Zobrazeno 1 - 10
of 500
pro vyhledávání: '"Tjeng, L. H."'
Autor:
Okawa, M., Takegami, D., Christovam, D. S., Ferreira-Carvalho, M., Kuo, C. -Y., Chen, C. T., Miyoshino, T., Takasu, K., Okuda, T., Chang, C. F., Tjeng, L. H., Mizokawa, T.
Publikováno v:
Phys. Rev. B 108, 195108 (2023)
Corundum oxide Ti$_2$O$_3$ shows the metal-insulator transition around 400-600 K accompanying the nearest Ti$^{3+}$-Ti$^{3+}$ bond ($a_{1g}a_{1g}$ singlet state) formation along the $c$ axis. In order to clarify the hole-doping effect for the $a_{1g}
Externí odkaz:
http://arxiv.org/abs/2311.04814
Autor:
Guo, M. X., Cheng, C. K., Liu, Y. C., Wu, C. N., Chen, W. N., Chen, T. Y, Wu, C. T., Hsu, C. H., Zhou, S. Q., Chang, C. F., Tjeng, L. H., Lee, S. F., Pai, C. F., Hong, M., Kwo, J.
Single-crystal europium iron garnet (EuIG) thin films epitaxially strain-grown on gadolinium gallium garnet (GGG)(100) substrates using off-axis sputtering have strain-induced perpendicular magnetic anisotropy (PMA). By varying the sputtering conditi
Externí odkaz:
http://arxiv.org/abs/2201.03843
Autor:
Takegami, D., Kuo, C. Y., Kasebayashi, K., Kim, J. -G., Chang, C. F., Liu, C. E., Wu, C. N., Kasinathan, D., Altendorf, S. G., Hoefer, K., Meneghin, F., Marino, A., Liao, Y. F., Tsuei, K. D., Chen, C. T., Ko, K. -T., Günther, A., Ebbinghaus, S. G., Seo, J. W., Lee, D. H., Ryu, G., Komarek, A. C., Sugano, S., Shimakawa, Y., Tanaka, A., Mizokawa, T., Kuneš, J., Tjeng, L. H., Hariki, A.
Publikováno v:
Phys. Rev. X 12, 011017 (2022)
We present a comprehensive study of CaCu$_3$Ru$_4$O$_{12}$ using bulk sensitive hard and soft x-ray spectroscopy combined with local-density approximation (LDA) + dynamical mean-field theory (DMFT) calculations. Correlation effects on both the Cu and
Externí odkaz:
http://arxiv.org/abs/2112.02898
Autor:
Guo, H., Zhao, L., Baenitz, M., Fabrèges, X., Gukasov, A., Sans, A. Melendez, Khomskii, D. I., Tjeng, L. H., Komarek, A. C.
Publikováno v:
Physical Review RESEARCH 3, L032037 (2021)
Despite the absence of an apparent triangular pattern in the crystal structure, we observe unusually well pronounced 1/3 magnetization plateaus in the quasi one-dimensional Ising spin chain compound CoGeO$_3$ which belongs to the class of pyroxene mi
Externí odkaz:
http://arxiv.org/abs/2109.07367
Autor:
Zhao, L., Hu, Z., Guo, H., Geibel, C., Lin, H. J., Chen, C. T., Khomskii, D. I., Tjeng, L. H., Komarek, A. C.
Publikováno v:
Crystals 11(4), 378 (2021)
We report on the synthesis and physical properties of cm-sized CoGeO$_3$ single crystals grown in a high pressure mirror furnace at pressures of 80~bar. Direction dependent magnetic susceptibility measurements on our single crystals reveal highly ani
Externí odkaz:
http://arxiv.org/abs/2103.14505
Autor:
Zhang, Jun, Komarek, Alexander C., Jin, Meiling, Wang, Xiancheng, Jia, Yating, Zhao, Jianfa, Li, Wenmin, Hu, Zhiwei, Peng, Wei, Tjeng, L. H., Deng, Zheng, Yu, Runze, Feng, Shaomin, Zhang, Sijia, Liu, Min, Yang, Yi-feng, Lin, Hong-ji, Chen, Chien-Te, Li, Xiaodong, Zhu, Jinlong, Jin, Changqing
Publikováno v:
Phys. Rev. Materials 5, 054606 (2021)
We report the synthesis of a new quasi one-dimensional (1D) iron selenide. Ba9Fe3Se15 was synthesized at high temperature and high pressure of 5.5 GPa and systematically studied via structural, magnetic and transport measurements at ambient and at hi
Externí odkaz:
http://arxiv.org/abs/2102.03708
Autor:
Amorese, A., Leedahl, B., Sundermann, M., Gretarsson, H., Hu, Z., Lin, H. -J., Chen, C. T., Schmidt, M., Borrmann, H., Grin, Yu., Severing, A., Haverkort, M. W., Tjeng, L. H.
Publikováno v:
Physical Review X 11, 011002 (2021)
Herein we show that non-resonant inelastic x-ray scattering involving an $s$ core level is a powerful spectroscopic method to characterize the excited states of transition metal compounds. The spherical charge distribution of the $s$ core hole allows
Externí odkaz:
http://arxiv.org/abs/2101.01947
Autor:
Guo, H., Li, Z. W., Chang, C. F., Hu, Z., Kuo, C. -Y., Perring, T. G., Schmidt, W., Piovano, A., Schmalzl, K., Walker, H. C., Lin, H. J., Chen, C. T., Blanco-Canosa, S., Schlappa, J., Schüßler-Langeheine, C., Hansmann, P., Khomskii, D. I., Tjeng, L. H., Komarek, A. C.
Publikováno v:
Sci. Rep. 10, 18012 (2020)
We have successfully grown centimeter-sized layered $R$SrNiO$_4$ single crystals under high oxygen pressures of 120 bar by the floating zone technique. This enabled us to perform neutron scattering experiments where we observe close to quarter-intege
Externí odkaz:
http://arxiv.org/abs/2007.03544
Publikováno v:
APL Materials 8, 071114 (2020)
Relying on the magnetism induced by the proximity effect in heterostructures of topological insulators and magnetic insulators is one of the promising routes to achieve the quantum anomalous Hall effect. Here we investigate heterostructures of Bi$_2$
Externí odkaz:
http://arxiv.org/abs/2006.14914
Autor:
Takegami, D., Kasinathan, D., Wolff, K. K., Altendorf, S. G., Chang, C. F., Hoefer, K., Melendez-Sans, A., Utsumi, Y., Meneghin, F., Ha, T. D., Yen, C. H., Chen, K., Kuo, C. Y., Liao, Y. F., Tsuei, K. D., Morrow, R., Wurmehl, S., Büchner, B., Prasad, B. E., Jansen, M., Komarek, A. C., Hansmann, P., Tjeng, L. H.
Publikováno v:
Phys. Rev. B 102, 045119 (2020)
We have investigated the electronic structure of iridates in the double perovskite crystal structure containing either Ir$^{4+}$ or Ir$^{5+}$ using hard x-ray photoelectron spectroscopy. The experimental valence band spectra can be well reproduced us
Externí odkaz:
http://arxiv.org/abs/2005.11961