Universität zu Köln

2021

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. and Tjeng, L. H. (2021). Selective Orbital Imaging of Excited States with X-Ray Spectroscopy: The Example of alpha-MnS. Phys. Rev. X, 11 (1). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2160-3308

Guo, H., Zhao, L., Baenitz, M., Fabreges, X., Gukasov, A., Sans, A. Melendez, Khomskii, D., I, Tjeng, L. H. and Komarek, A. C. (2021). Emergent 1/3 magnetization plateaus in pyroxene CoGeO3. Phys. Rev. Res., 3 (3). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2643-1564

2020

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., Buechner, B., Prasad, B. E., Jansen, M., Komarek, A. C., Hansmann, P. and Tjeng, L. H. (2020). Charge-transfer energy in iridates: A hard x-ray photoelectron spectroscopy study. Phys. Rev. B, 102 (4). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

2019

Agrestini, S., Chen, K., Kuo, C-Y, Zhao, L., Lin, H-J, Chen, C-T, Rogalev, A., Ohresser, P., Chan, T-S, Weng, S-C, Auffermann, G., Voelzke, A., Komarek, A. C., Yamaura, K., Haverkort, M. W., Hu, Z. and Tjeng, L. H. (2019). Nature of the magnetism of iridium in the double perovskite Sr2CoIrO6. Phys. Rev. B, 100 (1). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

Chin, Y. Y., Hu, Z., Lin, H-J, Agrestini, S., Weinen, J., Martin, C., Hebert, S., Maignan, A., Tanaka, A., Cezar, J. C., Brookes, N. B., Liao, Y-F, Tsuei, K-D, Chen, C. T., Khomskii, D., I and Tjeng, L. H. (2019). Spin-orbit coupling and crystal-field distortions for a low-spin 3d(5) state in BaCoO3. Phys. Rev. B, 100 (20). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

Sundermann, M., Amorese, A., Strigari, F., Leedahl, B., Tjeng, L. H., Haverkort, M. W., Gretarsson, H., Yavas, H., Sala, M. Moretti, Bauer, E. D., Rosa, P. F. S., Thompson, J. D. and Severing, A. (2019). Orientation of the ground-state orbital in CeCoIn5 and CeRhIn5. Phys. Rev. B, 99 (23). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

Takegami, D., Nicolai, L., Koethe, T. C., Kasinathan, D., Kuo, C. Y., Liao, Y. F., Tsuei, K. D., Panaccione, G., Offi, F., Monaco, G., Brookes, N. B., Minar, J. and Tjeng, L. H. (2019). Valence band hard x-ray photoelectron spectroscopy on 3d transition-metal oxides containing rare-earth elements. Phys. Rev. B, 99 (16). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

2018

Agrestini, S., Kuo, C-Y, Chen, K., Utsumi, Y., Mikhailova, D., Rogalev, A., Wilhelm, F., Foerster, T., Matsumoto, A., Takayama, T., Takagi, H., Haverkort, M. W., Hu, Z. and Tjeng, L. H. (2018). Probing the J(eff)=0 ground state and the Van Vleck paramagnetism of the Ir5+ ions in layered Sr2Co0.5Ir0.5O4. Phys. Rev. B, 97 (21). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

Chang, C. F., Koethe, T. C., Hu, Z., Weinen, J., Agrestini, S., Zhao, L., Gegner, J., Ott, H., Panaccione, G., Wu, Hua ORCID: 0000-0003-1280-202X, Haverkort, M. W., Roth, H., Komarek, A. C., Offi, F., Monaco, G., Liao, Y. -F., Tsuei, K. -D., Lin, H. -J., Chen, C. T., Tanaka, A. and Tjeng, L. H. (2018). c-Axis Dimer and Its Electronic Breakup: The Insulator-to-Metal Transition in Ti2O3. Phys. Rev. X, 8 (2). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2160-3308

Guo, H., Li, Z. W., Zhao, L., Hu, Z., Chang, C. F., Kuo, C. -Y., Schmidt, W., Piovano, A., Pi, T. W., Sobolev, O., Khomskii, D. I., Tjeng, L. H. and Komarek, A. C. (2018). Antiferromagnetic correlations in the metallic strongly correlated transition metal oxide LaNiO3. Nat. Commun., 9. LONDON: NATURE PUBLISHING GROUP. ISSN 2041-1723

Sundermann, M., Yavas, H., Chen, K., Kim, D. J., Fisk, Z., Kasinathan, D., Haverkort, M. W., Thalmeier, P., Severing, A. and Tjeng, L. H. (2018). 4f Crystal Field Ground State of the Strongly Correlated Topological Insulator Sm B-6. Phys. Rev. Lett., 120 (1). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

