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New paradigms for correlated quantum matter: Hierarchical topology, Kondo topological metals, and deep learning

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Publications

Higher-order topological insulators

Author(s): Schindler, Frank; Cook, Ashley M.; Vergniory, Maia G.; Wang, Zhijun; Parkin, Stuart S. P.; Bernevig, B. Andrei; Neupert, Titus
Published in: Schindler, Frank; Cook, Ashley M; Vergniory, Maia G; Wang, Zhijun; Parkin, Stuart S P; Bernevig, B Andrei; Neupert, Titus (2018). Higher-order topological insulators. Science Advances, 4(6):eaat0346., Issue 1, 2018, ISSN 2375-2548
DOI: 10.5167/uzh-158543

Many-body localization and delocalization in large quantum chains

Author(s): Elmer V. H. Doggen, Frank Schindler, Konstantin S. Tikhonov, Alexander D. Mirlin, Titus Neupert, Dmitry G. Polyakov, Igor V. Gornyi
Published in: Physical Review B, Issue 98/17, 2018, ISSN 2469-9950
DOI: 10.1103/PhysRevB.98.174202

Magnetic and noncentrosymmetric Weyl fermion semimetals in the R AlGe family of compounds ( R = rare earth

Author(s): Guoqing Chang, Bahadur Singh, Su-Yang Xu, Guang Bian, Shin-Ming Huang, Chuang-Han Hsu, Ilya Belopolski, Nasser Alidoust, Daniel S. Sanchez, Hao Zheng, Hong Lu, Xiao Zhang, Yi Bian, Tay-Rong Chang, Horng-Tay Jeng, Arun Bansil, Han Hsu, Shuang Jia, Titus Neupert, Hsin Lin, M. Zahid Hasan
Published in: Physical Review B, Issue 97/4, 2018, ISSN 2469-9950
DOI: 10.1103/physrevb.97.041104

Measurement of the Entanglement Spectrum of a Symmetry-Protected Topological State Using the IBM Quantum Computer

Author(s): Kenny Choo, Curt W. von Keyserlingk, Nicolas Regnault, Titus Neupert
Published in: Physical Review Letters, Issue 121/8, 2018, ISSN 0031-9007
DOI: 10.1103/physrevlett.121.086808

Symmetries and Many-Body Excitations with Neural-Network Quantum States

Author(s): Kenny Choo, Giuseppe Carleo, Nicolas Regnault, Titus Neupert
Published in: Physical Review Letters, Issue 121/16, 2018, ISSN 0031-9007
DOI: 10.1103/PhysRevLett.121.167204

Higher-order symmetry-protected topological states for interacting bosons and fermions

Author(s): Yizhi You, Trithep Devakul, F. J. Burnell, Titus Neupert
Published in: Physical Review B, Issue 98/23, 2018, ISSN 2469-9950
DOI: 10.1103/PhysRevB.98.235102

Higher-order topology in bismuth

Author(s): Frank Schindler, Zhijun Wang, Maia G. Vergniory, Ashley M. Cook, Anil Murani, Shamashis Sengupta, Alik Yu. Kasumov, Richard Deblock, Sangjun Jeon, Ilya Drozdov, Hélène Bouchiat, Sophie Guéron, Ali Yazdani, B. Andrei Bernevig, Titus Neupert
Published in: Nature Physics, Issue 14/9, 2018, Page(s) 918-924, ISSN 1745-2473
DOI: 10.1038/s41567-018-0224-7

Two-dimensional type-II Dirac fermions in layered oxides

Author(s): M. Horio, C. E. Matt, K. Kramer, D. Sutter, A. M. Cook, Y. Sassa, K. Hauser, M. Månsson, N. C. Plumb, M. Shi, O. J. Lipscombe, S. M. Hayden, T. Neupert, J. Chang
Published in: Nature Communications, Issue 9/1, 2018, ISSN 2041-1723
DOI: 10.1038/s41467-018-05715-2

