Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Swain, Nyayabanta"'
Motivated by recent experiments in Gd$_3$Ru$_4$Al$_{12}$, we demonstrate the emergence of atomic scale Skyrmions in interacting spins on a breathing kagome lattice with competing nearest neighbor ferromagnetic and next nearest neighbor antiferromagne
Externí odkaz:
http://arxiv.org/abs/2203.03359
Publikováno v:
Phys. Rev. B 105, 195146 (2022)
Frustrated Mott insulators such as transition metal dichalcogenides present an ideal platform for the experimental realization of externally tuned insulator-metal transition. In this paper, we present the first nonperturbative numerical investigation
Externí odkaz:
http://arxiv.org/abs/2103.02623
Motivated by recent experiments on the observation of room temperature skyrmions in a layered heterostructure and subsequent demonstration of topological Hall effect in the same system, we have studied a minimal model of itinerant electrons coupled t
Externí odkaz:
http://arxiv.org/abs/2005.12307
Autor:
Huang, Ke, Wu, Liang, Wang, Maoyu, Swain, Nyayabanta, Motapothula, M., Luo, Yongzheng, Han, Kun, Chen, Mingfeng, Ye, Chen, Yang, Allen Jian, Xu, Huan, Qi, Dong-chen, N'Diaye, Alpha T., Panagopoulos, Christos, Primetzhofer, Daniel, Shen, Lei, Sengupta, Pinaki, Ma, Jing, Feng, Zhenxing, Nan, Ce-Wen, Wang, X. Renshaw
Publikováno v:
Applied Physics Reviews 7, 011401 (2020)
The ability to tune magnetic orders, such as magnetic anisotropy and topological spin texture, is desired in order to achieve high-performance spintronic devices. A recent strategy has been to employ interfacial engineering techniques, such as the in
Externí odkaz:
http://arxiv.org/abs/2001.05821
Publikováno v:
Phys. Rev. B 102, 245132 (2020)
We study the classical Heisenberg model on the geometrically frustrated Shastry-Sutherland (SS) lattice with additional Dzyaloshinskii-Moriya (DM) interaction in the presence of an external magnetic field. We show that several noncollinear and noncop
Externí odkaz:
http://arxiv.org/abs/1912.12972
Publikováno v:
Phys. Rev. Research 2, 023136 (2020)
We report the numerical investigation of strain induced superconductor-insulator quantum phase transition on a Lieb lattice. Based on a non perturbative Monte Carlo technique, we show that in two dimensions an s-wave superconductor undergoes transiti
Externí odkaz:
http://arxiv.org/abs/1912.04915
Publikováno v:
Phys. Rev. B 106, 245114 (2022)
The two orbital Hubbard model, with the electrons additionally coupled to a complex magnetic background, arises in the pyrochlore molybdates. The background involves local moments Hund's coupled to the electrons, driving double exchange ferromagnetis
Externí odkaz:
http://arxiv.org/abs/1610.00695
Autor:
Swain, Nyayabanta, Majumdar, Pinaki
Publikováno v:
J. Phys.: Condens. Matter 29, 085603 (2017 )
The checkerboard lattice, with alternating 'crossed' plaquettes, serves as the two dimensional analog of the pyrochlore lattice. The corner sharing plaquette structure leads to a hugely degenerate ground state, and no magnetic order, for classical sp
Externí odkaz:
http://arxiv.org/abs/1608.02929
Autor:
Swain, Nyayabanta, Majumdar, Pinaki
Publikováno v:
EPL (Europhysics Letters) 119, 17004 (2017)
The rare-earth based pyrochlore molybdates involve orbitally degenerate electrons Hund's coupled to local moments. The large Hund's coupling promotes ferromagnetism, the superexchange between the local moments prefers antiferromagnetism, and Hubbard
Externí odkaz:
http://arxiv.org/abs/1606.06277
Publikováno v:
Phys. Rev. B 94, 155119 (2016)
The pyrochlore lattice involves corner sharing tetrahedra and the resulting geometric frustration is believed to suppress any antiferromagnetic order for Mott insulators on this structure. There are nevertheless short-range correlations which could b
Externí odkaz:
http://arxiv.org/abs/1505.03502