Zobrazeno 1 - 10
of 452
pro vyhledávání: '"Hikita, Y."'
Autor:
Hepting, M., Li, D., Jia, C. J., Lu, H., Paris, E., Tseng, Y., Feng, X., Osada, M., Been, E., Hikita, Y., Chuang, Y. -D., Hussain, Z., Zhou, K. J., Nag, A., Garcia-Fernandez, M., Rossi, M., Huang, H. Y., Huang, D. J., Shen, Z. X., Schmitt, T., Hwang, H. Y., Moritz, B., Zaanen, J., Devereaux, T. P., Lee, W. S.
Publikováno v:
Nature Materials 19, 381 (2020)
The search for oxide materials with physical properties similar to the cuprate high Tc superconductors, but based on alternative transition metals such as nickel, has grown and evolved over time. The recent discovery of superconductivity in doped inf
Externí odkaz:
http://arxiv.org/abs/1909.02678
Autor:
Minohara, M., Hikita, Y., Bell, C., Inoue, H., Hosoda, M., Sato, H. K., Kumigashira, H., Oshima, M., Ikenaga, E., Hwang, H. Y.
We report measurements of the gate-bias dependent band alignment, especially the confining potential profile, at the conducting LaAlO3/SrTiO3 (001) heterointerface using soft and hard x-ray photoemission spectroscopy. Depth-profiling analysis reveals
Externí odkaz:
http://arxiv.org/abs/1403.5594
We report the operation of LaAlO_3 / SrTiO_3 depletion mode top-gated junction field-effect transistors using a range of LaAlO_3 thicknesses as the top gate insulator. Gated Hall bars show near ideal transistor characteristics at room temperature wit
Externí odkaz:
http://arxiv.org/abs/1306.4351
We investigate the effect of the laser parameters of pulsed laser deposition on the film stoichiometry and electronic properties of LaAlO_3/SrTiO_3 (001) heterostructures. The La/Al ratio in the LaAlO_3 films was varied over a wide range from 0.88 to
Externí odkaz:
http://arxiv.org/abs/1304.7830
Anisotropic magnetoresistance and negative magnetoresistance for in-plane fields are compared for the LaAlO3 /SrTiO3 interface and the symmetric Nb-doped SrTiO3 heterostructure. Both effects are exceptionally strong in LaAlO3 /SrTiO3 . We analyze the
Externí odkaz:
http://arxiv.org/abs/1207.6057
Autor:
Tachikawa, T., Minohara, M., Nakanishi, Y., Hikita, Y., Yoshita, M., Akiyama, H., Bell, C., Hwang, H. Y.
We demonstrate control of the carrier density of single phase anatase TiO2 thin films by nearly two orders of magnitude by modulating the growth kinetics during pulsed laser deposition, under fixed thermodynamic conditions. The resistivity and the in
Externí odkaz:
http://arxiv.org/abs/1205.4065
Publikováno v:
Phys. Rev. B 88, 085102 (2013)
We report the electron doping in the surface vicinity of KTaO_3 by inducing oxygen-vacancies via Ar^+ -irradiation. The doped electrons have high mobility (> 10^4 cm^2/Vs) at low temperatures, and exhibit Shubnikov-de Haas oscillations with both two-
Externí odkaz:
http://arxiv.org/abs/1205.0197
Autor:
Kirtley, J. R., Kalisky, B., Bert, J. A., Bell, C., Hikita, Y., Hwang, H. Y., Ngai, J. H., Segal, Y., Walker, F. J., Ahn, C. H., Moler, K. A.
Scanning SQUID susceptometry images the local magnetization and susceptibility of a sample. By accurately modeling the SQUID signal we can determine the physical properties such as the penetration depth and permeability of superconducting samples. We
Externí odkaz:
http://arxiv.org/abs/1204.3355
Autor:
King, P. D. C., He, R. H., Eknapakul, T., Buaphet, P., Mo, S. -K., Kaneko, Y., Harashima, S., Hikita, Y., Bahramy, M. S., Bell, C., Hussain, Z., Tokura, Y., Shen, Z. -X., Hwang, H. Y., Baumberger, F., Meevasana, W.
Publikováno v:
Phys. Rev. Lett. 108 (2012) 117602
We demonstrate the formation of a two-dimensional electron gas (2DEG) at the $(100)$ surface of the $5d$ transition-metal oxide KTaO$_3$. From angle-resolved photoemission, we find that quantum confinement lifts the orbital degeneracy of the bulk ban
Externí odkaz:
http://arxiv.org/abs/1111.2782
LaAlO3 and SrTiO3 are insulating, nonmagnetic oxides, yet the interface between them exhibits a two-dimensional electron system with high electron mobility,1 superconductivity at low temperatures,2-6 and electric-field-tuned metal-insulator and super
Externí odkaz:
http://arxiv.org/abs/1108.3150