English
Related papers

Related papers: Magnetothermal study of Dy Stuffed Spin Ice: Dy2(D…

200 papers

The interplay between spin-orbit coupling (SOC) and electron correlation ($U$) is considered for many exotic phenomena in iridium oxides. We have investigated the evolution of structural, magnetic and electronic properties in pyrochlore…

Strongly Correlated Electrons · Physics 2017-03-08 Harish Kumar , R. S. Dhaka , A. K. Pramanik

We present a detailed theoretical overview of the thermodynamic properties of the dipolar spin ice model, which has been shown to be an excellent quantitative descriptor of the Ising pyrochlore materials Dy_2Ti_2O_7 and Ho_2Ti_2O_7. We show…

Disordered Systems and Neural Networks · Physics 2015-06-24 Roger G. Melko , Matthew Enjalran , Byron C. den Hertog , Michel. J. P. Gingras

We have investigated the kagom\'{e} ice state in the frustrated pyrochlore oxide Dy_{2}Ti_{2}O_{7} under magnetic field along a [111] axis. Spin correlations have been measured by neutron scattering and analyzed by Monte-Carlo simulation.…

Disordered Systems and Neural Networks · Physics 2007-05-23 Y. Tabata , H. Kadowaki , K. Matsuhira , Z. Hiroi , N. Aso , E. Ressouche , B. Fak

In this Comment we argue that Ho$_2$Ti$_2$O$_7$ does not exhibit a transition to a partially ordered state unlike what is argued in PRL 83, 1854 (1999), that it exhibits spin ice behavior, and that the experimental specific heat data by…

Disordered Systems and Neural Networks · Physics 2016-08-31 B. C. den Hertog , Michel J. P. Gingras , Steven T. Bramwell , Mark J. Harris

Recent work has highlighted remarkable effects of classical thermal fluctuations in the dipolar spin ice compounds, such as "artificial magnetostatics", manifesting as Coulombic power-law spin correlations and particles behaving as…

Strongly Correlated Electrons · Physics 2011-10-11 Kate A. Ross , Lucile Savary , Bruce D. Gaulin , Leon Balents

Spin freezing in the $A$-site spinel FeAl$_2$O$_4$ which is a spin liquid candidate is studied using remnant magnetization and nonlinear magnetic susceptibility and isofield cooling and heating protocols. The remnant magnetization behavior…

Disordered Systems and Neural Networks · Physics 2015-06-23 Harikrishnan S. Nair , Ramesh Kumar K. , Andre M. Strydom

We report structural and magnetic properties studies of large high quality single-crystals of the frustrated magnet, Nd$_2$Zr$_2$O$_7$. Powder x-ray diffraction analysis confirms that Nd$_2$Zr$_2$O$_7$ adopts the pyrochlore structure.…

Strongly Correlated Electrons · Physics 2015-05-18 M. Ciomaga Hatnean , M. R. Lees , O. A. Petrenko , D. S. Keeble , G. Balakrishnan , M. J. Gutmann , V. V. Klekovkina , B. Z. Malkin

Neutron scattering has been used to study the magnetic order and spin dynamics of the colossal magnetoresistive pyrochlore Tl_2Mn_2O_7. On cooling from the paramagnetic state, magnetic correlations develop and appear to diverge at T_C (123…

Strongly Correlated Electrons · Physics 2009-10-31 J. W. Lynn , L. Vasiliu-Doloc , M. A. Subramanian

We use polarized inelastic neutron scattering to study the temperature and energy dependence of spin space anisotropies in the optimally hole-doped iron pnictide Ba$_{0.67}$K$_{0.33}$Fe$_{2}$As$_{2}$ ($T_{{\rm c}}=38$ K). In the…

We investigate the transport properties of itinerant electrons interacting with a background of localized spins in a correlated paramagnetic phase of the pyrochlore lattice. We find a residual resistivity at zero temperature due to the…

Strongly Correlated Electrons · Physics 2013-04-04 Gia-Wei Chern , Saurabh Maiti , Rafael M. Fernandes , Peter Wölfle