2017

Kuo, C. -Y., Haupricht, T., Weinen, J., Wu, Hua ORCID: 0000-0003-1280-202X, Tsuei, K. -D., Haverkort, M. W., Tanaka, A. and Tjeng, L. H. (2017). Challenges from experiment: electronic structure of NiO. Eur. Phys. J.-Spec. Top., 226 (11). S. 2445 - 2457. HEIDELBERG: SPRINGER HEIDELBERG. ISSN 1951-6401

Sundermann, M., Chen, K., Yavas, H., Lee, Hanoh, Fisk, Z., Haverkort, M. W., Tjeng, L. H. and Severing, A. (2017). The quartet ground state in CeB6: An inelastic x-ray scattering study. EPL, 117 (1). BRISTOL: IOP PUBLISHING LTD. ISSN 1286-4854

2016

Chang, C. F., Hu, Z., Klein, S., Liu, X. H., Sutarto, R., Tanaka, A., Cezar, J. C., Brookes, N. B., Lin, H. -J., Hsieh, H. H., Chen, C. T., Rata, A. D. and Tjeng, L. H. (2016). Dynamic Atomic Reconstruction: How Fe3O4 Thin Films Evade Polar Catastrophe for Epitaxy. Phys. Rev. X, 6 (4). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2160-3308

Nugroho, A. A., Hu, Z., Kuo, C. Y., Haverkort, M. W., Pi, T. W., Onggo, D., Valldor, M. and Tjeng, L. H. (2016). Cross-type orbital ordering in the layered hybrid organic-inorganic compound (C6H5CH2CH2NH3)(2)CuCl4. Phys. Rev. B, 94 (18). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

Sundermann, M., Strigari, F., Willers, T., Weinen, J., Liao, Y. F., Tsuei, K. -D., Hiraoka, N., Ishii, H., Yamaoka, H., Mizuki, J., Zekko, Y., Bauer, E. D., Sarrao, J. L., Thompson, J. D., Lejay, P., Muro, Y., Yutani, K., Takabatake, T., Tanaka, A., Hollmann, N., Tjeng, L. H. and Severing, A. (2016). Quantitative study of the f occupation in CeMIn5 and other cerium compounds with hard X-rays. J. Electron Spectrosc. Relat. Phenom., 209. S. 1 - 9. AMSTERDAM: ELSEVIER SCIENCE BV. ISSN 1873-2526

Zhao, Qing, Liu, Min, Dai, Jianhong, Yin, Yunyu, Zhou, Long, Yang, Junye, Hu, Zhiwei, Agrestini, Stefano ORCID: 0000-0002-3625-880X, Chen, Kai, Pellegrin, Eric ORCID: 0000-0002-1648-0331, Valvidares, Manuel, Nataf, Lucie, Baudelet, Francois, Tjeng, L. H., Yang, Yi-feng, Jin, Changqing and Long, Youwen ORCID: 0000-0002-8587-7818 (2016). High-Pressure Synthesis and Ferrimagnetic Ordering of the B-Site-Ordered Cubic Perovskite Pb2FeOsO6. Inorg. Chem., 55 (19). S. 9816 - 9822. WASHINGTON: AMER CHEMICAL SOC. ISSN 1520-510X

2015

Strigari, F., Sundermann, M., Muro, Y., Yutani, K., Takabatake, T., Tsuei, K. -D., Liao, Y. F., Tanaka, A., Thalmeier, P., Haverkort, M. W., Tjeng, L. H. and Severing, A. (2015). Quantitative study of valence and configuration interaction parameters of the Kondo semiconductors CeM2Al10 (M = Ru, Os and Fe) by means of bulk-sensitive hard X-ray photoelectron spectroscopy. J. Electron Spectrosc. Relat. Phenom., 199. S. 56 - 64. AMSTERDAM: ELSEVIER SCIENCE BV. ISSN 1873-2526

Weinen, J., Koethe, T. C., Chang, C. F., Agrestini, S., Kasinathan, D., Liao, Y. F., Fujiwara, H., Schussler-Langeheine, C., Strigari, F., Haupricht, T., Panaccione, G., Offi, F., Monaco, G., Huotari, S., Tsuei, K-D. and Tjeng, L. H. (2015). Polarization dependent hard X-ray photoemission experiments for solids: Efficiency and limits for unraveling the orbital character of the valence band. J. Electron Spectrosc. Relat. Phenom., 198. S. 6 - 12. AMSTERDAM: ELSEVIER. ISSN 1873-2526

