192 citations · 2.6k across the 109 of their papers we have counts for
111 papers
Projective representation theory of spin space groups
Zheng Zhang, Peiyuan Wang, Y. X. Zhao
Spin space groups provide the natural symmetry framework for magnetic crystals with weak spin-orbit coupling, but extracting their physical consequences requires a general theory o…
Complete Topological Classification with P and T Symmetries: Revealing a Topological Invariant Invisible to K-Theory
Chen Zhang, Y. X. Zhao
The K-theoretic framework provides a complete topological classification of the tenfold symmetry classes and has been generalized to incorporate crystalline symmetries. Here, we sh…
Realization of Arbitrary Gauge Fields via Symmetry-Protected Zero Modes
J. X. Dai, Bingbing Wang, Jiangzi Chen +2
Gauge fields are fundamental to modern physics, but prescribed gauge configurations are often difficult to implement in artificial systems. Here, we present a general scheme for re…
Flux-Mediated Correspondence Between Real- and Momentum-Space Nonsymmorphicity
Z. Y. Chen, Y. X. Zhao
Momentum-space nonsymmorphic symmetries have recently attracted significant interest in both artificial and condensed-matter crystals, whereas real-space nonsymmorphic symmetries h…
Symmetry's Real Topology
J. X. Dai, Y. X. Zhao
Symmetry-protected topological phases have been a central theme in condensed matter physics and beyond over the past two decades. Most efforts have focused on topological classific…
A Cohomological Framework for Topological Phases from Momentum-Space Crystallographic Groups
T. R. Liu, Zheng Zhang, Y. X. Zhao
Crystallographic groups are conventionally studied in real space to characterize crystal symmetries. Recent work has recognized that when these symmetries are realized projectively…
Universal valley filtering via uniform dissipation and velocity contrast
Sijie Yue, Wentao Xie, Kai Shao +6
Valley, as a ubiquitous degree of freedom in lattices, has found wide applications in both electronic and classical-wave devices in recent years. However, achieving valley-polarize…
Asymmetric real topology of conduction and valence bands
J. X. Dai, Chen Zhang, Y. X. Zhao
Previously, it was believed that conduction and valence bands exhibit a symmetry: They possess opposite topological invariants (e.g., the Chern numbers of conduction and valence ba…
Brillouin Platycosms and Topological Phases
Chen Zhang, Peiyuan Wang, Junkun Lyu +1
There exist ten distinct closed flat D manifolds, known as platycosms, which hold significance in mathematics and have been postulated as potential geometric models for our univ…
Instanton-Induced Supersymmetry Breaking in Topological Semimetals
W. B. Rui, Y. X. Zhao, Z. D. Wang
Supersymmetry (SUSY) proposed as an elementary symmetry for physics beyond the Standard Model has found important applications in various areas outside high-energy physics. Here, w…
Hilbert band complexes and their applications
Zeying Zhang, Y. X. Zhao, Yugui Yao +1
The study of band connectivity is a fundamental problem in condensed matter physics. Here, we develop a new method for analyzing band connectivity, which completely solves the outs…
Topological classification for chiral symmetry with non-equal sublattices
J. X. Dai, Y. X. Zhao
Chiral symmetry on bipartite lattices with different numbers of -sites and -sites is exceptional in condensed matter, as it gives rise to zero-energy flat bands. Crystalline…
Revealing the spatial nature of sublattice symmetry
Rong Xiao, Y. X. Zhao
The sublattice symmetry on a bipartite lattice is commonly regarded as the chiral symmetry in the AIII class of the tenfold Altland-Zirnbauer classification. Here, we reveal the sp…
Stability and noncentered PT symmetry of real topological phases
S. J. Yue, Qing Liu, Shengyuan A. Yang +1
Real topological phases protected by the spacetime inversion (P T) symmetry are a current research focus. The basis is that the P T symmetry endows a real structure in momentum spa…
Quantum Metric Nonlinear Spin-Orbit Torque Enhanced by Topological Bands
Xukun Feng, Weikang Wu, Hui Wang +5
Effects manifesting quantum geometry have been a focus of physics research. Here, we reveal that quantum metric plays a crucial role in nonlinear electric spin response, leading to…
Projective symmetry determined topology in flux Su-Schrieffer-Heeger model
Gang Jiang, Z. Y. Chen, S. J. Yue +4
In the field of symmetry-protected topological phases, a common wisdom is that the symmetries fix the topological classifications, but they alone cannot determine whether a system…
Making topologically trivial non-Hermitian systems nontrivial via gauge fields
W. B. Rui, Y. X. Zhao, Z. D. Wang
Non-Hermiticity significantly enriches the concepts of symmetry and topology in physics. Particularly, non-Hermiticity gives rise to the ramified symmetries, where the non-Hermitia…
Projective Spacetime Symmetry of Spacetime Crystals
Zheng Zhang, Z. Y. Chen, Y. X. Zhao
Wigner's seminal work on the Poincaré group revealed one of the fundamental principles of quantum theory: symmetry groups are projectively represented. The condensed-matter counter…
General Theory of Momentum-Space Nonsymmorphic Symmetry
Chen Zhang, Z. Y. Chen, Zheng Zhang +1
As a fundamental concept of all crystals, space groups are partitioned into symmorphic groups and nonsymmorphic groups. Each nonsymmorphic group contains glide reflections or screw…
Stiefel-Whitney topological charges in a three-dimensional acoustic nodal-line crystal
Haoran Xue, Z. Y. Chen, Zheyu Cheng +4
Band topology of materials describes the extent Bloch wavefunctions are twisted in momentum space. Such descriptions rely on a set of topological invariants, generally referred to…
Upper bound of a band complex
Si Li, Zeying Zhang, Xukun Feng +5
Band structure for a crystal generally consists of connected components in energy-momentum space, known as band complexes. Here, we explore a fundamental aspect regarding the maxim…
Classification of time-reversal-invariant crystals with gauge structures
Z. Y. Chen, Zheng Zhang, Shengyuan A. Yang +1
A peculiar feature of quantum states is that they may embody so-called projective representations of symmetries rather than ordinary representations. Projective representations of…
Hermitian Topologies originating from non-Hermitian braidings
W. B. Rui, Y. X. Zhao, Z. D. Wang
The complex energy bands of non-Hermitian systems braid in momentum space even in one dimension. Here, we reveal that the non-Hermitian braiding underlies the Hermitian topological…
ATHENA Detector Proposal -- A Totally Hermetic Electron Nucleus Apparatus proposed for IP6 at the Electron-Ion Collider
ATHENA Collaboration, J. Adam, L. Adamczyk +433
ATHENA has been designed as a general purpose detector capable of delivering the full scientific scope of the Electron-Ion Collider. Careful technology choices provide fine trackin…