Publications
2024
Vanita, V., A. I. Waidha, S. Vasala, P. Puphal, R. Schoch, P. Glatzel, M. Bauer and O. Clemens, Insights into the first multi-transition-metal containing Ruddlesden Popper-type cathode for all-solid-state fluoride Ion batteries, Journal of Materials Chemistry A 12, 8769-8787 (2024).
Wang, L., H. Liu, V. Zimmermann, A. K. Yogi, M. Isobe, M. Minola, M. Hepting, G. Khaliullin, and B. Keimer. Spin-Orbit Excitons in a Correlated Metal: Raman Scattering Study of Sr2RhO4. Physical Review Letters 132, 116502 (2024).
Wang, H, J. Zhang, C. Shen, C. Yang, K. Küster, J. Deuschle, U. Starke, H. Zhang, M. Isobe, D. Huang, P. A. van Aken, and H. Takagi. Direct visualization of stacking-selective self-intercalation in epitaxial Nb1+xSe2 films. Nature Communications 15, 2541 (2024).
Tresguerres-Mata, A. I. F., C. Lanza, J. Taboada-Gutiérrez, J.. R. Matson, G. Álvarez-Pérez, M. Isobe, A. T. Martín-Luengo, J. Duan, S. Partel, M. Vélez, J. Martín-Sánchez, A. Y. Nikitin, J. D. Caldwell, and P. Alonso-González. Observation of naturally canalized phonon polaritons in LiV2O5 thin layers. Nature Communications 15, 2696 (2024).
T. Kubo, K. Kojima, N. Katayama, T. Runčevski, R. E. Dinnebier, A. S. Gibbs, M. Isobe, and H. Sawa. Metastable ordered states induced by low-temperature annealing of 𝛿−Ag2/3V2O5. Physical Review B 109, 104115 (2024).
Caicedo-Dávila, S, A. Cohen, S. G. Motti, M. Isobe, K. M. McCall, M. Grumet, M. V. Kovalenko, O. Yaffe, L. M. Herz, D. H. Fabini, and D. A. Egger. Disentangling the effects of structure and lone-pair electrons in the lattice dynamics of halide perovskites. Nature Communications 15, 4184 (2024).
S. Hayashida, V. Sundaramurthy, P. Puphal, M. Garcia-Fernandez, Ke-Jin Zhou, B. Fenk, M. Isobe, M. Minola, Y.-M. Wu, Y. E. Suyolcu, P. A. van Aken, B. Keimer, and M. Hepting. Investigation of spin excitations and charge order in bulk crystals of the infinite-layer nickelate LaNiO2. Physical Review B 109, 235106 (2024).
Isha, A.K. Bera, G. Kaur, C. Stock, K. Chakraborty, P. Puphal, M. Isobe, K. Küster, Y. Skourski, L. Bhaskaran , S. A. Zvyagin, S. Luther, J. Gronemann, H. Kühne, C. S. Mejía, M. Pregelj, T.C. Hansen, S. D. Kaushik, D. Voneshen, R. Kulkarni, N.P. Lalla, S.M. Yusuf, A. Thamizhavel ,and A.K. Yogi. Sharp quantum phase transition in the frustrated spin-1/2 Ising chain antiferromagnet CaCoV2O7. Physical Review Research 6, L032010 (2024).
Pal, S., P. Dolezal, S. A. Ström, S. Bertaina, A. Pustogow, R. K. Kremer, M. Dressel, and P. Puphal. SrCu(OH)3Cl, an ideal isolated equilateral triangle spin S = 1/2 model system, Physical Review Research 6, 033027 (2024).
Wang, L., H. Liu, V. Zimmermann, A. K. Yogi, M. Isobe, M. Minola, M. Hepting, G. Khaliullin, and B. Keimer. Spin-Orbit Excitons in a Correlated Metal: Raman Scattering Study of Sr2RhO4. Physical Review Letters 132, 116502 (2024).
