Ou, H. W., Zhao, J. F., Zhang, Y., Xie, B. P., Shen, D. W., Zhu, Y., ...
The misfit oxide, Bi$_{2}$Ba$_{1.3}$K$_{0.6}$Co$_{2.1}$O$_{y}$, made of alternating rocksalt-structured [BiO/BaO] layers and hexagonal CoO$_{2}$ layers, was studied by angle-resolved photoemission...
Luo, X. G., Chen, H., Wang, G. Y., Wu, G., Wu, T., Zhao, L., ...
Resistivity under magnetic field, thermopower and Hall coefficient are systematically studied for [Bi$_2$Ba$_{1.3}$K$_{0.6}$Co$_{0.1}$]$^{RS}$[CoO$_2$]$_{1.97}$ single crystal. In-plane resistivity...
Intergrowth and thermoelectric properties in the Bi-Ca-Co-O system (2007)
Luo, X. G., Jing, Y. C., Chen, H., Chen, X. H.
Single crystals of the Bi-Ca-Co-O system have been grown using the flux method with cooling from 900$\celsius$ and 950$\celsius$, respectively. The single crystals are characterized by transmission...
Origin of superconductivity in nominally "undoped" T'-La$_{2-x}$Y$_{x}$CuO$_{4}$ films (2007)
Zhao, L., Liu, R. H., Wu, G., Wang, G. Y., Wu, T., Luo, X. G., ...
We have systematically studied the transport properties of the La$_{2-x}$Y$_{x}$CuO$_{4}$(LYCO) films of T'-phase ($0.05\leq x \leq 0.30$). In this nominally "undoped" system, superconductivity was...
Magnetic field induced spin-flop transition in Na$_x$CoO$_2$ (0.5$ (2007)
Wu, T., Fang, D. F., Wang, G. Y., Zhao, L., Wu, G., Luo, X. G., ...
The isothermal magnetoresistance (MR) with magnetic field (H) parallel to and perpendicular to ab plane is systematically studied on the single crystal Na$_{0.52}$CoO$_2$ with charge ordering at...
Transport properties in Cu$_{x}$TiSe$_{2}$ (0.015$\leq$x$\leq$0.110) Single Crystal (2007)
Wu, G., Yang, H. X., Zhao, L., Luo, X. G., Wu, T., Wang, G. Y., ...
Transport properties are systematically studied for the single crystals Cu$_{x}$TiSe$_{2}$ (0.015$\leq$x$\leq$0.110). Both of in-plane and out-of-plane resistivity show the coexistence of...
Novel dynamical effects and glassy response in strongly correlated electronic system (2007)
Wang, G. Y., Chen, X. H., Wu, T., Luo, X. G., Zhang, W. T., Wu, G.
We find an unconventional nucleation of low temperature paramagnetic metal (PMM) phase with monoclinic structure from the matrix of high-temperature antiferromagnetic insulator (AFI) phase with...
Wang, G. Y., Chen, X. H., Wu, T., Wu, G., Luo, X. G., Wang, C. H.
We systematically investigate effect of oxygen isotope in $(Pr_{1-x}Sm_x)_{0.7}Ca_{0.3}CoO_3$ which shows a crossover with x from ferromagnetic metal to the insulator with spin-state transition. A...
In-plane ferromagnetism in charge-ordering $Na_{0.55}CoO_2$ (2005)
Wang, C. H., Chen, X. H., Wu, T., Luo, X. G., Wang, G. Y., Luo, J. L.
The magnetic and transport properties are systematically studied on the single crystal $Na_{0.55}CoO_2$ with charge ordering and divergency in resistivity below 50 K. A long-range ferromagnetic...
Wang, G. Y., Wu, T., Luo, X. G., Wang, W., Chen, X. H.
Oxygen isotope substitution is performed in the perovskite cobalt oxide (Pr$_{0.7}$Sm$_{0.3}$)$_{0.7}$Ca$_{0.3}$CoO${_3}$ which shows a sharp spin state transition from the intermediate spin (IS)...
Luo, X. G., Li, X., Wang, G. Y., Wu, G., Chen, X. H.
Resistivity and dc magnetization measurements were performed for the polycrystalline Pr$_{0.5}$Ca$_{0.5}$Co$_{1-x}$Fe$_{x}$O$_{3-\delta}$ ($x$ = 0, 0.05, 0.10 and 0.15) samples. The as-fabricated...
