Zobrazeno 1 - 10
of 8 138
pro vyhledávání: '"Van Hove singularity"'
The discovery of Mott insulators and superconductivity in twisted bilayer graphene has ignited intensive research into strong correlation effects in other stacking geometries. Bernal-stacked bilayer graphene (BBG), when subjected to a perpendicular e
Externí odkaz:
http://arxiv.org/abs/2410.05387
Autor:
Nag, Pranab Kumar, Batabyal, Rajib, Ingham, Julian, Morali, Noam, Tan, Hengxin, Koo, Jahyun, Consiglio, Armando, Liu, Enke, Avraham, Nurit, Queiroz, Raquel, Thomale, Ronny, Yan, Binghai, Felser, Claudia, Beidenkopf, Haim
Materials hosting flat bands at the vicinity of the Fermi level promote exotic symmetry broken states. Common to many of these are van Hove singularities at saddle points of the dispersion or even higher-order van Hove singularities where the dispers
Externí odkaz:
http://arxiv.org/abs/2410.01994
Autor:
Knüppel, Patrick, Zhu, Jiacheng, Xia, Yiyu, Xia, Zhengchao, Han, Zhongdong, Zeng, Yihang, Watanabe, Kenji, Taniguchi, Takashi, Shan, Jie, Mak, Kin Fai
Twisted bilayers of transition metal dichalcogenide semiconductors have enabled the discovery of superconductivity, ferromagnetism, correlated insulators and a series of new topological phases of matter. However, the connection between these electron
Externí odkaz:
http://arxiv.org/abs/2406.03315
We investigate the nonlinear magneto-optical response in non-centrosymmetric magnetic Weyl semimetals featuring a quadratic tilt, focusing particularly on the influence of the van Hove singularity (VHS). In the absence of a magnetic field, the second
Externí odkaz:
http://arxiv.org/abs/2407.18094
Non-Fermi liquids, particularly the universal strange metal, are ubiquitously observed in strongly correlated materials, that includes the high-$T_c$ cuprates, ruthenate oxides and twisted bilayer graphenes. The unprecedent tunablity of these two-dim
Externí odkaz:
http://arxiv.org/abs/2407.02270
Publikováno v:
Current Applied Physics 68, 31 (2024)
Vanadium-based kagome systems AV$_3$Sb$_5$ (A = K, Rb, Cs) have emerged as paradigmatic examples exhibiting unconventional charge density waves (CDWs) and superconductivity linked to van Hove singularities (VHSs). Despite extensive studies, the three
Externí odkaz:
http://arxiv.org/abs/2408.10402
Autor:
Zhong, Yigui, Suzuki, Takeshi, Liu, Hongxiong, Liu, Kecheng, Nie, Zhengwei, Shi, Youguo, Meng, Sheng, Lv, Baiqing, Ding, Hong, Kanai, Teruto, Itatani, Jiro, Shin, Shik, Okazaki, Kozo
Kagome superconductor CsV3Sb5, which exhibits intertwined unconventional charge density wave (CDW) and superconductivity, has garnered significant attention recently. Despite extensive static studies, the nature of these exotic electronic orders rema
Externí odkaz:
http://arxiv.org/abs/2407.17015
Publikováno v:
Phys. Rev. B 109, 205133(2024)
We have investigated the magnetism and pairing correlations of the triangular lattice based on the Hubbard model using the determinant quantum Monte Carlo method and the constrained path Monte Carlo. The results show that the presence of the next-nea
Externí odkaz:
http://arxiv.org/abs/2405.08438
Autor:
Igoshev, Petr A., Nekrasov, Igor A.
A thermodynamic theory based on Landau grand potential expansion for ferromagnetic-paramagnetic phase transitions is developed for an electronic phase-separated state. It is rigorously shown that ferromagnetic phase involved in the phase-separated st
Externí odkaz:
http://arxiv.org/abs/2405.10794
Autor:
Nishinakayama, Rei, Sato, Yoshiki J., Yamanaka, Takayoshi, Maeno, Yoshiteru, Yaguchi, Hiroshi, Kikugawa, Naoki, Okazaki, Ryuji
Publikováno v:
Phys. Rev. Research 6, 023222 (2024)
The layered perovskite Sr$_2$RuO$_4$ serves as a model material of the two-dimensional (2D) Fermi liquid but also exhibits various emergent phenomena including the non-Fermi-liquid (NFL) behavior under external perturbations such as uniaxial pressure
Externí odkaz:
http://arxiv.org/abs/2404.11300