Topological quantum properties of chiral crystals

Author(s): Guoqing Chang, Benjamin J. Wieder, Frank Schindler, Daniel S. Sanchez, Ilya Belopolski, Shin-Ming Huang, Bahadur Singh, Di Wu, Tay-Rong Chang, Titus Neupert, Su-Yang Xu, Hsin Lin, M. Zahid Hasan
Published in: Nature Materials, Issue 17/11, 2018, Page(s) 978-985, ISSN 1476-1122
DOI: 10.1038/s41563-018-0169-3

Competing orders in the Hofstadter t – J model

Author(s): Wei-Lin Tu, Frank Schindler, Titus Neupert, Didier Poilblanc
Published in: Physical Review B, Issue 97/3, 2018, ISSN 2469-9950
DOI: 10.1103/physrevb.97.035154

Numerical investigation of gapped edge states in fractional quantum Hall-superconductor heterostructures

Author(s): Cécile Repellin, Ashley M. Cook, Titus Neupert, Nicolas Regnault
Published in: npj Quantum Materials, Issue 3/1, 2018, ISSN 2397-4648
DOI: 10.1038/s41535-018-0085-4

Three-Dimensional Fermi Surface of Overdoped La-Based Cuprates

Author(s): M. Horio, K. Hauser, Y. Sassa, Z. Mingazheva, D. Sutter, K. Kramer, A. Cook, E. Nocerino, O. K. Forslund, O. Tjernberg, M. Kobayashi, A. Chikina, N. B. M. Schröter, J. A. Krieger, T. Schmitt, V. N. Strocov, S. Pyon, T. Takayama, H. Takagi, O. J. Lipscombe, S. M. Hayden, M. Ishikado, H. Eisaki, T. Neupert, M. Månsson, C. E. Matt, J. Chang
Published in: Physical Review Letters, Issue 121/7, 2018, ISSN 0031-9007
DOI: 10.1103/physrevlett.121.077004

Topolectrical-circuit realization of topological corner modes

Author(s): Stefan Imhof, Christian Berger, Florian Bayer, Johannes Brehm, Laurens W. Molenkamp, Tobias Kiessling, Frank Schindler, Ching Hua Lee, Martin Greiter, Titus Neupert, Ronny Thomale
Published in: Nature Physics, Issue 14/9, 2018, Page(s) 925-929, ISSN 1745-2473
DOI: 10.1038/s41567-018-0246-1

Direct observation of orbital hybridisation in a cuprate superconductor

Author(s): C. E. Matt, D. Sutter, A. M. Cook, Y. Sassa, M. Månsson, O. Tjernberg, L. Das, M. Horio, D. Destraz, C. G. Fatuzzo, K. Hauser, M. Shi, M. Kobayashi, V. N. Strocov, T. Schmitt, P. Dudin, M. Hoesch, S. Pyon, T. Takayama, H. Takagi, O. J. Lipscombe, S. M. Hayden, T. Kurosawa, N. Momono, M. Oda, T. Neupert, J. Chang
Published in: Nature Communications, Issue 9/1, 2018, ISSN 2041-1723
DOI: 10.1038/s41467-018-03266-0

Theory for the negative longitudinal magnetoresistance in the quantum limit of Kramers Weyl semimetals

Author(s): Bo Wan, Frank Schindler, Ke Wang, Kai Wu, Xiangang Wan, Titus Neupert, Hai-Zhou Lu
Published in: Journal of Physics: Condensed Matter, Issue 30/50, 2018, Page(s) 505501, ISSN 0953-8984
DOI: 10.1088/1361-648x/aaebed

Custodial glide symmetry of quantum spin Hall edge modes in monolayer WTe 2

Author(s): Seulgi Ok, Lukas Muechler, Domenico Di Sante, Giorgio Sangiovanni, Ronny Thomale, Titus Neupert
Published in: Physical Review B, Issue 99/12, 2019, ISSN 2469-9950
DOI: 10.1103/physrevb.99.121105

