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Towards flat band superconductivity

Evidence for Dirac flat band superconductivity enabled by quantum geometry Authors: Haidong Tian, Xueshi Gao, Yuxin Zhang, Shi Che, Tianyi Xu, Patrick Cheung, Kenji Watanabe, Takashi Taniguchi, Mohit Randeria, Fan Zhang, Chun Ning Lau, and Marc W. Bockrath Nature 614, 440 (2023); DOI: 10.1038/s41586-022-05576-2 arXiv:2112.13401 Recommended with a commentary by Carlo Beenakker , Leiden University […]

Anomalous quantum anomalous Hall effect

1. Experimental signature of the parity anomaly in a semi-magnetic topological insulator Authors: M. Mogi, Y. Okamura, M. Kawamura, R. Yoshimi, K. Yasuda, A. Tsukazaki, K. S. Takahashi, T. Morimoto, N. Nagaosa, M. Kawasaki, Y. Takahashi, and Y. Tokura Nature Physics 18, 390 (2022); DOI: 10.1038/s41567-021-01490-y arXiv:2105.04127 2. Half-quantized Hall effect and power law decay […]

How to measure the Euler characteristic of the Fermi sea

Quantized Nonlinear Conductance in Ballistic Metals Authors: C. L. Kane arXiv:2108.05870 Recommended with a commentary by Carlo Beenakker, Instituut-Lorentz, Leiden University |View Commentary (pdf)| This commentary may be cited as: DOI: 10.36471/JCCM_October_2021_02 https://doi.org/10.36471/JCCM_October_2021_02

Bogoliubov Fermi surface revealed

Discovery of segmented Fermi surface induced by Cooper pair momentum Authors: Zhen Zhu, Michał Papaj, Xiao-Ang Nie, Hao-Ke Xu, Yi-Sheng Gu, Xu Yang, Dandan Guan, Shiyong Wang, Yaoyi Li, Canhua Liu, Jianlin Luo, Zhu-An Xu, Hao Zheng, Liang Fu, and Jin-Feng Jia arXiv:2010.02216 Recommended with a commentary by Carlo Beenakker, Instituut-Lorentz, Leiden University |View Commentary […]

Hidden landscape of an Anderson insulator

Computing spectra without solving eigenvalue problems Authors: Douglas N. Arnold, Guy David, Marcel Filoche, David Jerison, and Svitlana Mayboroda SIAM J. Sci. Comput. 41, B69 (2019); DOI: 10.1137/17M1156721 arXiv:1711.04888 Recommended with a commentary by Carlo Beenakker, Leiden University |View Commentary (pdf)| DOI: 10.36471/JCCM_August_2019_01https://doi.org/10.36471/JCCM_August_2019_01

Mystery solved of the sawtooth Josephson effect in bismuth

1. Ballistic edge states in bismuth nanowires revealed by SQUID interferometry Authors: Anil Murani, Alik Kasumov, Shamashis Sengupta, Yu A. Kasumov, V. T. Volkov, I. I. Khodos, F. Brisset, Raphaëlle Delagrange, Alexei Chepelianskii, Richard Deblock, Hélène Bouchiat, and Sophie Guéron Nature Communications 8, 15941 (2017) 2. Higher-order topology in bismuth Authors: Frank Schindler, Zhijun Wang, […]

Angels & Demons: Majorana & Dirac fermions in a quantum Hall edge channel

1. A mechanism of e2/2h conductance plateau without 1D chiral Majorana fermions Authors: Wenjie Ji and Xiao-Gang Wen arXiv:1708.06214 2. Disorder-induced half-integer quantized conductance plateau in quantum anomalous Hall insulator–superconductor structures Authors: Yingyi Huang, F. Setiawan, and Jay D. Sau arXiv:1708.06752 Recommended with a commentary by Carlo Beenakker, Instituut-Lorentz, Leiden University. |View Commentary| DOI: 10.36471/JCCM_September_2017_01 […]

Topological magnetoelectric effect versus quantum Faraday effect

1. Observation of topological Faraday and Kerr rotations in quantum anomalous Hall state by terahertz magneto-optics. Authors: K.N. Okada, Y. Takahashi, M. Mogi, R. Yoshimi, A. Tsukazaki, K.S. Takahashi, N. Ogawa, M. Kawasaki, and Y. Tokura arXiv:1603.02113 2. Quantized Faraday and Kerr rotation and axion electrodynamics of the surface states of three-dimensional topological insulators. Authors: […]

