Surface oxides, carbides, and impurities on RF superconducting Nb and Nb3Sn: A comprehensive analysis

Kavli Affiliate: David A. Muller | First 5 Authors: Zeming Sun, Zhaslan Baraissov, Catherine A. Dukes, Darrah K. Dare, Thomas Oseroff | Summary: Surface structures on radio-frequency (RF) superconductors are crucially important in determining their interaction with the RF field. Here we investigate the surface compositions, structural profiles, and valence distributions of oxides, carbides, and […]


Continue.. Surface oxides, carbides, and impurities on RF superconducting Nb and Nb3Sn: A comprehensive analysis

Cross-view Action Recognition via Contrastive View-invariant Representation

Kavli Affiliate: Dan Luo | First 5 Authors: Yuexi Zhang, Dan Luo, Balaji Sundareshan, Octavia Camps, Mario Sznaier | Summary: Cross view action recognition (CVAR) seeks to recognize a human action when observed from a previously unseen viewpoint. This is a challenging problem since the appearance of an action changes significantly with the viewpoint. Applications […]


Continue.. Cross-view Action Recognition via Contrastive View-invariant Representation

Cross-view Action Recognition via Contrastive View-invariant Representation

Kavli Affiliate: Dan Luo | First 5 Authors: Yuexi Zhang, Dan Luo, Balaji Sundareshan, Octavia Camps, Mario Sznaier | Summary: Cross view action recognition (CVAR) seeks to recognize a human action when observed from a previously unseen viewpoint. This is a challenging problem since the appearance of an action changes significantly with the viewpoint. Applications […]


Continue.. Cross-view Action Recognition via Contrastive View-invariant Representation

Integer and fractional Chern insulators in twisted bilayer MoTe2

Kavli Affiliate: Jie Shan | First 5 Authors: Yihang Zeng, Zhengchao Xia, Kaifei Kang, Jiacheng Zhu, Patrick Knüppel | Summary: Chern insulators, which are the lattice analogs of the quantum Hall states, can potentially manifest high-temperature topological orders at zero magnetic field to enable next-generation topological quantum devices. To date, integer Chern insulators have been […]


Continue.. Integer and fractional Chern insulators in twisted bilayer MoTe2

Integer and fractional Chern insulators in twisted bilayer MoTe2

Kavli Affiliate: Jie Shan | First 5 Authors: Yihang Zeng, Zhengchao Xia, Kaifei Kang, Jiacheng Zhu, Patrick Knüppel | Summary: Chern insulators, which are the lattice analogs of the quantum Hall states, can potentially manifest high-temperature topological orders at zero magnetic field to enable next-generation topological quantum devices. To date, integer Chern insulators have been […]


Continue.. Integer and fractional Chern insulators in twisted bilayer MoTe2

High-resolution three-dimensional imaging of topological textures in single-diamond networks

Kavli Affiliate: Ulrich B. Wiesner | First 5 Authors: Dmitry Karpov, Kenza Djeghdi, Mirko Holler, S. Narjes Abdollahi, Karolina Godlewska | Summary: Highly periodic structures are often said to convey the beauty of nature. However, most material properties are strongly influenced by the defects they contain. On the mesoscopic scale, molecular self-assembly exemplifies this interplay; […]


Continue.. High-resolution three-dimensional imaging of topological textures in single-diamond networks

High-resolution three-dimensional imaging of topological textures in single-diamond networks

Kavli Affiliate: Ulrich B. Wiesner | First 5 Authors: Dmitry Karpov, Kenza Djeghdi, Mirko Holler, S. Narjes Abdollahi, Karolina Godlewska | Summary: Highly periodic structures are often said to convey the beauty of nature. However, most material properties are strongly influenced by the defects they contain. On the mesoscopic scale, molecular self-assembly exemplifies this interplay; […]


Continue.. High-resolution three-dimensional imaging of topological textures in single-diamond networks

Coherent control of the translational and point group symmetries of crystals with light

Kavli Affiliate: Nicole A. Benedek | First 5 Authors: Guru Khalsa, Jeffrey Z. Kaaret, Nicole A. Benedek, , | Summary: We use theory and first-principles calculations to explore mechanisms for control of the translational and point group symmetries of crystals in ultrafast optical experiments. We focus in particular on mechanisms that exploit anharmonic (biquadratic) lattice […]


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Non-linear optics at twist interfaces in h-BN/SiC heterostructures

Kavli Affiliate: Zhiting Tian | First 5 Authors: Abhijit Biswas, Rui Xu, Gustavo A. Alvarez, Jin Zhang, Joyce Christiansen-Salameh | Summary: Understanding the emergent electronic structure in twisted atomically thin layers has led to the exciting field of twistronics. However, practical applications of such systems are challenging since the specific angular correlations between the layers […]


Continue.. Non-linear optics at twist interfaces in h-BN/SiC heterostructures