Zobrazeno 1 - 10
of 117
pro vyhledávání: '"Tu, J. J."'
Autor:
Xi, Xiaoxiang, Smith, R. J., Stanislavchuk, T. N., Sirenko, A. A., Gilbert, S. N., Tu, J. J., Carr, G. L.
The high brightness, broad spectral coverage and pulsed characteristics of infrared synchrotron radiation enable time-resolved spectroscopy under throughput-limited optical systems, as can occur with the high-field magnet cryostat systems used to stu
Externí odkaz:
http://arxiv.org/abs/1408.1650
Publikováno v:
Scientific Reports 3, 3446 (2013)
Fermi liquid theory is remarkably successful in describing the transport and optical properties of metals; at frequencies higher than the scattering rate, the optical conductivity adopts the well-known power law behavior $\sigma_1(\omega) \propto \om
Externí odkaz:
http://arxiv.org/abs/1312.4466
Autor:
Tu, J. J., Li, J., Liu, W., Punnoose, A., Gong, Y., Ren, Y. H., Li, L. J., Cao, G. H., Xu, Z. A., Homes, C. C.
Publikováno v:
Phys. Rev. B 82, 174509 (2010) [10 pages]
The transport and complex optical properties of the electron-doped iron-arsenic superconductor BaFe1.85Co0.15As2 with Tc = 25 K have been examined in the Fe-As planes above and below Tc. A Bloch-Gruneisen analysis of the resistivity yields a weak ele
Externí odkaz:
http://arxiv.org/abs/1008.3098
Publikováno v:
Phys. Rev. B 80, 180502(R) (2009)
The detailed optical properties of BaFe2As2 have been determined over a wide frequency range above and below the structural and magnetic transition at T_N = 138 K. A prominent in-plane infrared-active mode is observed at 253 cm^{-1} (31.4 meV) at 295
Externí odkaz:
http://arxiv.org/abs/0910.1565
We have combined temperature dependent local structural measurements with first principles density functional calculations to develop a three dimensional local structure model of the misfit system [Ca2CoO3][CoO2]1.61 (referred to as Ca3Co4O9) which h
Externí odkaz:
http://arxiv.org/abs/0811.0628
he frequency dependence in the mid IR from 900 to 1100 cm$^{-1}$ and far IR at 84 cm$^{-1}$ and temperature dependence from 35 to 330 K of the normal state Hall transport is reported in single crystal, optimally doped Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta
Externí odkaz:
http://arxiv.org/abs/cond-mat/0611018
Autor:
Dordevic, S. V., Homes, C. C., Tu, J. J., Valla, T., Strongin, M., Johnson, P. D., Gu, G. D., Basov, D. N.
Publikováno v:
Phys. Rev. B 71, 104529 (2005).
We present a new method of extracting electron-boson spectral function $\alpha^2$F($\omega$) from infrared and photoemission data. This procedure is based on inverse theory and will be shown to be superior to previous techniques. Numerical implementa
Externí odkaz:
http://arxiv.org/abs/cond-mat/0411043
Autor:
Lobo, R. P. S. M., Tu, J. J., Choi, Eun-Mi, Kim, Hyeong-Jin, Kang, W. N., Lee, Sung-Ik, Carr, G. L.
We studied the far-infrared reflectance of superconducting MgB2 in and out of equilibrium using pulsed synchrotron radiation. The equilibrium data can be described by a single energy gap at 2 Delta / hc = 43 cm-1. The fit improves slightly at lower f
Externí odkaz:
http://arxiv.org/abs/cond-mat/0404708
Autor:
Lobo, R. P. S. M., Elsen, M., Monod, P., Tu, J. J., Choi, Eun-Mi, Kim, Hyeong-Jin, Kang, W. N., Lee, Sung-Ik, Cava, R. J., Carr, G. L.
Publikováno v:
New Challenges in Superconductivity: Experimental Advances and Emerging Theories, pp. 243-248. NATO Science Series II, Springer (2005)
The scattering process responsible for connecting the bands remains one of the last open questions on the physical properties of MgB2. Through the analysis of the equilibrium and photo-induced far-infrared properties as well as electron spin resonanc
Externí odkaz:
http://arxiv.org/abs/cond-mat/0404382
The optical properties of optimally-doped Bi_2Sr_2CaCu_2O_{8+\delta} (Bi2212) have been measured normal to the edge planes [ac plane, bc plane, and (1\bar{1}0) plane], for light polarized parallel to nodal and anti-nodal (gap) directions, respectivel
Externí odkaz:
http://arxiv.org/abs/cond-mat/0307582