Wang, H, J. Zhang, C. Shen, C. Yang, K. Küster, J. Deuschle, U. Starke, H. Zhang, M. Isobe, D. Huang, P. A. van Aken, and H. Takagi. Direct visualization of stacking-selective self-intercalation in epitaxial Nb1+xSe2 films. Nature Communications 15, 2541 (2024).
Tresguerres-Mata, A. I. F., C. Lanza, J. Taboada-Gutiérrez, J.. R. Matson, G. Álvarez-Pérez, M. Isobe, A. T. Martín-Luengo, J. Duan, S. Partel, M. Vélez, J. Martín-Sánchez, A. Y. Nikitin, J. D. Caldwell, and P. Alonso-González. Observation of naturally canalized phonon polaritons in LiV2O5 thin layers. Nature Communications 15, 2696 (2024).
T. Kubo, K. Kojima, N. Katayama, T. Runčevski, R. E. Dinnebier, A. S. Gibbs, M. Isobe, and H. Sawa. Metastable ordered states induced by low-temperature annealing of 𝛿−Ag2/3V2O5. Physical Review B 109, 104115 (2024).
Caicedo-Dávila, S, A. Cohen, S. G. Motti, M. Isobe, K. M. McCall, M. Grumet, M. V. Kovalenko, O. Yaffe, L. M. Herz, D. H. Fabini, and D. A. Egger. Disentangling the effects of structure and lone-pair electrons in the lattice dynamics of halide perovskites. Nature Communications 15, 4184 (2024).
S. Hayashida, V. Sundaramurthy, P. Puphal, M. Garcia-Fernandez, Ke-Jin Zhou, B. Fenk, M. Isobe, M. Minola, Y.-M. Wu, Y. E. Suyolcu, P. A. van Aken, B. Keimer, and M. Hepting. Investigation of spin excitations and charge order in bulk crystals of the infinite-layer nickelate LaNiO2. Physical Review B 109, 235106 (2024).
Isha, A.K. Bera, G. Kaur, C. Stock, K. Chakraborty, P. Puphal, M. Isobe, K. Küster, Y. Skourski, L. Bhaskaran , S. A. Zvyagin, S. Luther, J. Gronemann, H. Kühne, C. S. Mejía, M. Pregelj, T.C. Hansen, S. D. Kaushik, D. Voneshen, R. Kulkarni, N.P. Lalla, S.M. Yusuf, A. Thamizhavel ,and A.K. Yogi. Sharp quantum phase transition in the frustrated spin-1/2 Ising chain antiferromagnet CaCoV2O7. Physical Review Research 6, L032010 (2024).
Pal, S., P. Dolezal, S. A. Ström, S. Bertaina, A. Pustogow, R. K. Kremer, M. Dressel, and P. Puphal. SrCu(OH)3Cl, an ideal isolated equilateral triangle spin S = 1/2 model system, Physical Review Research 6, 033027 (2024).
2023
Wang, J., Y.-S. Su, M. Spitaler, K. M. Zoch, C. Krellner, P. Puphal, S. E. Brown, and A. Pustogow. Controlled frustration release on the kagome lattice by uniaxial-strain tuning. Physical Review Letters 131, 256501 (2023).
Puphal, P., M. Y. P. Akbar, M. Hepting, E. Goering, M. Isobe, A. A. Nugroho, B. Keimer, Single crystal synthesis, structure, and magnetism of Pb10−xCux(PO4)6O. APL Materials 11, 101128 (2023).
Puphal, P., V. Sundaramurthy, V. Zimmermann, K. Küster, U. Starke, M. Isobe, B. Keimer, and M. Heptin. Phase formation in hole- and electron-doped rare-earth nickelate single crystals. APL Materials 11, 081107 (2023).
