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- W1957329857 abstract "We study the low-temperature thermal conductivity (kappa) of Dy_2Ti_2O_7 and Yb_2Ti_2O_7 single crystals in magnetic fields up to 14 T along the [111], [100] and [110] directions. The main experimental findings for Dy_2Ti_2O_7 are: (i) the low-T kappa(H) isotherms exhibit not only the step-like decreases at the low-field (< 2 T) magnetic transitions but also obvious field dependencies in high fields (> 7 T); (ii) at T le 0.5 K, the kappa(H) curves show anisotropic irreversibility in low fields, that is, the kappa(H) hysteresis locates at the first-order transition with H parallel [100] and [110], while it locates between two successive transitions with H parallel [111]; (iii) the kappa in the hysteresis loops for H parallel [100] and [110] show an extremely slow relaxation with the time constant of sim 1000 min. The main experimental findings for Yb_2Ti_2O_7 are: (i) the zero-field kappa(T) show a kink-like decrease at the first-order transition (sim 200 mK) with decreasing temperature; (ii) the low-T kappa(H) isotherms show a decrease in low field and a large enhancement in high fields; (iii) the low-T kappa(H) curves show a sharp minimum at 0.5 T for H parallel [110] and [111]. The roles of monopole excitations, field-induced transitions, spin fluctuations and magnetoelastic coupling are discussed." @default.
- W1957329857 created "2016-06-24" @default.
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- W1957329857 date "2015-09-04" @default.
- W1957329857 modified "2023-09-29" @default.
- W1957329857 title "Low-temperature thermal conductivity of<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mrow><mml:msub><mml:mi>Dy</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>Ti</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi mathvariant=normal>O</mml:mi><mml:mn>7</mml:mn></mml:msub></mml:mrow></mml:math>and<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mrow><mml:msub><mml:mi>Yb</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>Ti</mml:mi><mml:mn>2</mml:mn></…" @default.
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- W1957329857 doi "https://doi.org/10.1103/physrevb.92.094408" @default.
- W1957329857 hasPublicationYear "2015" @default.
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