset et autres

Understanding of unconventional superconductivity is crucial for engineering materials with specific order parameters or elevated superconducting transition temperatures. However, for many materials, the pairing mechanism and symmetry of the order parameter remain unclear: reliable and efficient methods of predicting the order parameter …

Magic angle of Sr2RuO4 : Optimizing correlation-driven superconductivity

Jonas B. Profe, Luke C. Rhodes, Peter Wahl, Matteo Dürrnagel et autres

Three-dimensional electronic structure of LiFeAs

Ryan Day, MengXing Na, Manuel Zingl, Berend Zwartsenberg et autres

Despite its ubiquity in the characterization of the electronic structure of solids, the interpretation of angle-resolved photoemission spectroscopy measurements is by no means a trivial exercise. Here, the authors implement a combined experimental and computational methodology to exemplify this problem and its …

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The Three-Dimensional Electronic Structure of LiFeAs: Strong-coupling Superconductivity and Topology in the Iron Pnictides

Ryan Day, MengXing Na, Manuel Zingl, Berend Zwartsenberg et autres

Amongst the iron-based superconductors, LiFeAs is unrivalled in the simplicity of its crystal structure and phase diagram. However, our understanding of this canonical compound suffers from conflict between mutually incompatible descriptions of the material's electronic structure, as derived from contradictory interpretations of …

Structural electronic and magnetic properties of BaBiO3 single crystals

Oleksandr Foyevtsov, Shadi Balandeh, Shun Chi, G. A. Sawatzky

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Discovery of a strain-stabilized charge density wave in LiFeAs

Chi Ming Yim, Christopher Trainer, Rama K. P. Aluru, Shun Chi et autres

Ultra-long quasiparticle relaxation times in the superconducting state of FeSe

Graham Baker, James A. P. Day, Shun Chi, Ryan Day et autres

The Stability of Exfolicated FeSe Nanosheets During in-air Device Fabrication Processes

Rui Liang Yang, Weijun Luo, Shun Chi, D. A. Bonn et autres

We studied the stability and superconductivity of FeSe nanosheets during an in-air device fabrication process. Methods were developed to improve the exfoliation yield and to maintain the superconductivity of FeSe. Raman spectroscopy, atomic force microscopy, optical microscopy, and time-of-flight-secondary-ion-mass-spectroscopy measurements show that …

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Broadband microwave spectroscopy of FeSe

Graham Baker, James A. P. Day, Shun Chi, D. A. Bonn

Discovery of a strain-stabilised charge density wave in LiFeAs

Chi Ming Yim, Christopher Trainer, Ramakrishna Aluru, Shun Chi et autres

In many high temperature superconductors, small orthorhombic distortions of the lattice structure result in surprisingly large symmetry breaking of the electronic states and macroscopic properties, an effect often referred to as nematicity. This nematicity has been studied extensively on materials with an …