Strong magnetic frustration and anti-site disorder causing spinglass behavior in honeycomb Li2RhO3

Katukuri, Vamshi M.; Satoshi Nishimoto; Rousochatzakis, Ioannis; Stoll, Hermann; van den Brink, Jeroen; Liviu Hozoi
October 2015
Scientific Reports;10/9/2015, p1
Academic Journal
With large spin-orbit coupling, the t2g5 electron configuration in d-metal oxides is prone to highly anisotropic exchange interactions and exotic magnetic properties. In 5d5 iridates, given the existing variety of crystal structures, the magnetic anisotropy can be tuned from antisymmetric to symmetric Kitaev-type, with interaction strengths that outsize the isotropic terms. By many-body electronicstructure calculations we here address the nature of the magnetic exchange and the intriguing spinglass behavior of Li2RhO3, a 4d5 honeycomb oxide. For pristine crystals without Rh-Li site inversion, we predict a dimerized ground state as in the isostructural 5d5 iridate Li2IrO3, with triplet spin dimers effectively placed on a frustrated triangular lattice. With Rh-Li anti-site disorder, we explain the observed spin-glass phase as a superposition of different, nearly degenerate symmetry-broken configurations.


Related Articles

  • Phenomenological analysis of the s-d exchange interaction in dilute Cu-Mn alloy at helium temperature. AL-Jalali, M. A. // Advanced Materials Letters;Jan2014, Vol. 5 Issue 1, p14 

    The S-d exchange interactions in dilute Cu-Mn alloys was studied on concentration (C) varying between 10.5 and 2081.8 ppm of Mn in Cu within the (0.03K-4.2K) temperature range. Using electrical resistivity data on those alloys, the s-d exchange integral (Jsd), which is negative, has calculated...

  • Effective Anisotropy Constant of Bilayer Film. Afremov, Leonid; Anisimov, Sergey; Agapova, Tamara // Advanced Materials Research;2014, Issue 887-888, p779 

    A reasonable composition of different kinds of magnetic anisotropy of bilayer film has been carried out. The criterium of magnetic uniaxiality of bilayer film contained the first-order and the second-order crystallographic anisotropy has been defined. It has been demonstrated that the effective...

  • Imaging of spin waves in atomically designed nanomagnets. Spinelli, A.; Bryant, B.; Delgado, F.; Fernández-Rossier, J.; Otte, A. F. // Nature Materials;Aug2014, Vol. 13 Issue 8, p782 

    The spin dynamics of all ferromagnetic materials are governed by two types of collective phenomenon: spin waves and domain walls. The fundamental processes underlying these collective modes, such as exchange interactions and magnetic anisotropy, all originate at the atomic scale. However,...

  • Method of averaging over interaction fields for constructing the fixed-scale renormalization group transformation. Semkin, S.; Smagin, V. // Physics of the Solid State;May2013, Vol. 55 Issue 5, p970 

    The application of the method of averaging over exchange interaction fields to clusters consisting of two magnetic atoms in the Ising model using a simple lattice has been considered. A version of the fixed-scale renormalization group transformation has been constructed. The application of these...

  • Magnetic state controllable critical temperature in epitaxial Ho/Nb bilayers. Yuanzhou Gu; Robinson, J. W. A.; Bianchetti, M.; Stelmashenko, N. A.; Astill, D.; Grosche, F. M.; MacManus-Driscoll, J. L.; Blamire, M. G. // APL Materials;2014, Vol. 2 Issue 4, p1 

    We study the magnetic properties of Ho thin films with different crystallinity (either epitaxial or non-epitaxial) and investigate their proximity effects with Nb thin films. Magnetic measurements show that epitaxial Ho has large anisotropy in two different crystal directions in contrast to...

  • Micromagnetic Study of Exchange Interaction Effect on Magnetization Reversal Mode of CoFeAl. Nurul Azizah, Umi Muflihatun; Trihandaru, Suryasatriya; Wibowo, Nur Aji // AIP Conference Proceedings;2016, Vol. 1710 Issue 1, p1 

    A magnetization switching dynamics of perpendicular magnetic anisotropy material CoFeAl has been simulated. This simulation was conducted using Landau-Lifshift Gilbert equation. The used magnetic parameters are magnetic anisotropy 2.3 ? 106 erg/cm3, magnetic saturation 10 kG, medium Gilbert...

  • New physics in frustrated magnets: Spin ices, monopoles, etc. (Review Article). Zvyagin, A. A. // Low Temperature Physics;Nov2013, Vol. 39 Issue 11, p901 

    During recent years the interest to frustrated magnets has grown considerably. Such systems reveal very peculiar properties which distinguish them from standard paramagnets, magnetically ordered regular systems (like ferro-, ferri-, and antiferromagnets), or spin glasses. In particular great...

  • Irreversibility and anisotropy of the low-temperature magnetization in manganites. Spin-glass polyamorphism. Sirenko, V. A.; Eremenko, V. V. // Low Temperature Physics;Feb2014, Vol. 40 Issue 2, p179 

    The temperature dependences of the magnetization in manganites of different composition and structural morphology were measured in two cooling regimes, field cooling (FC) and zero-field cooling (ZFC), for two different orientations of a magnetic field, parallel and perpendicular to the c-axis....

  • Magnetocrystalline anisotropy of ε-Fe2O3. Ahamed, Imran; Pathak, Rohit; Skomski, Ralph; Kashyap, Arti // AIP Advances;May2018, Vol. 8 Issue 5, pN.PAG 

    The epsilon Fe2O3 phase of iron oxide has been studied to understand the spin structure and the magnetocrystalline anisotropy in the bulk and in thin films of ε-Fe2O3 and Co-doped ε-Fe2O3. The preferential magnetization direction in the nanoparticles of...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics