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Towards a Practical Resistance Standard

Quantum anomalous Hall effect with a permanent magnet defines a quantum resistance standard Authors: Yuma Okazaki, Takehiko Oe, Minoru Kawamura, Ryutaro Yoshimi, Shuji Nakamura, Shintaro Takada, Masataka Mogi, Kei S. Takahashi, Atsushi Tsukazaki, Masashi Kawasaki, Yoshinori Tokura, and Nobu-Hisa Kaneko Nature Physics 18, 25-29 (2022); DOI: 10.1038/s41567-021-01424-8 Recommended with a commentary by Joe Checkelsky, Massachusetts […]

Flow of transport coefficients in a film that shows the quantum anomalous Hall effect

Trajectory of Anomalous Hall Effect toward the Quantized State in a Ferromagnetic Topological Insulator Authors: J. G. Checkelsky, B. Yoshimi, K. S. Takahashi, Y. Kozuka, J. Falson, M. Kawasaki, and Y. Tokura arXiv: 1406.7450 Recommended with a commentary by Bertrand I. Halperin, Harvard University |View Commentary| DOI: 10.36471/JCCM_August_2014_02

Superconductivity in a doped topological insulator

1. Superconductivity in CuxBi2Se3 and its implication for pairing in the undoped topological insulator Authors: Y.S. Hor, A.J. Williams, J.G. Checkelsky, P. Roushan, J. Seo, Q. Hu, H.W. Zandbergen, A. Yazdani, N.P. Ong and R.J. Cava, arXiv:0909.2890, Phys. Rev. Lett. 104, 057001 (2010). 2. Observation of unconventional band topology in a superconducting doped topological insulator, […]

The n = 0 Landau level in graphene: Unusual properties in recent experiments

1. The zero-energy state in graphene in a high magnetic field Authors: Joseph G. Checkelsky, Lu Li, N. P. Ong, Phys. Rev. Lett. 100, 206801 (2008) 2. Divergent resistance at the Dirac point in graphene: Evidence for a transition in a high magnetic field Authors: Joseph G. Checkelsky, Lu Li, N. P. Ong, […]

Bismuth in strong magnetic fields

1. Signatures of Electron Fractionalization in Ultraquantum Bismuth Authors:  K. Behnia, L. Balicas and Y. Kopelevich, arXiv:0802.1993, Science 317, 1729 (2007). 2. Phase Transitions of Dirac Electrons in Bismuth Authors: L. Li, J.G. Checkelsky, Y.S. Uher, A.F. Hebard, R.J. Cava and N.P. Ong, Science 321, 547 (2008). Recommended with a commentary by Catherine Kallin, McMaster […]

Iron Pnictides research coming of age

1. Specific heat Measurements: “Fully gapped superconducting state based on a high normal state quasiparticle density of states in Ba0.6 K0.4 Fe2 As2 single crystals,” G. Mu, H. Luo, Z. Wang, L. Shan, C. Ren and H.H. Wen. arXiv:0808.2941. 2. ARPES Measurements:“Observation of Fermi surface-dependent nodeless superconduct- ing gaps in Ba0.6 K0.4 Fe2 As2 ,” […]

Organizers, Advisory Committee, and Correspondents in the last two years

Organizers: Alexander GrosbergNew York University Chandra M. Varma, Chief organizerEmeritus, University of California, Riverside Advisory Committee: Paul Chaikin, NYU Steven Girvin, Yale University Andrew Millis, Columbia University Correspondents in the last two years: Anton Akhmerov, Delft University of Technology | View Contributions | Jason Alicea, California Institute of Technology | View Contributions | Ehud Altman, […]