J. K. Dong

Quantum criticality and nodal superconductivity in the FeAs-based superconductor KFe2As2 (2009)

Dong, J. K., Zhou, S. Y., Guan, T. Y., Zhang, H., Dai, Y. F., Qiu, X., ...

When superconductivity emerges with the suppression of magnetism, for example in heavy-fermion and high-temperature cuprate superconductors, the spin fluctuations associated with a magnetic quantum...

Thermal conductivity study of KFe$_2$As$_2$ single crystal: clear evidence for unconventional superconducting gap with nodes (2009)

Dong, J. K., Zhou, S. Y., Guan, T. Y., Zhang, H., Dai, Y. F., Qiu, X., ...

The in-plane resistivity $\rho$ and thermal conductivity $\kappa$ of extremely overdoped KFe$_2$As$_2$ ($T_c$ = 3.0 K) single crystal were studied. It is found that $\rho \sim T^{1.5}$ at low...

Heat transport in overdoped BaFe$_{1.73}$Co$_{0.27}$As$_2$: an exotic multigap nodeless superconductor as evidence for interband superconductivity (2009)

Dong, J. K., Zhou, S. Y., Guan, T. Y., Qiu, X., Zhang, C., Cheng, P., ...

The in-plane thermal conductivity $\kappa$ of overdoped FeAs-based superconductor BaFe$_{1.73}$Co$_{0.27}$As$_2$ ($T_c$ = 8.1 K) single crystal was measured down to 80 mK. In zero field, the residual...

Multi-gap nodeless superconductivity in iron selenide FeSe$_x$: evident from quasiparticle heat transport (2009)

Dong, J. K., Guan, T. Y., Zhou, S. Y., Qiu, X., Ding, L., Zhang, C., ...

The in-plane thermal conductivity $\kappa$ of the iron selenide superconductor FeSe$_x$ ($T_c$ = 8.8 K) were measured down to 120 mK and up to 14.5 T ($\simeq 3/4 H_{c2}$). In zero field, the...

Nodeless superconducting gap in electron-doped BaFe$_{1.9}$Ni$_{0.1}$As$_2$ probed by quasiparticle heat transport (2009)

Ding, L., Dong, J. K., Zhou, S. Y., Guan, T. Y., Qiu, X., Zhang, C., ...

The in-plane thermal conductivity $\kappa$ of electron-doped iron-arsenide superconductor BaFe$_{1.9}$Ni$_{0.1}$As$_2$ ($T_c$ = 20.3 K) single crystal was measured down to 70 mK. In zero field, the...

Thermodynamic properties of Ba1-xMxFe2As2 (M = La and K) (2008)

Dong, J. K., Ding, L., Wang, H., Wang, X. F., Wu, T., Chen, X. H., ...

The specific heat $C(T)$ of BaFe$_2$As$_2$ single crystal, electron-doped Ba$_{0.7}$La$_{0.3}$Fe$_2$As$_2$ and hole-doped Ba$_{0.5}$K$_{0.5}$Fe$_2$As$_2$ polycrystals were measured. For undoped...

Primary role of the barely occupied states in the charge density wave formation of NbSe2 (2008)

Shen, D. W., Zhang, Y., Yang, L. X., Wei, J., Ou, H. W., Dong, J. K., ...

NbSe2 is a prototypical charge-density-wave (CDW) material, whose mechanism remains mysterious so far. With angle resolved photoemission spectroscopy, we mapped out the CDW gap and recovered the...

Specific heat of the iron-based high-$T_c$ superconductor SmO$_{1-x}$F$_x$FeAs (2008)

Ding, L., He, C., Dong, J. K., Wu, T., Liu, R. H., Chen, X. H., ...

The specific heat $C(T)$ of new iron-based high-$T_c$ superconductor SmO$_{1-x}$F$_x$FeAs ($0 \leq x \leq 0.2$) was systematically studied. For undoped $x$ = 0 sample, a specific heat jump was...

Evolution of the Electronic Structure of 1T-CuxTiSe2 (2006)

Zhao, J. F., Ou, H. W., Wu, G., Xie, B. P., Zhang, Y., Shen, D. W., ...

The electronic structure of a new charge-density-wave/ superconductor system, 1T-CuxTiSe2, has been studied by photoemission spectroscopy. A correlated semiconductor band structure is revealed for...