Hepting, M., T. D. Boyko, V. Zimmermann, M. Bejas, Y. E. Suyolcu, P. Puphal, R. J. Green, L. Zinni, J. Kim, D. Casa, M. H. Upton, D. Wong, C. Schulz, M. Bartkowiak, K. Habicht, E. Pomjakushina, G. Cristiani, G. Logvenov, M. Minola, H. Yamase, A. Greco, and B. Keimer. Evolution of plasmon excitations across the phase diagram of the cuprate superconductor La2−xSrxCuO4. Physical Review B 107, 214516 (2023).
Peters, M., K. Kliemt, M. Ocker, B. Wolf, P. Puphal, M. Le Tacon, M. Merz, M. Lang, and C. Krellner. From valence fluctuations to long-range magnetic order in EuPd2(Si1−xGex)2 single crystals. Physical Review Materials 7, 064405 (2023).
Giorgianni, F., B. Wehinger, S. Allenspach, N. Colonna, C. Vicario, P. Puphal, E. Pomjakushina, B. Normand, and Ch. Rüegg. Ultrafast frustration breaking and magnetophononic driving of singlet excitations in a quantum magnet. Physical Review B 107, 184440 (2023).
Wu, Y., P. Puphal, H. Lee , J. Nuss , M. Isobe, B. Keimer, M. Hepting, Y. E. Suyolcu, and P. A. van Aken. Topotactically induced oxygen vacancy order in nickelate single crystals. Physical Review Materials 7, 053609 (2023).
Adamus, P., B. Xu, P. Marsik, A. Dubroka, P. Barabasová, H. Růžičková, P. Puphal, E. Pomjakushina, J. L. Tallon, Y.-L. Mathis, D. Munzar and C. Bernhard. Analogies of phonon anomalies and electronic gap features in the infrared response of Sr14-xCaxCu24O41 and underdoped YBa2Cu3O6+x. Reports on Progress in Physics 86 044502 (2023).
Chatterjee, D., P. Puphal, Q. Barthélemy, J. Willwater, S. Süllow, C. Baines, S. Petit, E. Ressouche, J. Ollivier, K. M. Zoch, C. Krellner, M. Parzer, A. Riss, F. Garmroudi, A. Pustogow, P. Mendels, E. Kermarrec, and F. Bert. From spin liquid to magnetic ordering in the anisotropic kagome Y-kapellasite Y3Cu9(OH)19Cl8: A single-crystal study. Physical Review B 107, 125156 (2023).
Puphal, P., B. Wehinger, J. Nuss, K. Küster, U. Starke, G. Garbarino, B. Keimer, M. Isobe, and M. Hepting, Synthesis and physical properties of LaNiO2 crystals, Physical Review Materials 7, 014804 (2023).
Zimmermann, V., A. K. Yogi, D. Wong, C. Schulz, M. Bartkowiak, K. Habicht, L. Wang, M. Isobe, M. Minola, G. Khaliullin, B. Keimer, and M. Hepting.Coherent propagation of spin-orbit excitons in a correlated metal. Quantum Materials 8, 53 (2023).
Puphal, P., M. Y. P. Akbar, M. Hepting, E. Goering, M. Isobe, A. A. Nugroho, B. Keimer, Single crystal synthesis, structure, and magnetism of Pb10−xCux(PO4)6O. APL Materials 11, 101128 (2023).
Puphal, P., V. Sundaramurthy, V. Zimmermann, K. Küster, U. Starke, M. Isobe, B. Keimer, and M. Heptin. Phase formation in hole- and electron-doped rare-earth nickelate single crystals. APL Materials 11, 081107 (2023).
Hepting, M., T. D. Boyko, V. Zimmermann, M. Bejas, Y. E. Suyolcu, P. Puphal, R. J. Green, L. Zinni, J. Kim, D. Casa, M. H. Upton, D. Wong, C. Schulz, M. Bartkowiak, K. Habicht, E. Pomjakushina, G. Cristiani, G. Logvenov, M. Minola, H. Yamase, A. Greco, and B. Keimer. Evolution of plasmon excitations across the phase diagram of the cuprate superconductor La2−xSrxCuO4. Physical Review B 107, 214516 (2023).
