Zobrazeno 1 - 10
of 3 676
pro vyhledávání: '"A. Calugaru"'
Autor:
Feng, X., Jiang, Y., Hu, H., Călugăru, D., Regnault, N., Vergniory, M. G., Felser, C., Blanco-Canosa, S., Bernevig, B. Andrei
Kagome materials manifest rich physical properties due to the emergence of abundant electronic phases. Here, we carry out a high-throughput first-principles study of the kagome 1:6:6 family MT$_6$Z$_6$ materials in space group 191, focusing on their
Externí odkaz:
http://arxiv.org/abs/2409.13078
Autor:
Korshunov, A., Kar, A., Lim, C. -Y., Subires, D., Deng, J., Jiang, Y., Hu, H., Călugăru, D., Yi, C., Roychowdhury, S., Shekhar, C., Garbarino, G., Törmä, P., Felser, C., Bernevig, B. Andrei, Blanco-Canosa, S.
Electronic ordering is prevalent in correlated systems, which commonly exhibit competing interactions. Here, we use x-ray diffraction to show that the charge density wave transition temperature of FeGe increases with pressure and evolves towards a $\
Externí odkaz:
http://arxiv.org/abs/2409.04325
Autor:
Subires, D., Kar, A., Korshunov, A., Fuller, C. A., Jiang, Y., Hu, H., Călugăru, Dumitru, McMonagle, C., Yi, C., Roychowdhury, S., Shekhar, C., Strempfer, J., Jana, A., Vobornik, I., Dai, J., Tallarida, M., Chernyshov, D., Bosak, A., Felser, C., Bernevig, B. Andrei, Blanco-Canosa, S.
The intrinsic frustrated nature of a kagome lattice is amenable to the realization of exotic phases of matter, such as quantum spin liquids or spin ices, and more recently the multiple-$\mathrm{\textbf{q}}$ charge density waves (CDW) in the kagome me
Externí odkaz:
http://arxiv.org/abs/2408.04452
Autor:
Herzog-Arbeitman, Jonah, Yu, Jiabin, Călugăru, Dumitru, Hu, Haoyu, Regnault, Nicolas, Vafek, Oskar, Kang, Jian, Bernevig, B. Andrei
Although the strongly interacting flat bands in twisted bilayer graphene (TBG) have been approached using the minimal Bistritzer-MacDonald (BM) Hamiltonian, there is mounting evidence that strain and lattice relaxation are essential in correctly dete
Externí odkaz:
http://arxiv.org/abs/2405.13880
Autor:
Herzog-Arbeitman, Jonah, Yu, Jiabin, Călugăru, Dumitru, Hu, Haoyu, Regnault, Nicolas, Liu, Chaoxing, Vafek, Oskar, Coleman, Piers, Tsvelik, Alexei, Song, Zhi-da, Bernevig, B. Andrei
We propose a general principle for the low-energy theory of narrow bands with concentrated Berry curvature and Fubini-Study metric in the form of a map to Anderson-"+" models composed of heavy fermions hybridizing and interacting with semi-metallic m
Externí odkaz:
http://arxiv.org/abs/2404.07253
Autor:
Călugăru, Dumitru, Hu, Haoyu, Merino, Rafael Luque, Regnault, Nicolas, Efetov, Dmitri K., Bernevig, B. Andrei
We study the interacting transport properties of twisted bilayer graphene (TBG) using the topological heavy-fermion (THF) model. In the THF model, TBG comprises localized, correlated $f$-electrons and itinerant, dispersive $c$-electrons. We focus on
Externí odkaz:
http://arxiv.org/abs/2402.14057
Autor:
Batlle-Porro, Sergi, Calugaru, Dumitru, Hu, Haoyu, Kumar, Roshan Krishna, Hesp, Niels C. H., Watanabe, Kenji, Taniguchi, Takashi, Bernevig, B. Andrei, Stepanov, Petr, Koppens, Frank H. L.
Ever since the initial experimental observation of correlated insulators and superconductivity in the flat Dirac bands of magic angle twisted bilayer graphene, a search for the microscopic description that explains its strong electronic interactions
Externí odkaz:
http://arxiv.org/abs/2402.12296
Autor:
Merino, Rafael Luque, Calugaru, Dumitru, Hu, Haoyu, Diez-Merida, Jaime, Diez-Carlon, Andres, Taniguchi, Takashi, Watanabe, Kenji, Seifert, Paul, Bernevig, B. Andrei, Efetov, Dmitri K.
It has been recently postulated, that the strongly correlated flat bands of magicangle twisted bilayer graphene (MATBG) can host coexisting heavy and light carriers. While transport and spectroscopic measurements have shown hints of this behavior, a
Externí odkaz:
http://arxiv.org/abs/2402.11749
Autor:
Jiang, Yi, Hu, Haoyu, Călugăru, Dumitru, Felser, Claudia, Blanco-Canosa, Santiago, Weng, Hongming, Xu, Yuanfeng, Bernevig, B. Andrei
The electronic structure and interactions of kagome materials such as 1:1 (FeGe class) and 1:6:6 (MgFe$_6$Ge$_6$ class) are complicated and involve many orbitals and bands at the Fermi level. Current theoretical models treat the systems in an $s$-orb
Externí odkaz:
http://arxiv.org/abs/2311.09290
Autor:
Rai, Gautam, Crippa, Lorenzo, Călugăru, Dumitru, Hu, Haoyu, Paoletti, Francesca, Medici, Luca de', Georges, Antoine, Bernevig, B. Andrei, Valentí, Roser, Sangiovanni, Giorgio, Wehling, Tim
Publikováno v:
Phys. Rev. X 14, 031045 --- Published 11 September 2024
In magic angle twisted bilayer graphene, transport, thermodynamic and spectroscopic experiments pinpoint at a competition between distinct low-energy states with and without electronic order. We use Dynamical Mean Field Theory (DMFT) on the topologic
Externí odkaz:
http://arxiv.org/abs/2309.08529