Numerical study of the Kitaev-Heisenberg chain
We study the one-dimensional Kitaev-Heisenberg model as a possible realization of magnetic degrees of freedom of the K-intercalated honeycomb-lattice ruthenium trichloride α-RuCl3, denoted as K0.5RuClm. First, we discuss the possible charge ordering pattern in K0.5RuClm, where half of the j=12 spins...
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| Veröffentlicht in: | Physica. B, Condensed matter Condensed matter, 2018-05, Vol.536, p.461-463 |
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| container_title | Physica. B, Condensed matter |
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| creator | Agrapidis, Cliò Efthimia van den Brink, Jeroen Nishimoto, Satoshi |
| description | We study the one-dimensional Kitaev-Heisenberg model as a possible realization of magnetic degrees of freedom of the K-intercalated honeycomb-lattice ruthenium trichloride α-RuCl3, denoted as K0.5RuClm. First, we discuss the possible charge ordering pattern in K0.5RuClm, where half of the j=12 spins are replaced by nonmagnetic ions in the honeycomb layer. Next, we investigate the low-energy excitations of the 1D Kitaev-Heisenberg model by calculating the dynamical spin structure factor using the Lanczos exact-diagonalization method. In the vicinity of Kitaev limit, there exist two well-separated dispersions. The bandwidth of each dispersion depends on the Heisenberg and Kitaev terms. This result may be relevant to the low-lying magnetic excitations of K0.5RuClm. |
| doi_str_mv | 10.1016/j.physb.2017.09.056 |
| format | Article |
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First, we discuss the possible charge ordering pattern in K0.5RuClm, where half of the j=12 spins are replaced by nonmagnetic ions in the honeycomb layer. Next, we investigate the low-energy excitations of the 1D Kitaev-Heisenberg model by calculating the dynamical spin structure factor using the Lanczos exact-diagonalization method. In the vicinity of Kitaev limit, there exist two well-separated dispersions. The bandwidth of each dispersion depends on the Heisenberg and Kitaev terms. 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This result may be relevant to the low-lying magnetic excitations of K0.5RuClm.</description><subject>Chlorides</subject><subject>Heisenberg theory</subject><subject>Honeycomb construction</subject><subject>Ions</subject><subject>K-intercalated RuCl3</subject><subject>Kitaev-Heisenberg chain</subject><subject>Lanczos method</subject><subject>Lattice theory</subject><subject>Low temperature physics</subject><subject>Magnetic fields</subject><subject>Numerical analysis</subject><subject>Ruthenium trichloride</subject><subject>Spin structure</subject><subject>Statistical models</subject><subject>Structure factor</subject><issn>0921-4526</issn><issn>1873-2135</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNp9kLtOwzAUhi0EEqXwBCyRmBN8ie14YEAVUEQFC8yW7RxTR21S7KRS3x5DmTnLWf7vXD6ErgmuCCbitqt260OyFcVEVlhVmIsTNCONZCUljJ-iGVaUlDWn4hxdpNThXESSGapepy3E4MymSOPUHorBF-MaipcwGtiXSwgJegvxs3BrE_pLdObNJsHVX5-jj8eH98WyXL09PS_uV6VjjIylNLUXxHjCLFO1A9kqUWNBhbAGe-eEagTlrRTcOts0ANxa5aXnqvbWQ8vm6OY4dxeHrwnSqLthin1eqSmWgubreZ1T7JhycUgpgte7GLYmHjTB-keM7vSvGP0jRmOls5hM3R0pyA_sA0SdXIDeQRsiuFG3Q_iX_wboZGx4</recordid><startdate>20180501</startdate><enddate>20180501</enddate><creator>Agrapidis, Cliò Efthimia</creator><creator>van den Brink, Jeroen</creator><creator>Nishimoto, Satoshi</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope></search><sort><creationdate>20180501</creationdate><title>Numerical study of the Kitaev-Heisenberg chain</title><author>Agrapidis, Cliò Efthimia ; van den Brink, Jeroen ; Nishimoto, Satoshi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c331t-7a4f61af13b394ce7d96406266ba0fcc698625d765bcb88ee5bb9f7f594fbfed3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Chlorides</topic><topic>Heisenberg theory</topic><topic>Honeycomb construction</topic><topic>Ions</topic><topic>K-intercalated RuCl3</topic><topic>Kitaev-Heisenberg chain</topic><topic>Lanczos method</topic><topic>Lattice theory</topic><topic>Low temperature physics</topic><topic>Magnetic fields</topic><topic>Numerical analysis</topic><topic>Ruthenium trichloride</topic><topic>Spin structure</topic><topic>Statistical models</topic><topic>Structure factor</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Agrapidis, Cliò Efthimia</creatorcontrib><creatorcontrib>van den Brink, Jeroen</creatorcontrib><creatorcontrib>Nishimoto, Satoshi</creatorcontrib><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Physica. 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| subjects | Chlorides Heisenberg theory Honeycomb construction Ions K-intercalated RuCl3 Kitaev-Heisenberg chain Lanczos method Lattice theory Low temperature physics Magnetic fields Numerical analysis Ruthenium trichloride Spin structure Statistical models Structure factor |
| title | Numerical study of the Kitaev-Heisenberg chain |
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