Peters, M., K. Kliemt, M. Ocker, B. Wolf, P. Puphal, M. Le Tacon, M. Merz, M. Lang, and C. Krellner. From valence fluctuations to long-range magnetic order in EuPd2(Si1−xGex)2 single crystals. Physical Review Materials 7, 064405 (2023).
Giorgianni, F., B. Wehinger, S. Allenspach, N. Colonna, C. Vicario, P. Puphal, E. Pomjakushina, B. Normand, and Ch. Rüegg. Ultrafast frustration breaking and magnetophononic driving of singlet excitations in a quantum magnet. Physical Review B 107, 184440 (2023).
Wu, Y., P. Puphal, H. Lee , J. Nuss , M. Isobe, B. Keimer, M. Hepting, Y. E. Suyolcu, and P. A. van Aken. Topotactically induced oxygen vacancy order in nickelate single crystals. Physical Review Materials 7, 053609 (2023).
Adamus, P., B. Xu, P. Marsik, A. Dubroka, P. Barabasová, H. Růžičková, P. Puphal, E. Pomjakushina, J. L. Tallon, Y.-L. Mathis, D. Munzar and C. Bernhard. Analogies of phonon anomalies and electronic gap features in the infrared response of Sr14-xCaxCu24O41 and underdoped YBa2Cu3O6+x. Reports on Progress in Physics 86 044502 (2023).
Chatterjee, D., P. Puphal, Q. Barthélemy, J. Willwater, S. Süllow, C. Baines, S. Petit, E. Ressouche, J. Ollivier, K. M. Zoch, C. Krellner, M. Parzer, A. Riss, F. Garmroudi, A. Pustogow, P. Mendels, E. Kermarrec, and F. Bert. From spin liquid to magnetic ordering in the anisotropic kagome Y-kapellasite Y3Cu9(OH)19Cl8: A single-crystal study. Physical Review B 107, 125156 (2023).
Puphal, P., B. Wehinger, J. Nuss, K. Küster, U. Starke, G. Garbarino, B. Keimer, M. Isobe, and M. Hepting, Synthesis and physical properties of LaNiO2 crystals, Physical Review Materials 7, 014804 (2023).
Zimmermann, V., A. K. Yogi, D. Wong, C. Schulz, M. Bartkowiak, K. Habicht, L. Wang, M. Isobe, M. Minola, G. Khaliullin, B. Keimer, and M. Hepting.Coherent propagation of spin-orbit excitons in a correlated metal. Quantum Materials 8, 53 (2023).
2022
Tseng, Y., J. Thomas, W. Zhang, E. Paris, P. Puphal, R. Bag, G. Deng, T. C. Asmara, V. N. Strocov, S. Singh, E. Pomjakushina, U. Kumar, A. Nocera, H. M. Ronnow, S. Johnston and T. Schmitt. Crossover of high-energy spin fluctuations from collective triplons to localized magnetic excitations in doped Sr14-xCaxCu24O41 cuprate ladders. npj Quantum Materials 7, 92 (2022).
Ortiz, R., P. Puphal, M. Klett, F. Hotz, R. K. Kremer, H. Trepka, M. Hemmida, H.-. Krug von Nidda, M. Isobe, R. Khasanov, H. Luetkens, P. Hansmann, B. Keimer, T. Schäfer, and M. Hepting. Magnetic correlations in the infinite-layer nickelates: An experimental and theoretical multimethod study. Physical Review Research 4, 023093 (2022).
Puphal, P., V. Pomjakushin, R. Ortiz, S. Hammoud, M. Isobe, B. Keimer, and M. Hepting. Investigation of Hydrogen Incorporations in Bulk Infinite-layer Nickelates. Frontiers of Physics 10, 842578 (2022).
Porée, V., E. Lhotel, S. Petit, V. Pomjakushin, P. Puphal, A. Krajewska, N. Gauthier, A. H. Clark, D. J. Gawryluk, H. C. Walker, T. Fennell, and R. Sibille. Crystal-field states and defect levels in candidate quantum spin ice Ce2Hf2O7. Physical Review Materials 6, 044406 (2022).
