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Pressure dependence of the charge-density-wave and superconducting states in GdTe$_3$, TbTe$_3$ and DyTe$_3$

Autor: Zocco, D. A., Hamlin, J. J., Grube, K., Chu, J. -H., Kuo, H. -H., Fisher, I. R., Maple, M. B.

Publikováno v: Phys. Rev. B 91, 205114 (2015)

We present electrical resistivity and ac-susceptibility measurements of GdTe$_3$, TbTe$_3$ and DyTe$_3$ performed under pressure. An upper charge-density-wave (CDW) is suppressed at a rate of $\mathrm{d}T_{\mathrm{CDW,1}}/\mathrm{d}P$ = $-$85 K/GPa.

Externí odkaz: http://arxiv.org/abs/1504.07190

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Origin of the resistive anisotropy in the electronic nematic phase of BaFe$_2$As$_2$ revealed by optical spectroscopy

Autor: Mirri, C., Dusza, A., Bastelberger, S., Chinotti, M., Chu, J. -H., Kuo, H. -H., Fisher, I. R., Degiorgi, L.

Publikováno v: Phys. Rev. Lett. 115, 107001 (2015)

We perform, as a function of uniaxial stress, an optical-reflectivity investigation of the representative 'parent' ferropnictide BaFe$_2$As$_2$ in a broad spectral range, across the tetragonal-to-orthorhombic phase transition and the onset of the lon

Externí odkaz: http://arxiv.org/abs/1504.06829

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Magneto-elastically coupled structural, magnetic and superconducting order parameters in BaFe$_{2}$(As$_{1-x}$P$_{x}$)$_{2}$

Autor: Kuo, H-. H., Analytis, James G., Chu, J. -H., Fernandes, R. M., Schmalian, J., Fisher, I. R.

We measure the transport properties of mechanically strained single crystals of BaFe$_{2}$(As$_{1-x}$P$_{x}$)$_{2}$ over a wide range of $x$. The N\'eel transition is extremely sensitive to stress and this sensitivity increases as optimal doping is a

Externí odkaz: http://arxiv.org/abs/1207.3858

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Resonant Enhancement of Charge Density Wave Diffraction in the Rare-Earth Tritellurides

Autor: Lee, W. S., Sorini, A. P., Yi, M., Chuang, Y. D., Moritz, B., Yang, W. L., Chu, J. -H., Kuo, H. H., Gonzalez, A. G. Cruz, Fisher, I. R., Hussain, Z., Devereaux, T. P., Shen, Z. X.

Publikováno v: Phys. Rev. B 85, 155142 (2012)

We performed resonant soft X-ray diffraction on known charge density wave (CDW) compounds, rare earth tri-tellurides. Near the $M_5$ (3d - 4f) absorption edge of rare earth ions, an intense diffraction peak is detected at a wavevector identical to th

Externí odkaz: http://arxiv.org/abs/1205.0051

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Susceptibility anisotropy in an iron arsenide superconductor revealed by x-ray diffraction in pulsed magnetic fields

Autor: Ruff, J. P. C., Chu, J. -H., Kuo, H. -H., Das, R. K., Nojiri, H., Fisher, I. R., Islam, Z.

Publikováno v: Phys. Rev. Lett. 109, 027004 (2012)

In addition to unconventional high-Tc superconductivity, the iron arsenides exhibit strong magnetoelastic coupling and a notable electronic anisotropy within the a-b plane. We relate these properties by studying underdoped Ba(Fe{1-x}Co{x})2As2 by x-r

Externí odkaz: http://arxiv.org/abs/1204.5693

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Temperature dependence of the excitation spectrum in the charge-density-wave ErTe$_3$ and HoTe$_3$ systems

Autor: Pfuner, F., Lerch, P., Chu, J. -H., Kuo, H. -H., Fisher, I. R., Degiorgi, L.

Publikováno v: Phys. Rev. B81, 195110 (2010)

We provide optical reflectivity data collected over a broad spectral range and as a function of temperature on the ErTe$_3$ and HoTe$_3$ materials, which undergo two consecutive charge-density-wave (CDW) phase transitions at $T_{CDW1}$= 265 and 288 K

Externí odkaz: http://arxiv.org/abs/1003.0647

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