Weyl semimetal phase in the non-centrosymmetric compound TaAs

Nature Physics Springer Nature 11:9 (2015) 728-732

Authors:

LX Yang, ZK Liu, Y Sun, H Peng, HF Yang, T Zhang, B Zhou, Y Zhang, YF Guo, M Rahn, D Prabhakaran, Z Hussain, S-K Mo, C Felser, B Yan, YL Chen

Extremely large magnetoresistance and ultrahigh mobility in the topological Weyl semimetal candidate NbP

Nature Physics Springer Nature 11:8 (2015) 645-649

Authors:

Chandra Shekhar, Ajaya K Nayak, Yan Sun, Marcus Schmidt, Michael Nicklas, Inge Leermakers, Uli Zeitler, Yurii Skourski, Jochen Wosnitza, Zhongkai Liu, Yulin Chen, Walter Schnelle, Horst Borrmann, Yuri Grin, Claudia Felser, Binghai Yan

van Hove Singularity Enhanced Photochemical Reactivity of Twisted Bilayer Graphene.

Nano letters 15:8 (2015) 5585-5589

Authors:

Lei Liao, Huan Wang, Han Peng, Jianbo Yin, Ai Leen Koh, Yulin Chen, Qin Xie, Hailin Peng, Zhongfan Liu

Abstract:

Twisted bilayer graphene (tBLG) exhibits van Hove singularities (VHSs) in the density of states that can be tuned by changing the twist angle (θ), sparking various novel physical phenomena. Much effort has been devoted to investigate the θ-dependent physical properties of tBLG. Yet, the chemical properties of tBLG with VHSs, especially the chemical reactivity, remain unexplored. Here we report the first systematic study on the chemistry of tBLG through the photochemical reaction between graphene and benzoyl peroxide. Twisted bilayer graphene exhibits θ-dependent reactivity, and remarkably enhanced reactivity is obtained when the energy of incident laser matches with the energy interval of the VHSs of tBLG. This work provides an insight on the chemistry of tBLG, and the successful enhancement of chemical reactivity derived from VHS is highly beneficial for the controllable chemical modification of tBLG as well as the development of tBLG based devices.

Publisher's Note: Emergence of the nematic electronic state in FeSe [Phys. Rev. B 91, 155106 (2015)]

Physical Review B American Physical Society (APS) 91:19 (2015) 199905

Authors:

MD Watson, TK Kim, AA Haghighirad, NR Davies, A McCollam, A Narayanan, SF Blake, YL Chen, S Ghannadzadeh, AJ Schofield, M Hoesch, C Meingast, T Wolf, AI Coldea

Emergence of the nematic electronic state in FeSe

Physical Review B American Physical Society (APS) 91:15 (2015) 155106

Authors:

MD Watson, TK Kim, AA Haghighirad, NR Davies, A McCollam, A Narayanan, SF Blake, YL Chen, S Ghannadzadeh, AJ Schofield, M Hoesch, C Meingast, T Wolf, AI Coldea