2014

Mikhailova, D., Kuo, C. Y., Reichel, P., Tsirlin, A. A., Efimenko, A., Rotter, M., Schmidt, M., Hu, Z., Pi, T. W., Jang, L. Y., Soo, Y. L., Oswald, S. and Tjeng, L. H. (2014). Structure, Magnetism, and Valence States of Cobalt and Platinum in Quasi-One-Dimensional Oxides A(3)CoPtO(6) with A = Ca, Sr. J. Phys. Chem. C, 118 (10). S. 5463 - 5470. WASHINGTON: AMER CHEMICAL SOC. ISSN 1932-7455

Tsirlin, A. A., Rabie, M. G., Efimenko, A., Hu, Z., Saez-Puche, R. and Tjeng, L. H. (2014). Importance of tetrahedral coordination for high-valent transition-metal oxides: YCrO4 as a model system. Phys. Rev. B, 90 (8). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

2013

Tanaka, A., Chang, C. F., Buchholz, M., Trabant, C., Schierle, E., Schlappa, J., Schmitz, D., Ott, H., Metcalf, P., Tjeng, L. H. and Schuessler-Langeheine, C. (2013). Analysis of charge and orbital order in Fe3O4 by Fe L-2,L-3 resonant x-ray diffraction. Phys. Rev. B, 88 (19). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

2012

Hu, Z., Wu, Hua ORCID: 0000-0003-1280-202X, Koethe, T. C., Barilo, S. N., Shiryaev, S. V., Bychkov, G. L., Schuessler-Langeheine, C., Lorenz, T., Tanaka, A., Hsieh, H. H., Lin, H-J, Chen, C. T., Brookes, N. B., Agrestini, S., Chin, Y-Y, Rotter, M. and Tjeng, L. H. (2012). Spin-state order/disorder and metal-insulator transition in GdBaCo2O5.5: experimental determination of the underlying electronic structure. New J. Phys., 14. BRISTOL: IOP PUBLISHING LTD. ISSN 1367-2630

2011

Altendorf, S. G., Efimenko, A., Oliana, V., Kierspel, H., Rata, A. D. and Tjeng, L. H. (2011). Oxygen off-stoichiometry and phase separation in EuO thin films. Phys. Rev. B, 84 (15). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1098-0121

Chakhalian, J., Rondinelli, J. M., Liu, Jian ORCID: 0000-0001-7962-2547, Gray, B. A., Kareev, M., Moon, E. J., Prasai, N., Cohn, J. L., Varela, M., Tung, I. C., Bedzyk, M. J., Altendorf, S. G., Strigari, F., Dabrowski, B., Tjeng, L. H., Ryan, P. J. and Freeland, J. W. (2011). Asymmetric Orbital-Lattice Interactions in Ultrathin Correlated Oxide Films. Phys. Rev. Lett., 107 (11). COLLEGE PK: AMER PHYSICAL SOC. ISSN 0031-9007

Willers, T., Cezar, J. C., Brookes, N. B., Hu, Z., Strigari, F., Koerner, P., Hollmann, N., Schmitz, D., Bianchi, A., Fisk, Z., Tanaka, A., Tjeng, L. H. and Severing, A. (2011). Magnetic Field Induced Orbital Polarization in Cubic YbInNi4: Determining the Quartet Ground State Using X-Ray Linear Dichroism. Phys. Rev. Lett., 107 (23). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1079-7114

Wu, Hua ORCID: 0000-0003-1280-202X, Chang, C. F., Schumann, O., Hu, Z., Cezar, J. C., Burnus, T., Hollmann, N., Brookes, N. B., Tanaka, A., Braden, M., Tjeng, L. H. and Khomskii, D. I. (2011). Orbital order in La0.5Sr1.5MnO4: Beyond a common local Jahn-Teller picture. Phys. Rev. B, 84 (15). COLLEGE PK: AMER PHYSICAL SOC. ISSN 1098-0121

2010

Hollmann, N., Hu, Z., Willers, T., Bohaty, L., Becker, P., Tanaka, A., Hsieh, H. H., Lin, H. -J., Chen, C. T. and Tjeng, L. H. (2010). Local symmetry and magnetic anisotropy in multiferroic MnWO4 and antiferromagnetic CoWO4 studied by soft x-ray absorption spectroscopy. Phys. Rev. B, 82 (18). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

Taubitz, Christian, Hu, Zhiwei ORCID: 0000-0003-0324-2227, Hollmann, Nils, Chin, Yi-Ying ORCID: 0000-0003-2316-0747, Kuepper, Karsten, Tsurkan, Vladimir, Lin, H. -J., Chen, C. T., Tjeng, L. H. and Neumann, Manfred (2010). Fe valence state at the surface of the Fe0.5Cu0.5Cr2S4 spinel. Phys. Status Solidi-Rapid Res. Lett., 4 (11). S. 338 - 340. WEINHEIM: WILEY-V C H VERLAG GMBH. ISSN 1862-6270