Whangbo, M.-H., H.-J. Koo, E. Brücher, P. Puphal, R. K. Kreme. Absence of Spin Frustration in the Kagome Layers of Cu2+ Ions in Volborthite Cu3V2O7(OH)2-2H2O and Observation of the Suppression and Re-Entrance of Specific Heat Anomalies in Volborthite under an External Magnetic Field. Condensed Matter 7, 24(2022).
Biesner, T., S. Roh, A. Razpopov, J. Willwater, S. Süllow, Y. Li, K. M. Zoch, M. Medarde, J. Nuss, D. Gorbunov, Yurii Skourski, A. Pustogow, S. E. Brown, C. Krellner, R. Valenti, P. Puphal, M. Dressel. Multi-Center Magnon Excitation Open the Entire Brillouin Zone to Terahertz Magnetometry of Quantum Magnets. Advanced Quantum Technologies 5, 2200023 (2022).
Yamaguchi, T., M. Okawa, H. Wadati, T.Z. Regier, T. Saitoh, Y. Takagi, A. Yasui, M. Isobe, Y. Ueda, and T. Mizokawa. Electronic Structure of Spinel-Type MgTi2O4: Valence Change at Surface and Effect of Fe Substitution for Mg. Journal of the Physical Society of Japan 91, 074704 (2022).
Golež, D., S. K. Y. Dufresne, M.J Kim, F. Boschini, H. Chu, Y. Murakami, G. Levy, A. K. Mills, S. Zhdanovich, M. Isobe, H. Takagi, S. Kaiser, P. Werner, D. J. Jones, A. Georges, A. Damascelli, and A. J. Millis. Unveiling the underlying interactions in Ta2NiSe5 from photoinduced lifetime change. Physical Review B 106, L121106 (2022).
Minu, K., G. M. McNally, H. Kim, M. Oudah, A. S. Gibbs, P. Manuel, R. J. Green, R. Sutarto, T. Takayama, A. Yaresko, U. Wedig, M. Isobe, R. K. Kremer, D. A. Bonn, B. Keimer, and H. Takagi. Superconductivity in (Ba,K)SbO3. Nature Materials 21, 627 (2022).
Maurya, A., M. Uhlarz, M. Isobe, A. Thamizhavel, and S. K. Dhar. Large magnetic saturation field in the antiferromagnet EuIrSi3. Journal of Magnetism and Magnetic Materials 564, 170084 (2022).
Ortiz, R., P. Puphal, M. Klett, F. Hotz, R. K. Kremer, H. Trepka, M. Hemmida, H.-. Krug von Nidda, M. Isobe, R. Khasanov, H. Luetkens, P. Hansmann, B. Keimer, T. Schäfer, and M. Hepting. Magnetic correlations in the infinite-layer nickelates: An experimental and theoretical multimethod study. Physical Review Research 4, 023093 (2022).
Puphal, P., V. Pomjakushin, R. Ortiz, S. Hammoud, M. Isobe, B. Keimer, and M. Hepting. Investigation of Hydrogen Incorporations in Bulk Infinite-layer Nickelates. Frontiers of Physics 10, 842578 (2022).
Porée, V., E. Lhotel, S. Petit, V. Pomjakushin, P. Puphal, A. Krajewska, N. Gauthier, A. H. Clark, D. J. Gawryluk, H. C. Walker, T. Fennell, and R. Sibille. Crystal-field states and defect levels in candidate quantum spin ice Ce2Hf2O7. Physical Review Materials 6, 044406 (2022).
Whangbo, M.-H., H.-J. Koo, E. Brücher, P. Puphal, R. K. Kreme. Absence of Spin Frustration in the Kagome Layers of Cu2+ Ions in Volborthite Cu3V2O7(OH)2-2H2O and Observation of the Suppression and Re-Entrance of Specific Heat Anomalies in Volborthite under an External Magnetic Field. Condensed Matter 7, 24(2022).