Negative flat band magnetism in a spin–orbit-coupled correlated kagome magnet

Author(s): Jia-Xin Yin, Songtian S. Zhang, Guoqing Chang, Qi Wang, Stepan S. Tsirkin, Zurab Guguchia, Biao Lian, Huibin Zhou, Kun Jiang, Ilya Belopolski, Nana Shumiya, Daniel Multer, Maksim Litskevich, Tyler A. Cochran, Hsin Lin, Ziqiang Wang, Titus Neupert, Shuang Jia, Hechang Lei, M. Zahid Hasan
Published in: Nature Physics, Issue 15/5, 2019, Page(s) 443-448, ISSN 1745-2473
DOI: 10.1038/s41567-019-0426-7

Band structure of overdoped cuprate superconductors: Density functional theory matching experiments

Author(s): K. P. Kramer, M. Horio, S. S. Tsirkin, Y. Sassa, K. Hauser, C. E. Matt, D. Sutter, A. Chikina, N. B. M. Schröter, J. A. Krieger, T. Schmitt, V. N. Strocov, N. C. Plumb, M. Shi, S. Pyon, T. Takayama, H. Takagi, T. Adachi, T. Ohgi, T. Kawamata, Y. Koike, T. Kondo, O. J. Lipscombe, S. M. Hayden, M. Ishikado, H. Eisaki, T. Neupert, J. Chang
Published in: Physical Review B, Issue 99/22, 2019, ISSN 2469-9950
DOI: 10.1103/physrevb.99.224509

Neural network based classification of crystal symmetries from x-ray diffraction patterns

Author(s): Pascal Marc Vecsei, Kenny Choo, Johan Chang, Titus Neupert
Published in: Physical Review B, Issue 99/24, 2019, ISSN 2469-9950
DOI: 10.1103/physrevb.99.245120

Atomic limit and inversion-symmetry indicators for topological superconductors

Author(s): Anastasiia Skurativska, Titus Neupert, Mark H. Fischer
Published in: Physical Review Research, Issue 2/1, 2020, ISSN 2643-1564
DOI: 10.1103/PhysRevResearch.2.013064

Two-dimensional frustrated J 1 − J 2 model studied with neural network quantum states

Author(s): Kenny Choo, Titus Neupert, Giuseppe Carleo
Published in: Physical Review B, Issue 100/12, 2019, ISSN 2469-9950
DOI: 10.1103/PhysRevB.100.125124

Unhinging the Surfaces of Higher-Order Topological Insulators and Superconductors

Author(s): Apoorv Tiwari, Ming-Hao Li, B. A. Bernevig, Titus Neupert, S. A. Parameswaran
Published in: Physical Review Letters, Issue 124/4, 2020, ISSN 0031-9007
DOI: 10.1103/PhysRevLett.124.046801

Non-Abelian chiral spin liquid on a simple non-Archimedean lattice

Author(s): V. Peri, S. Ok, S. S. Tsirkin, T. Neupert, G. Baskaran, M. Greiter, R. Moessner, R. Thomale
Published in: Physical Review B, Issue 101/4, 2020, ISSN 2469-9950
DOI: 10.1103/physrevb.101.041114

Nodeless superconductivity and its evolution with pressure in the layered dirac semimetal 2M-WS2

Author(s): Zurab Guguchia, Dariusz J. Gawryluk, Marta Brzezinska, Stepan S. Tsirkin, Rustem Khasanov, Ekaterina Pomjakushina, Fabian O. von Rohr, Joel A. T. Verezhak, M. Zahid Hasan, Titus Neupert, Hubertus Luetkens, Alex Amato
Published in: npj Quantum Materials, Issue 4/1, 2019, ISSN 2397-4648
DOI: 10.1038/s41535-019-0189-5

Exactly soluble model for a fractionalized Weyl semimetal

Author(s): Fabian Hotz, Apoorv Tiwari, Oguz Turker, Tobias Meng, Ady Stern, Maciej Koch-Janusz, Titus Neupert
Published in: Physical Review Research, Issue 1/3, 2019, ISSN 2643-1564
DOI: 10.1103/physrevresearch.1.033029

Fractional corner charges in spin-orbit coupled crystals

Author(s): Frank Schindler, Marta Brzezińska, Wladimir A. Benalcazar, Mikel Iraola, Adrien Bouhon, Stepan S. Tsirkin, Maia G. Vergniory, Titus Neupert
Published in: Physical Review Research, Issue 1/3, 2019, ISSN 2643-1564
DOI: 10.1103/physrevresearch.1.033074

