Zobrazeno 1 - 10
of 443
pro vyhledávání: '"Sun, G. L."'
Autor:
Tacon, M. Le, Ghiringhelli, G., Chaloupka, J., Sala, M. Moretti, Hinkov, V., Haverkort, M. W., Minola, M., Bakr, M., Zhou, K. J., Blanco-Canosa, S., Monney, C., Song, Y. T., Sun, G. L., Lin, C. T., De Luca, G. M., Salluzzo, M., Khaliullin, G., Schmitt, T., Braicovich, L., Keimer, B.
Publikováno v:
Nature Physics 7, 725 (2011)
In the search for the mechanism of high-temperature superconductivity, intense research has been focused on the evolution of the spin excitation spectrum upon doping from the antiferromagnetic insulating to the superconducting states of the cuprates.
Externí odkaz:
http://arxiv.org/abs/1106.2641
Autor:
Wang, Xiao-Lin, Ghorbani, S. R., Lee, Sung-Ik, Dou, S. X., Lin, C. T., Johansen, T. H., Cheng, Z. X., Peleckis, G., Muller, K., Shabazi, M., Sun, G. L., Sun, D. L.
Publikováno v:
Physical Review B 82, 024525 (2010)
We report that single crystals of (Ba,K)Fe2As2 with Tc = 32 K have a pinning potential, U0, as high as 10^4 K, with U0 showing very little field depend-ence. In addition, the (Ba,K)Fe2As2 single crystals become isotropic at low temperatures and high
Externí odkaz:
http://arxiv.org/abs/1002.2095
Autor:
Choi, K. -Y., Lemmens, P., Eremin, I., Zwicknagl, G., Berger, H., Sun, G. L., Sun, D. L., Lin, C. T.
Publikováno v:
J. Phys.: Condens. Matter 22, 115802 (2010)
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 mode at 210 cm-1 exhibits an appreciable temperatu
Externí odkaz:
http://arxiv.org/abs/0908.4364
Publikováno v:
Pis'ma v ZhETP, 90(2), 140-143 (2009), http://www.jetpletters.ac.ru/ps/1874/article_28559.shtml
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 method. The in-plane resistivity for all studied samples,
Externí odkaz:
http://arxiv.org/abs/0907.2598
Publikováno v:
Phys. Rev. B 80, 064509 (2009)
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) and non-superconducting BaFe{2}As{2} single crysta
Externí odkaz:
http://arxiv.org/abs/0907.0560
Autor:
Zabolotnyy, V. B., Evtushinsky, D. V., Kordyuk, A. A., Inosov, D. S., Koitzsch, A., Boris, A. V., Sun, G. L., Lin, C. T., Knupfer, M., Buechner, B., Varykhalov, A., Follath, R., Borisenko, S. V.
Publikováno v:
Physica C 469, 448-451 (2009)
Here we apply high resolution angle-resolved photoemission spectroscopy (ARPES) using a wide excitation energy range to probe the electronic structure and the Fermi surface topology of the Ba1-xKxFe2As2 (Tc = 32 K) superconductor. We find significant
Externí odkaz:
http://arxiv.org/abs/0904.4337
Publikováno v:
EPL 87 (2009) 27012
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 fluctuations are anisotropic and are weaker compared to unde
Externí odkaz:
http://arxiv.org/abs/0903.5098
Autor:
Inosov, D. S., Leineweber, A., Yang, Xiaoping, Park, J. T., Christensen, N. B., Dinnebier, R., Sun, G. L., Niedermayer, Ch., Haug, D., Stephens, P. W., Stahn, J., Lin, C. T., Andersen, O. K., Keimer, B., Hinkov, V.
Publikováno v:
Phys. Rev. B 79, 224503 (2009)
We present x-ray powder diffraction (XRPD) and neutron diffraction measurements on the slightly underdoped iron pnictide superconductor Ba(1-x)K(x)Fe2As2, Tc = 32K. Below the magnetic transition temperature Tm = 70K, both techniques show an additiona
Externí odkaz:
http://arxiv.org/abs/0903.4537
Autor:
Evtushinsky, D. V., Inosov, D. S., Zabolotnyy, V. B., Viazovska, M. S., Khasanov, R., Amato, A., Klauss, H. -H., Luetkens, H., Niedermayer, Ch., Sun, G. L., Hinkov, V., Lin, C. T., Varykhalov, A., Koitzsch, A., Knupfer, M., Büchner, B., Kordyuk, A. A., Borisenko, S. V.
Publikováno v:
New J. Phys. 11, 055069 (2009)
Here we present a calculation of the temperature-dependent London penetration depth, $\lambda(T)$, in Ba$_{1-x}$K$_{x}$Fe$_2$As$_2$ (BKFA) on the basis of the electronic band structure [1,2] and momentum-dependent superconducting gap [3] extracted fr
Externí odkaz:
http://arxiv.org/abs/0903.4362
Autor:
Sun, G. L., Sun, D. L., Konuma, M., Popovich, P., Boris, A., Peng, J. B., Choi, K. -Y., Lemmens, P., Lin, C. T.
Publikováno v:
J. of Supercond. and Novel Magn. 24, 1773 (2011)
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 magnetic properties are investigated to study the effect
Externí odkaz:
http://arxiv.org/abs/0901.2728