Biesner, T., S. Roh, A. Razpopov, J. Willwater, S. Süllow, Y. Li, K. M. Zoch, M. Medarde, J. Nuss, D. Gorbunov, Yurii Skourski, A. Pustogow, S. E. Brown, C. Krellner, R. Valenti, P. Puphal, M. Dressel. Multi-Center Magnon Excitation Open the Entire Brillouin Zone to Terahertz Magnetometry of Quantum Magnets. Advanced Quantum Technologies 5, 2200023 (2022).
Yamaguchi, T., M. Okawa, H. Wadati, T.Z. Regier, T. Saitoh, Y. Takagi, A. Yasui, M. Isobe, Y. Ueda, and T. Mizokawa. Electronic Structure of Spinel-Type MgTi2O4: Valence Change at Surface and Effect of Fe Substitution for Mg. Journal of the Physical Society of Japan 91, 074704 (2022).
Golež, D., S. K. Y. Dufresne, M.J Kim, F. Boschini, H. Chu, Y. Murakami, G. Levy, A. K. Mills, S. Zhdanovich, M. Isobe, H. Takagi, S. Kaiser, P. Werner, D. J. Jones, A. Georges, A. Damascelli, and A. J. Millis. Unveiling the underlying interactions in Ta2NiSe5 from photoinduced lifetime change. Physical Review B 106, L121106 (2022).
Minu, K., G. M. McNally, H. Kim, M. Oudah, A. S. Gibbs, P. Manuel, R. J. Green, R. Sutarto, T. Takayama, A. Yaresko, U. Wedig, M. Isobe, R. K. Kremer, D. A. Bonn, B. Keimer, and H. Takagi. Superconductivity in (Ba,K)SbO3. Nature Materials 21, 627 (2022).
Maurya, A., M. Uhlarz, M. Isobe, A. Thamizhavel, and S. K. Dhar. Large magnetic saturation field in the antiferromagnet EuIrSi3. Journal of Magnetism and Magnetic Materials 564, 170084 (2022).
2021
Abdo, M., S.X Sheng, S. Rolf-Pissarczyk, L. Arnhold, J.A.J Burgess, M. Isobe, L. Malavolti, and S. Loth. Variable Repetition Rate THz Source for Ultrafast Scanning Tunneling Microscopy. ACS Photonics 8, 702-708 (2021).
Kosugi, Y., M. Goto, Z. Tan, D. Kan, M. Isobe, K. Yoshii, M. Mizumaki, A. Fujita, H. Takagi, and Y. Shimakawa. Giant multiplecaloric effects in charge transition ferrimagnet. Scientific Reports 11, 12682 (2021).
Allenspach, S., P. Puphal, J. Link, I. Heinmaa, E. Pomjakushina ,C. Krellner, J. Lass, G. S. Tucker, C. Niedermayer, S. Imajo, Y. Kohama, K. Kindo, S. Krämer, M. Horvatic´, M. Jaime, A. Madsen, A. Mira, N. Laflorencie, F. Mila, B. Normand, C. Rüegg, R. Stern, and F. Weickert. Revealing three-dimensional quantum criticality by Sr substitution in Han purple. Physical Review Research 3, 023177 (2021).
Tang, F., P. Wang, M. He, M. Isobe, G. Gu, Q. Li, L. Zhang, and J. H. Smet. Two-Dimensional Quantum Hall Effect and Zero Energy State in Few-Layer ZrTe5. Nano Letters 21, 5998−6004 (2021).
Puphal, P., Y.-M. Wu, K. Fürsich, H. Lee, J. Nuss, Y. E. Suyolcu, P. A. van Aken, B. Keimer, M. Isobe, and M. Hepting. La0.8Ca0.2NiO2 single crystals of substituted infinite layer nickelates. Science Advances 7, eabl8091 (2021).
