Zobrazeno 1 - 10
of 279
pro vyhledávání: '"B Andrei, Bernevig"'
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-12 (2024)
Abstract The recently introduced topological heavy fermion model (THFM) provides a means for interpreting the low-energy electronic degrees of freedom of the magic angle twisted bilayer graphene as hybridization amidst highly dispersing topological c
Externí odkaz:
https://doaj.org/article/84eda3bad6af4f778785acf07d31cfbb
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-13 (2024)
Abstract Transitions between distinct obstructed atomic insulators (OAIs) protected by crystalline symmetries, where electrons form molecular orbitals centering away from the atom positions, must go through an intermediate metallic phase. In this wor
Externí odkaz:
https://doaj.org/article/c417866f80a24e71ab9a15cf79fbb9cb
Autor:
Kaijie Yang, Zian Xu, Yanjie Feng, Frank Schindler, Yuanfeng Xu, Zhen Bi, B. Andrei Bernevig, Peizhe Tang, Chao-Xing Liu
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-8 (2024)
Abstract The presence of topological flat minibands in moiré materials provides an opportunity to explore the interplay between topology and correlation. In this work, we study moiré minibands in topological insulator films with two hybridized surf
Externí odkaz:
https://doaj.org/article/951a2733ea3340a78508afda95cbff36
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-9 (2024)
Abstract The topological phases of non-interacting fermions have been classified by their symmetries, culminating in a modern electronic band theory where wavefunction topology can be obtained from momentum space. Recently, Real Space Invariants (RSI
Externí odkaz:
https://doaj.org/article/31279564006b492fb6730c42c830280f
Publikováno v:
Physical Review X, Vol 14, Iss 4, p 041004 (2024)
We introduce the concept of “quantum geometric nesting” (QGN) to characterize the idealized ordering tendencies of certain flat-band systems implicit in the geometric structure of the flat-band subspace. Perfect QGN implies the existence of an in
Externí odkaz:
https://doaj.org/article/5294769b548d46dda1788b3f3a682e13
Autor:
Gautam Rai, Lorenzo Crippa, Dumitru Călugăru, Haoyu Hu, Francesca Paoletti, Luca de’ Medici, Antoine Georges, B. Andrei Bernevig, Roser Valentí, Giorgio Sangiovanni, Tim Wehling
Publikováno v:
Physical Review X, Vol 14, Iss 3, p 031045 (2024)
The interplay of dynamical correlations and electronic ordering is pivotal in shaping phase diagrams of correlated quantum materials. In magic-angle twisted bilayer graphene, transport, thermodynamic, and spectroscopic experiments pinpoint a competit
Externí odkaz:
https://doaj.org/article/05b5afc100f0460cb742f642498b4058
Autor:
A. Korshunov, H. Hu, D. Subires, Y. Jiang, D. Călugăru, X. Feng, A. Rajapitamahuni, C. Yi, S. Roychowdhury, M. G. Vergniory, J. Strempfer, C. Shekhar, E. Vescovo, D. Chernyshov, A. H. Said, A. Bosak, C. Felser, B. Andrei Bernevig, S. Blanco-Canosa
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-8 (2023)
Abstract Geometrically frustrated kagome lattices are raising as novel platforms to engineer correlated topological electron flat bands that are prominent to electronic instabilities. Here, we demonstrate a phonon softening at the k z = π plane in S
Externí odkaz:
https://doaj.org/article/98e0b7a85ab8451f874872f94020b5a1
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-1 (2024)
Externí odkaz:
https://doaj.org/article/de723015957c4c07a5a7b5647154818f
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-18 (2022)
Many topological crystalline phases have unknown physical responses. Here, the authors systematically extend the theory of defect and flux responses to predict zero-dimensional (0D) states in topological crystalline materials, including 2D PbTe monol
Externí odkaz:
https://doaj.org/article/e1d9a8b684d84917b5278c2ed06f888b
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-10 (2021)
The band topology of nonmagnetic crystals can be characterized by Topological Quantum Chemistry (TQC), whereas the band topology of magnetic crystals remains unexplored. Here, the authors extend TQC to the magnetic space groups to form a complete, re
Externí odkaz:
https://doaj.org/article/750587c78ccc47baa6dd6624eed82b9f