Topological many-body scar states in dimensions one, two, and three

Author(s): Seulgi Ok, Kenny Choo, Christopher Mudry, Claudio Castelnovo, Claudio Chamon, Titus Neupert
Published in: Physical Review Research, Issue 1/3, 2019, ISSN 2643-1564
DOI: 10.1103/physrevresearch.1.033144

Magnetism and anomalous transport in the Weyl semimetal PrAlGe: possible route to axial gauge fields

Author(s): Daniel Destraz, Lakshmi Das, Stepan S. Tsirkin, Yang Xu, Titus Neupert, J. Chang, A. Schilling, Adolfo G. Grushin, Joachim Kohlbrecher, Lukas Keller, Pascal Puphal, Ekaterina Pomjakushina, Jonathan S. White
Published in: npj Quantum Materials, Issue 5/1, 2020, ISSN 2397-4648
DOI: 10.1038/s41535-019-0207-7

Tunable anomalous Hall conductivity through volume-wise magnetic competition in a topological kagome magnet

Author(s): Z. Guguchia, J. A. T. Verezhak, D. J. Gawryluk, S. S. Tsirkin, J.-X. Yin, I. Belopolski, H. Zhou, G. Simutis, S.-S. Zhang, T. A. Cochran, G. Chang, E. Pomjakushina, L. Keller, Z. Skrzeczkowska, Q. Wang, H. C. Lei, R. Khasanov, A. Amato, S. Jia, T. Neupert, H. Luetkens, M. Z. Hasan
Published in: Nature Communications, Issue 11/1, 2020, ISSN 2041-1723
DOI: 10.1038/s41467-020-14325-w

Topology and magnetism in the Kondo insulator phase diagram

Author(s): Michael Klett, Seulgi Ok, David Riegler, Peter Wölfle, Ronny Thomale, Titus Neupert
Published in: Physical Review B, Issue 101/16, 2020, ISSN 2469-9950
DOI: 10.1103/physrevb.101.161112

Unconventional Photocurrents from Surface Fermi Arcs in Topological Chiral Semimetals

Author(s): Guoqing Chang, Jia-Xin Yin, Titus Neupert, Daniel S. Sanchez, Ilya Belopolski, Songtian S. Zhang, Tyler A. Cochran, Zǐjiā Chéng, Ming-Chien Hsu, Shin-Ming Huang, Biao Lian, Su-Yang Xu, Hsin Lin, M. Zahid Hasan
Published in: Physical Review Letters, Issue 124/16, 2020, ISSN 0031-9007
DOI: 10.1103/physrevlett.124.166404

Emergent black hole dynamics in critical Floquet systems

Author(s): Bastien Lapierre, Kenny Choo, Clément Tauber, Apoorv Tiwari, Titus Neupert, Ramasubramanian Chitra
Published in: Physical Review Research, Issue 2/2, 2020, ISSN 2643-1564
DOI: 10.1103/physrevresearch.2.023085

Reciprocal skin effect and its realization in a topolectrical circuit

Author(s): Tobias Hofmann, Tobias Helbig, Frank Schindler, Nora Salgo, Marta Brzezińska, Martin Greiter, Tobias Kiessling, David Wolf, Achim Vollhardt, Anton Kabaši, Ching Hua Lee, Ante Bilušić, Ronny Thomale, Titus Neupert
Published in: Physical Review Research, Issue 2/2, 2020, ISSN 2643-1564
DOI: 10.1103/physrevresearch.2.023265

Pairing Obstructions in Topological Superconductors

Author(s): Frank Schindler, Barry Bradlyn, Mark H. Fischer, Titus Neupert
Published in: Physical Review Letters, Issue 124/24, 2020, ISSN 0031-9007
DOI: 10.1103/physrevlett.124.247001

Slave-boson analysis of the two-dimensional Hubbard model

Author(s): David Riegler, Michael Klett, Titus Neupert, Ronny Thomale, Peter Wölfle
Published in: Physical Review B, Issue 101/23, 2020, ISSN 2469-9950
DOI: 10.1103/physrevb.101.235137