D. L. Sun

Symmetry and disorder of the vitreous vortex lattice in an overdoped BaFe_{2-x}Co_xAs_2 superconductor: Indication for strong single-vortex pinning (2009)

Inosov, D. S., Shapoval, T., Neu, V., Wolff, U., White, J. S., Haindl, S., ...

The disordered flux line lattice in single crystals of the slightly overdoped aFe_{2-x}Co_xAs_2 (x = 0.19, Tc = 23 K) superconductor is studied by magnetization measurements, small-angle neutron...

Self-energy effects and electron-phonon coupling in Fe-As superconductors (2009)

Lemmens, P., Eremin, I., Zwicknagl, G., Berger, H., Sun, G. L., ...

We report on Raman scattering experiments of the undoped SrFe2As2 and superconducting Sr0.85K0.15Fe2As2 (Tc=28K) and Ba0.72K0.28Fe2As2 (Tc=32K) single crystals. The frequency and linewidth of the B1g...

Large single crystal growth of BaFe1.87Co0.13As2 using a nucleation pole (2009)

Sun, D. L., Liu, Y., Park, J. T., Lin, C. T.

Co-doped iron arsenic single crystal of BaFe1.87Co0.13As2 with dimension up to 20 x 10 x 2 mm3 were grown by a nucleation pole: an alumina stick served as nucleation center during growth. The high...

Normal-State Spin Dynamics and Temperature-Dependent Spin Resonance Energy in an Optimally Doped Iron Arsenide Superconductor (2009)

Inosov, D. S., Park, J. T., Bourges, P., Sun, D. L., Sidis, Y., Schneidewind, A., ...

The proximity of superconductivity and antiferromagnetism in the phase diagram of iron arsenides, the apparently weak electron-phonon coupling and the "resonance peak" in the superconducting spin...

Transport properties and the anisotropy of Ba_{1-x}K_xFe_2As_2 single crystals in normal and superconducting states (2009)

Zverev, V. N., Korobenko, A. V., Sun, G. L., Sun, D. L., Lin, C. T., Boris, A. V.

The transport and superconducting properties of Ba_{1-x}K_xFe_2As_2 single crystals with T_c = 31 K were studied. Both in-plane and out-of plane resistivity was measured by modified Montgomery...

Phonon anomalies in pure and underdoped R{1-x}K{x}Fe{2}As{2} (R = Ba, Sr) investigated by Raman light scattering (2009)

Rahlenbeck, M., Sun, G. L., Sun, D. L., Lin, C. T., Keimer, B., Ulrich, C.

We present a detailed temperature dependent Raman light scattering study of optical phonons in Ba{1-x}K{x}Fe{2}As{2} (x ~ 0.28, superconducting Tc ~ 29 K), Sr{1-x}K{x}Fe{2}As{2} (x ~ 0.15, Tc ~ 29 K)...

Anisotropic spin fluctuations and multiple superconducting gaps in hole-doped Ba_0.7K_0.3Fe_2As_2: NMR in a single crystal (2009)

Matano, K., Sun, G. L., Sun, D. L., Lin, C. T., Ichioka, M., Zheng, Guo-qing

We report the first ^{75}As-NMR study on a single crystal of the hole-doped iron-pnictide superconductor Ba_{0.7}K_{0.3}Fe_2As_{2} (T_c = 31.5 K). We find that the Fe antiferromagnetic spin...

Iron pnictides: Single crystal growth and effect of doping on structural, transport and magnetic properties (2009)

Sun, G. L., Sun, D. L., Konuma, M., Popovich, P., Boris, A., Peng, J. B., ...

We demonstrate the preparation of large, free standing iron pnictide single crystals with a size up to 20 x 10 x 1 mm3 using solvents in zirconia crucibles under argon atmosphere. Transport and...