Phase diagram of the Shastry-Sutherland Kondo lattice model with classical localized spins: a variational calculation study
We study the Shastry-Sutherland Kondo lattice model with additional Dzyaloshinskii–Moriya (DM) interactions, exploring the possible magnetic phases in its multi-dimensional parameter space. Treating the local moments as classical spins and using a variational ansatz, we identify the parameter ranges...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2017
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| Online Access: | https://hdl.handle.net/10356/85614 http://hdl.handle.net/10220/43772 |
| _version_ | 1811694701784334336 |
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| author | Shahzad, Munir Sengupta, Pinaki |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Shahzad, Munir Sengupta, Pinaki |
| author_sort | Shahzad, Munir |
| collection | NTU |
| description | We study the Shastry-Sutherland Kondo lattice model with additional Dzyaloshinskii–Moriya (DM) interactions, exploring the possible magnetic phases in its multi-dimensional parameter space. Treating the local moments as classical spins and using a variational ansatz, we identify the parameter ranges over which various common magnetic orderings are potentially stabilized. Our results reveal that the competing interactions result in a heightened susceptibility towards a wide range of spin configurations including longitudinal ferromagnetic and antiferromagnetic order, coplanar flux configurations and most interestingly, multiple non-coplanar configurations including a novel canted-flux state as the different Hamiltonian parameters like electron density, interaction strengths and degree of frustration are varied. The non-coplanar and non-collinear magnetic ordering of localized spins behave like emergent electromagnetic fields and drive unusual transport and electronic phenomena. |
| first_indexed | 2024-10-01T07:11:46Z |
| format | Journal Article |
| id | ntu-10356/85614 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:11:46Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | ntu-10356/856142023-02-28T19:33:09Z Phase diagram of the Shastry-Sutherland Kondo lattice model with classical localized spins: a variational calculation study Shahzad, Munir Sengupta, Pinaki School of Physical and Mathematical Sciences Kondo lattice model Chiral magnetic states We study the Shastry-Sutherland Kondo lattice model with additional Dzyaloshinskii–Moriya (DM) interactions, exploring the possible magnetic phases in its multi-dimensional parameter space. Treating the local moments as classical spins and using a variational ansatz, we identify the parameter ranges over which various common magnetic orderings are potentially stabilized. Our results reveal that the competing interactions result in a heightened susceptibility towards a wide range of spin configurations including longitudinal ferromagnetic and antiferromagnetic order, coplanar flux configurations and most interestingly, multiple non-coplanar configurations including a novel canted-flux state as the different Hamiltonian parameters like electron density, interaction strengths and degree of frustration are varied. The non-coplanar and non-collinear magnetic ordering of localized spins behave like emergent electromagnetic fields and drive unusual transport and electronic phenomena. MOE (Min. of Education, S’pore) Accepted version 2017-09-20T07:18:20Z 2019-12-06T16:07:09Z 2017-09-20T07:18:20Z 2019-12-06T16:07:09Z 2017 Journal Article Shahzad, M., & Sengupta, P. (2017). Phase diagram of the Shastry-Sutherland Kondo lattice model with classical localized spins: a variational calculation study. Journal of Physics: Condensed Matter, 29(30), 305802-. 0953-8984 https://hdl.handle.net/10356/85614 http://hdl.handle.net/10220/43772 10.1088/1361-648X/aa73bb en Journal of Physics: Condensed Matter © 2017 IOP Publishing Ltd. This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of Physics: Condensed Matter, IOP Publishing Ltd. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1088/1361-648X/aa73bb]. 11 p. application/pdf |
| spellingShingle | Kondo lattice model Chiral magnetic states Shahzad, Munir Sengupta, Pinaki Phase diagram of the Shastry-Sutherland Kondo lattice model with classical localized spins: a variational calculation study |
| title | Phase diagram of the Shastry-Sutherland Kondo lattice model with classical localized spins: a variational calculation study |
| title_full | Phase diagram of the Shastry-Sutherland Kondo lattice model with classical localized spins: a variational calculation study |
| title_fullStr | Phase diagram of the Shastry-Sutherland Kondo lattice model with classical localized spins: a variational calculation study |
| title_full_unstemmed | Phase diagram of the Shastry-Sutherland Kondo lattice model with classical localized spins: a variational calculation study |
| title_short | Phase diagram of the Shastry-Sutherland Kondo lattice model with classical localized spins: a variational calculation study |
| title_sort | phase diagram of the shastry sutherland kondo lattice model with classical localized spins a variational calculation study |
| topic | Kondo lattice model Chiral magnetic states |
| url | https://hdl.handle.net/10356/85614 http://hdl.handle.net/10220/43772 |
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