Negative Magnetoresistance in Dirac Semimetal Cd3As2
作者： Hui Li , Hongtao He , Hai-Zhou Lu , Huachen Zhang , Hongchao Liu
DOI: 10.1038/NCOMMS10301
关键词: Materials science 、 Dirac (software) 、 Condensed matter physics 、 Semimetal 、 Magnetoresistance 、 Electric field 、 Chiral anomaly 、 Magnetic field 、 Perpendicular 、 Charge-carrier density
摘要: A large negative magnetoresistance (NMR) is anticipated in topological semimetals parallel magnetic fields, demonstrating the chiral anomaly, a long-sought high-energy-physics effect, solid-state systems. Recent experiments reveal that Dirac semimetal Cd3As2 has record-high mobility and positive linear perpendicular fields. However, NMR not yet been unveiled. Here we report observation of microribbons fields up to 66% at 50 K visible room temperatures. The sensitive angle between electrical robust against temperature dependent on carrier density. results from low densities our samples, ranging 3.0 × 10(17) cm(-3) 300 K 2.2 10(16) cm(-3) below 50 K. We therefore attribute observed anomaly. In 1,670% 14 T 2 K also observed.
nature.com
arxiv.org
harvard.edu
core.ac.uk
cyberleninka.org
hku.hk
128.84.21.199参考文章(60)
Jørgen Lykke Olsen, Electron Transport in Metals ,(1962)
Tong Guan, Chaojing Lin, Chongli Yang, Youguo Shi, Cong Ren, Yongqing Li, Hongming Weng, Xi Dai, Zhong Fang, Shishen Yan, Peng Xiong, Evidence for Half-Metallicity in n-type HgCr2Se4. Physical Review Letters. ,vol. 115, pp. 087002- 087002 ,(2015) , 10.1103/PHYSREVLETT.115.087002
E. V. Gorbar, V. A. Miransky, I. A. Shovkovy, Chiral anomaly, dimensional reduction, and magnetoresistivity of Weyl and Dirac semimetals Physical Review B. ,vol. 89, pp. 085126- ,(2014) , 10.1103/PHYSREVB.89.085126
Grigory E. Volovik, The Universe in a Helium Droplet ,(2003)
Heon-Jung Kim, Ki-Seok Kim, J.-F. Wang, M. Sasaki, N. Satoh, A. Ohnishi, M. Kitaura, M. Yang, L. Li, Dirac versus Weyl fermions in topological insulators: Adler-Bell-Jackiw anomaly in transport phenomena. Physical Review Letters. ,vol. 111, pp. 246603- ,(2013) , 10.1103/PHYSREVLETT.111.246603
Ashvin Vishwanath, Ashvin Vishwanath, Sergey Y. Savrasov, Sergey Y. Savrasov, Xiangang Wan, Ari M. Turner, Topological semimetal and Fermi-arc surface states in the electronic structure of pyrochlore iridates Physical Review B. ,vol. 83, pp. 205101- ,(2011) , 10.1103/PHYSREVB.83.205101
Gang Xu, Hongming Weng, Zhijun Wang, Xi Dai, Zhong Fang, Chern Semimetal and the Quantized Anomalous Hall Effect in HgCr 2 Se 4 Physical Review Letters. ,vol. 107, pp. 186806- ,(2011) , 10.1103/PHYSREVLETT.107.186806
Junya Feng, Yuan Pang, Desheng Wu, Zhijun Wang, Hongming Weng, Jianqi Li, Xi Dai, Zhong Fang, Youguo Shi, Li Lu, Large linear magnetoresistance in Dirac semimetal Cd 3 As 2 with Fermi surfaces close to the Dirac points Physical Review B. ,vol. 92, pp. 081306- ,(2015) , 10.1103/PHYSREVB.92.081306
Qiang Li, Dmitri E. Kharzeev, Cheng Zhang, Yuan Huang, I. Pletikosić, A. V. Fedorov, R. D. Zhong, J. A. Schneeloch, G. D. Gu, T. Valla, Chiral magnetic effect in ZrTe 5 Nature Physics. ,vol. 12, pp. 550- 554 ,(2016) , 10.1038/NPHYS3648
Shaffique Adam, Mirco Milletari, Navneeth Ramakrishnan, Magnetoresistance in 3D Weyl Semimetals arXiv: Mesoscale and Nanoscale Physics. ,(2015)