Zobrazeno 1 - 10
of 107
pro vyhledávání: '"Veenstra C"'
Autor:
Zhu, Z. -H., Veenstra, C. N., Zhdanovich, S., Schneider, M. P., Okuda, T., Miyamoto, K., Zhu, S. -Y., Namatame, H., Taniguchi, M., Haverkort, M. W., Elfimov, I. S., Damascelli, A.
Publikováno v:
Phys. Rev. Lett. 112, 076802 (2014)
We study the manipulation of the photoelectron spin-polarization in Bi$_2$Se$_3$ by spin- and angle-resolved photoemission spectroscopy. General rules are established that enable controlling the spin-polarization of photoemitted electrons via light p
Externí odkaz:
http://arxiv.org/abs/1401.1224
Publikováno v:
Phys. Rev. B 90, 045150 (2014)
We study how the energy and momentum resolution of angle-resolved photoemission spectroscopy (ARPES) affects the linewidth, Fermi crossing, velocity, and curvature of the measured band structure. Based on the fact that the resolution smooths out the
Externí odkaz:
http://arxiv.org/abs/1306.2667
Autor:
Veenstra, C. N., Zhu, Z. -H., Raichle, M., Ludbrook, B. M., Nicolaou, A., Slomski, B., Landolt, G., Kittaka, S., Maeno, Y., Dil, J. H., Elfimov, I. S., Haverkort, M. W., Damascelli, A.
Publikováno v:
PRL 112, 127002 (2014)
Spin-orbit coupling has been conjectured to play a key role in the low-energy electronic structure of Sr2RuO4. Using circularly polarized light combined with spin- and angle-resolved photoemission spectroscopy, we directly measure the value of the ef
Externí odkaz:
http://arxiv.org/abs/1303.5444
Autor:
Zhu, Z. -H., Veenstra, C. N., Levy, G., Ubaldini, A., Syers, P., Butch, N. P., Paglione, J., Haverkort, M. W., Elfimov, I. S., Damascelli, A.
Publikováno v:
Phys. Rev. Lett. 110, 216401 (2013)
We study Bi2Se3 by polarization-dependent angle-resolved photoemission spectroscopy (ARPES) and density-functional theory slab calculations. We find that the surface state Dirac fermions are characterized by a layer-dependent entangled spin-orbital t
Externí odkaz:
http://arxiv.org/abs/1212.4845
Autor:
Veenstra, C. N., Zhu, Z. -H., Ludbrook, B., Capsoni, M., Levy, G., Nicolaou, A., Rosen, J. A., Comin, R., Kittaka, S., Maeno, Y., Elfimov, I. S., Damascelli, A.
Publikováno v:
Phys. Rev. Lett. 110, 097004 (2013)
In search of the potential realization of novel normal-state phases on the surface of Sr2RuO4 - those stemming from either topological bulk properties or the interplay between spin-orbit coupling (SO) and the broken symmetry of the surface - we revis
Externí odkaz:
http://arxiv.org/abs/1205.4248
Autor:
Comin, R., Levy, G., Ludbrook, B., Zhu, Z. -H., Veenstra, C. N., Rosen, J. A., Singh, Yogesh, Gegenwart, P., Stricker, D., Hancock, J. N., van der Marel, D., Elfimov, I. S., Damascelli, A.
Publikováno v:
Phys. Rev. Lett. 109, 266406 (2012)
We study Na2IrO3 by ARPES, optics, and band structure calculations in the local-density approximation (LDA). The weak dispersion of the Ir 5d-t2g manifold highlights the importance of structural distortions and spin-orbit coupling (SO) in driving the
Externí odkaz:
http://arxiv.org/abs/1204.4471
Autor:
Rosen, J. A., Comin, R., Levy, G., Fournier, D., Zhu, Z. -H., Ludbrook, B., Veenstra, C. N., Nicolaou, A., Wong, D., Dosanjh, P., Yoshida, Y., Eisaki, H., Blake, G. R., White, F., Palstra, T. T. M., Sutarto, R., He, F., Frano, A., Lu, Y., Keimer, B., Sawatzky, G. A., Petaccia, L., Damascelli, A.
Publikováno v:
Nature Communications 4, 1977 (2013)
Neutron and x-ray scattering experiments have provided mounting evidence for spin and charge ordering phenomena in underdoped cuprates. These range from early work on stripe correlations in Nd-LSCO to the latest discovery of charge-density-waves in Y
Externí odkaz:
http://arxiv.org/abs/1111.2673
Autor:
Zhu, Z. -H., Levy, G., Ludbrook, B., Veenstra, C. N., Rosen, J. A., Comin, R., Wong, D., Dosanjh, P., Ubaldini, A., Syers, P., Butch, N. P., Paglione, J., Elfimov, I. S., Damascelli, A.
Publikováno v:
Phys. Rev. Lett. 107, 186405 (2011)
The electronic structure of Bi2Se3 is studied by angle-resolved photoemission and density functional theory. We show that the instability of the surface electronic properties, observed even in ultra-high-vacuum conditions, can be overcome via in-situ
Externí odkaz:
http://arxiv.org/abs/1106.0552
Publikováno v:
Phys. Rev. B 84, 085126 (2011)
We simulate spectral functions for electron-phonon coupling in a filled band system - far from the asymptotic limit often assumed where the phonon energy is very small compared to the Fermi energy in a parabolic band and the Migdal theorem predicting
Externí odkaz:
http://arxiv.org/abs/1102.3716
Publikováno v:
Phys. Rev. B 82, 012504 (2010)
We examine multiple techniques for extracting information from angle-resolved photoemission spectroscopy (ARPES) data, and test them against simulated spectral functions for electron-phonon coupling. We find that, in the low-coupling regime, it is po
Externí odkaz:
http://arxiv.org/abs/1003.0141