Wang, C. H., Wang, G. Y., Wu, T., Feng, Z., Luo, X. G., Chen, X. H.
Hall coefficient $R_H$ and thermoelectric power TEP are studied systematically in the single crystals $Nd_{2-x}Ce_xCuO_{4+\delta}$ (NCCO) with different x from underdoped to overdoped regime. With...
Magnetic and transport properties in Gd$_{1-x}$Sr$_x$CoO$_{3}$ ($x$= 0.10-0.70) (2005)
Luo, X. G., Li, H., Chen, X. H., Xiong, Y. M., Wang, G. Y., Wang, C. H., ...
Magnetic and transport properties of polycrystalline Gd$_{1-x}$Sr$_x$CoO$_{3}$ ($x$= 0.10-0.70) are investigated systemically. Cluster-glass magnetism for $x \leq$ 0.45 and long-range ferromagnetic...
Hysteresis and Anisotropic Magnetoresistance in Antiferromagnetic $Nd_{2-x}Ce_xCuO_{4}$ (2004)
Chen, X. H., Wang, C. H., Wang, G. Y., Luo, X. G., Luo, J. L., Liu, G. T., ...
The out-of-plane resistivity ($\rho_c$) and magnetoresistivity (MR) are studied in antiferromangetic (AF) $Nd_{2-x}Ce_xCuO_{4}$ single crystals, which have three types of noncollinear...
Anomalous Magnetoresistance in Pb-doped Bi$_2$Sr$_2$Co$_2$O$_y$ Single Crystals (2004)
Luo, X. G., Chen, X. H., Wang, G. Y., Wang, C. H., Li, X., Miao, W. J., ...
Magnetoresistance (MR) of the Bi$_{2-x}$Pb$_x$Sr$_2$Co$_2$O$_y$ ($x$=0, 0.3, 0.4) single crystals is investigated systematically. A nonmonotonic variation of the isothermal in-plane and out-of-plane...
Luo, X. G., Chen, X. H., Wang, G. Y., Wang, C. H., Xiong, Y. M., Song, H. B., ...
Transport property is investigated in [Ca$_{2}$CoO$_{3-\delta}$]$_{0.62}$[CoO$_{2}$] single crystals obtained by varying annealing conditions. The $\rho_{ab}(T)$ exhibits a resistivity minimum, and...
Dimensional crossover and anomalous magnetoresistivity in single crystals $Na_xCoO_2$ (2004)
Wang, C. H., Chen, X. H., Luo, J. L., Liu, G. T., Lu, X. X., Zhang, H. T., ...
The in-plane ($\rho_{ab}$) and c-axis ($\rho_c$) resistivities, and the magnetoresistivity of single crystals $Na_xCoO_2$ with x = 0.7, 0.5 and 0.3 were studied systematically. $\rho_{ab}(T)$ shows...
Magnetic and Transport Properties in $CoSr_2Y_{1-x}Ca_xCu_2O_7$ ($x$=0$\sim$0.4) (2004)
Luo, X. G., Chen, X. H., Liu, X., Wang, R. T., Xiong, Y. M., Wang, C. H., ...
Magnetic and transport properties of $Co Sr_2 Y_{1-x} Ca_x Cu_2 O_7$ ($x=0 \sim 0.4$) system have been investigated. A broad maximum in M(T) curve, indicative of low-dimensional antiferromagnetic...
Infrared spectroscopy of the charge ordering transition in Na$_{0.5}$CoO$_2$ (2004)
Wang, N. L., Wu, Dong, Li, G., Chen, X. H., Wang, C. H., Luo, X. G.
We report infrared spectra of a Na$_{0.5}$CoO$_2$ single crystal which exhibits a sharp metal-insulator transition near 50 K due to the formation of charge ordering. In comparison with x=0.7 and 0.85...
Li, S. Y., Fan, R., Chen, X. H., Wang, C. H., Mo, W. Q., Ruan, K. Q., ...
The normal state resistivtity, upper critical field $H_{c2}$ and Hall coefficient $R_H$ in superconducting perovskite $MgCNi_3$ ($T_c \approx 8 K$) have been studied. Above 70 K, $\rho(T)$ fits well...