We investigate the temperature dependence of the spin dynamics in the pyrochlore magnet Nd$_2$Zr$_2$O$_7$ by neutron scattering experiments. At low temperature, this material undergoes a transition towards an "all in - all out"…

Strongly Correlated Electrons · Physics 2021-07-22 M. Léger , E. Lhotel , M. Ciomaga Hatnean , J. Ollivier , A. R. Wildes , S. Raymond , E. Ressouche , G. Balakrishnan , S. Petit

We present an interpretation of zero field diffuse neutron scattering and of high field magnetisation data at very low temperature in the frustrated pyrochlore system Tb2Ti2O7. This material has antiferromagnetic exchange interactions and…

Strongly Correlated Electrons · Physics 2013-12-16 P. Bonville , A. Gukasov , I. Mirebeau , S. Petit

We report a $\mu$SR study in a Y$_2$Ti$_2$O$_7$ single crystal. We observe slow local field fluctuations at low temperature which become faster as the temperature is increased. Our analysis suggests that muon diffusion is present in this…

Strongly Correlated Electrons · Physics 2015-06-15 J. A. Rodriguez , A. Yaouanc , B. Barbara , E. Pomjakushina , P. Quémerais , Z. Salman

A series of polycrystalline samples of Sr2-xIrO4 have been synthesized by a solid-state reaction method. The crystal structure of this doped system can be explained on the basis of the extended nature of 5d electrons and strontium vacancies…

Strongly Correlated Electrons · Physics 2016-11-09 Jimei Kong , S. L. Liu , Jie Cheng , Haiyun Wang , Xing ao Li , Z. H. Wang

A spin-ice compound dysprosium titanate, Dy2Ti2O7, is studied by specific heat measurements in magnetic fields applied along the [110] direction of the cubic unit cell. Above a magnetic field of 0.4 T a relatively sharp peak at T = 1.1 K in…

Materials Science · Physics 2009-11-10 Zenji Hiroi , Kazuyuki Matsuhira , Masao Ogata

The spin-liquid phase of two highly frustrated pyrochlore magnets Gd2Ti2O7 and Gd2Sn2O7 is probed using electron spin resonance in the temperature range 1.3 - 30 K. The deviation of the absorption line from the paramagnetic position \nu…

Strongly Correlated Electrons · Physics 2013-05-29 S. S. Sosin , L. A. Prozorova , A. I. Smirnov , P. Bonville , G. Jasmin - Le Bras , O. A. Petrenko

We report the observation of metal-like to insulator transition (MTI) in the 3dpyrochlore oxide Tb2Ti2O7 at 603 K due to the interaction of empty 3d orbitals of Ti4+ with O2- ions, evidenced by the transition in resistivity. Magnetisation,…

Materials Science · Physics 2020-07-28 B. Santhosh Kumar , C. Venkateswaran

We have investigated the effect of Cu substitution in Eu2(Ir1-xCux)2O7 with the help of magnetic and transport property measurements. XPS measurement reveals that each Cu2+ converts Ir4+ to double amount of Ir5+ ions. The metal-insulator…

Strongly Correlated Electrons · Physics 2022-04-20 Sampad Mondal , M. Modak , B. Maji , Swapan K. Mandal , B. Ghosh , Surajit Saha , M. Sardar , S. Banerjee

The rare earth pyrochlore magnet Yb2Ti2O7 is among a handful of materials that apparently exhibit no long range order down to the lowest explored temperatures and well below the Curie-Weiss temperature. Paramagnetic neutron scattering on a…

Statistical Mechanics · Physics 2011-04-11 J. D. Thompson , P. A. McClarty , M. J. P. Gingras

We present specific heat data on three samples of the dilute Ising magnet $\HoYLF$ with $x = 0.018$, 0.045 and 0.080. Previous measurements of the ac susceptibility of an $x = 0.045$ sample showed the Ho$^{3+}$ moments to remain dynamic…

Disordered Systems and Neural Networks · Physics 2009-11-11 J. A. Quilliam , C. G. A. Mugford , A. Gomez , S. W. Kycia , J. B. Kycia