Zobrazeno 1 - 10
of 749
pro vyhledávání: '"Park S. R."'
Autor:
Merritt, A. M., Castellan, J. -P., Keller, T., Park, S. R., Fernandez-Baca, J. A., Gu, G. D., Reznik, D.
Electron-phonon interaction in copper oxide superconductors is still enigmatic. Strong coupling for certain optic phonons is now well established experimentally, but theoretical understanding is challenging. Scattering of electrons near the Fermi sur
Externí odkaz:
http://arxiv.org/abs/1702.04331
Autor:
Park, S. R., Fukuda, T., Hamann, A., Lamago, D., Pintschovius, L., Fujita, M., Yamada, K., Reznik, D.
Publikováno v:
Phys. Rev. B 89, 020506(R) (2014)
In superconducting copper oxides some Cu-O bond-stretching phonons around 70meV show anomalous giant softening and broadening of electronic origin and electronic dispersions have large renormalization kinks near the same energy. These observations su
Externí odkaz:
http://arxiv.org/abs/1401.1111
Autor:
Park, S. R., Cao, Y., Wang, Q., Fujita, M., Yamada, K., Mo, S. -K., Dessau, D. S., Reznik, D.
Publikováno v:
Phys. Rev. B 88, 220503(R) (2013)
Electronic band dispersions in copper oxide superconductors have kinks around 70 meV that are typically attributed to coupling of electrons to a bosonic mode. We performed angle resolved photoemission spectroscopy (ARPES) experiments on overdoped cup
Externí odkaz:
http://arxiv.org/abs/1304.0505
Autor:
Wang, Q., Cao, Y., Waugh, J. A., Park, S. R., Qi, T. F., Korneta, O. B., Cao, G., Dessau, D. S.
We studied Sr2IrO4 and Sr3Ir2O7 using angle-resolved photoemission spectroscopy (ARPES), making direct experimental determinations of intra- and inter-cell coupling parameters as well as Mott correlations and gap sizes. The results are generally cons
Externí odkaz:
http://arxiv.org/abs/1210.4141
Autor:
Park, S. R., Hamann, A., Pintschovius, L., Lamago, D., Khaliullin, G., Fujita, M., Yamada, K., Gu, G. D., Tranquada, J. M., Reznik, D.
Publikováno v:
Phys. Rev. B 84, 214516 (2011)
Purely local experimental probes of many copper oxide superconductors show that their electronic states are inhomogeneous in real space. For example, scanning tunneling spectroscopic (STS) imaging shows strong variations in real space, and according
Externí odkaz:
http://arxiv.org/abs/1110.4926
Publikováno v:
Phys. Rev. B 81, 041405(R) (2010)
We report on angle resolved photoemission spectroscopic studies on a parent topological insulator (TI), Bi$_2$Se$_3$. The line width of the spectral function (inverse of the quasi-particle lifetime) of the topological metallic (TM) states shows an an
Externí odkaz:
http://arxiv.org/abs/0912.3883
Autor:
Leem, C. S., Kim, B. J., Kim, Chul, Park, S. R., Kim, Min-Kook, Johnston, S., Ohta, T., Bostwick, A., Choi, Hyoung Joon, Devereaux, T., Rotenberg, E., Kim, C.
We obtained the spectral function of the graphite H point using high resolution angle resolved photoelectron spectroscopy (ARPES). The extracted width of the spectral function (inverse of the photo-hole lifetime) near the H point is approximately pro
Externí odkaz:
http://arxiv.org/abs/0903.0681
Autor:
Leem, C. S., Kim, B. J., Kim, Chul, Park, S. R., Ohta, T., Bostwick, A., Rotenberg, E., Kim, H. -D., Kim, M. K., Choi, H. J., Kim, C.
We obtained the spectral function of very high quality natural graphite single crystals using angle resolved photoelectron spectroscopy (ARPES). A clear separation of non-bonding and bonding bands and asymmetric lineshape are observed. The asymmetric
Externí odkaz:
http://arxiv.org/abs/0708.3420
Autor:
Kim, Chul, Park, S. R., Leem, C. S., Song, D. J., Jin, H. U., Kim, H. -D., Ronning, F., Kim, C.
Publikováno v:
Physical Review B 76, 104505 (2007)
We propose using the self energy defined for the electron removal Green's function. Starting from the electron removal Green's function, we obtained expressions for the removal self energy Sigma^ER (k,omega) that are applicable for non-quasiparticle
Externí odkaz:
http://arxiv.org/abs/0708.1358
Autor:
Park, S. R., Roh, Y. S., Yoon, Y. K., Leem, C. S., Kim, J. H., Kim, B. J., Koh, H., Eisaki, H., Armitage, N. P., Kim, C.
Angle resolved photoemission (ARPES) data from the electron doped cuprate superconductor Sm$_{1.86}$Ce$_{0.14}$CuO$_4$ shows a much stronger pseudo-gap or "hot-spot" effect than that observed in other optimally doped $n$-type cuprates. Importantly, t
Externí odkaz:
http://arxiv.org/abs/cond-mat/0612419