Tipping the Weyl cone

1.Quantum transport in Dirac materials: Signatures of tilted and anisotropic Dirac and Weyl cones. Authors:M. Trescher, B. Sbierski, P.W. Brouwer, and E.J. Bergholtz. Phys.Rev.B 91,115135(2015) 2.A new type of Weyl semimetals. Authors:A A. Soluyanov, D. Gresch, Z. Wang, Q. Wu, M. Troyer, Z. Dai, and B.A. Bernevig. arXiv:1507.01603(2015) Recommended with a commentary by Carlo Beenakker, […]

How to image an electron lattice

Composite fermions waltz to the tune of a Wigner crystal. Authors: Y. Liu, H. Deng, M. Shayegan, L.N. Pfeiffer, K.W. West, K.W. Baldwin. arXiv:1410.3435 Recommended with a commentary by Carlo Beenakker, Leiden University |View Commentary| DOI: 10.36471/JCCM_November_2014_01 https://doi.org/10.36471/JCCM_November_2014_01

Single electrons ride the Fermi sea

Minimal-excitation states for electron quantum optics using levitons Authors: J. Dubois, T. Jullien, F. Portier, P. Roche, A. Cavanna, Y. Jin, W. Wegscheider, P. Roulleau and D. C. Glattli Nature 502, 659 (2013) Recommended with a commentary by Carlo Beenakker, Leiden University |View Commentary| DOI: 10.36471/JCCM_December_2013_01 https://doi.org/10.36471/JCCM_December_2013_01

Hofstadter’s butterfly gets caught in graphene

1. Hofstadter’s butterfly in Moire superlattices: A fractal quantum Hall effect. Authors: C. R. Dean, L. Wang, P. Maher, C. Forsythe, F. Ghahari, Y. Gao, J. Katoch, M. Ishigami, P. Moon, M. Koshino, T. Taniguchi, K. Watanabe, K. L. Shepard, J. Hone, P. Kim, arXiv:1212.4783. 2. Changes in Fermi surface topology and Hofstadter quantization in […]

Majorana fermions debut

Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices. Authors: V. Mourik, K. Zuo, S.M. Frolov, S.R. Plissard, E.P.A.M. Bakkers, and L.P. Kouwenhoven. Science 336, 1003 (2012), arXiv:1204.2792 Recommended with a commentary by Carlo Beenakker, Leiden University |View Commentary (PDF)| DOI: 10.36471/JCCM_May_2012_02 https://doi.org/10.36471/JCCM_May_2012_02

Developments in anyonic interferometry

1. Braiding of Abelian and non-Abelian anyons in the fractional quantum Hall effect Authors: S. An, P. Jiang, H. Choi, W. Kang, S.H. Simon, L.N. Pfeiffer, K.W. West, and K.W. Baldwin arXiv:1112.3400 2. Telegraph noise and the Fabry-Perot quantum Hall interferometer Authors: B. Rosenow and S.H. Simon arXiv:1111.6475 Recommended with a commentary by Carlo Beenakker, […]

Developments in Topological Insulators

1. Quantum Hall effect from the topological surface states of strained bulk HgTe Authors: C. Brune, C.X. Liu, E.G. Novik, E.M. Hankiewicz, H. Buhmann, Y.L. Chen, X.L. Qi, Z.X. Shen, S.C. Zhang and L.W. Molenkamp Phys. Rev. Lett. 106, 126803 (2011) 2. Gate-tuned normal and superconducting transport at the surface of a topological insulator, Authors: […]

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: Daniel F. Agterberg , University of Wisconsin – Milwaukee | View Contributions | Anton Akhmerov, Delft University of Technology | View Contributions […]

Hanbury-Brown Twiss correlations to probe the population statistics of GHz photons emitted by conductors

Authors: Julien Gabelli, Laure-Helene Reydellet, Gwendal Feve,  Jean-Marc Berroir, Bernard Placais, Patrice Roche, Christian Glattli. http://arXiv.org/cond-mat/0403584 Recommended and a Commentary by Carlo Beenakker, Lorentz Institute, Leiden University. | View Commentary (pdf) | (JCCM_Apr04_01)

Environmental effects in the third moment of voltage fluctuations in a tunnel junction

Authors: B. Reulet, J. Senzier, D.E. Prober http://arxiv.org/abs/cond-mat/0302084 Recommended and a Commentary by Carlo Beenakker, University of Leiden | View Commentary (pdf) | JCCM_oct03_02

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