Guratinder, K., M. Schmidt, H. C. Walker, R. Bewley, M. Wörle, D. Cabra, S. A. Osorio, M. Villalba, A. K. Madsen, L. Keller, A. Wildes, P. Puphal, A. Cervellino, Ch. Rüegg, and O. Zaharko. Magnetic correlations in the trangular antiferromagnet FeGa2S4. Physical Review B 104, 064412 (2021).
He, .Q, X. Que, L. Zhou, M. Isobe, D. Huang, and H. Takagi. Tunneling-tip-induced collapse of the charge gap in the excitonic insulator Ta2NiSe5. Phys. Rev. Research 3, L032074 (2021).
Zhang S.Y., J. A.N. Bruin, Y. Matsumoto, M. Isobe, and H. Takagi. Thermal transport signatures of the excitonic transition and associated phonon softening in the layered chalcogenide Ta2NiSe5. Physical Review B 104, L121201 (2021).
Kosugi, Y., M. Goto, Z. Tan, D. Kan, M. Isobe, K. Yoshii, M. Mizumaki, A. Fujita, H. Takagi, and Y. Shimakawa. Giant multiplecaloric effects in charge transition ferrimagnet. Scientific Reports 11, 12682 (2021).
Allenspach, S., P. Puphal, J. Link, I. Heinmaa, E. Pomjakushina ,C. Krellner, J. Lass, G. S. Tucker, C. Niedermayer, S. Imajo, Y. Kohama, K. Kindo, S. Krämer, M. Horvatic´, M. Jaime, A. Madsen, A. Mira, N. Laflorencie, F. Mila, B. Normand, C. Rüegg, R. Stern, and F. Weickert. Revealing three-dimensional quantum criticality by Sr substitution in Han purple. Physical Review Research 3, 023177 (2021).
Tang, F., P. Wang, M. He, M. Isobe, G. Gu, Q. Li, L. Zhang, and J. H. Smet. Two-Dimensional Quantum Hall Effect and Zero Energy State in Few-Layer ZrTe5. Nano Letters 21, 5998−6004 (2021).
Puphal, P., Y.-M. Wu, K. Fürsich, H. Lee, J. Nuss, Y. E. Suyolcu, P. A. van Aken, B. Keimer, M. Isobe, and M. Hepting. La0.8Ca0.2NiO2 single crystals of substituted infinite layer nickelates. Science Advances 7, eabl8091 (2021).
Guratinder, K., M. Schmidt, H. C. Walker, R. Bewley, M. Wörle, D. Cabra, S. A. Osorio, M. Villalba, A. K. Madsen, L. Keller, A. Wildes, P. Puphal, A. Cervellino, Ch. Rüegg, and O. Zaharko. Magnetic correlations in the trangular antiferromagnet FeGa2S4. Physical Review B 104, 064412 (2021).
He, .Q, X. Que, L. Zhou, M. Isobe, D. Huang, and H. Takagi. Tunneling-tip-induced collapse of the charge gap in the excitonic insulator Ta2NiSe5. Phys. Rev. Research 3, L032074 (2021).
Zhang S.Y., J. A.N. Bruin, Y. Matsumoto, M. Isobe, and H. Takagi. Thermal transport signatures of the excitonic transition and associated phonon softening in the layered chalcogenide Ta2NiSe5. Physical Review B 104, L121201 (2021).
2020
Krajewska, A., T. Takayama, R.E. Dinnebier, A. Yaresko, K. Ishii, M. Isobe, and H. Takagi. Almost pure Jeff = 1/2 Mott state of In2Ir2O7 in the limit of reduced intersite hopping. Physical Review B 101, 121101 (2020).
Kim, M.J., A. Schulz, T. Takayama, M. Isobe, T. Takagi, and S. Kaiser. Phononic soft mode behavior and a strong electronic background across the structural phase transition in the excitonic insulator Ta2NiSe5. Physical Review Research 2, 042039 (2020).
Tay, D., T. Shang, P. Puphal, E. Pomjakushina, H.R. Ott, and T. Shiroka. Unusual 27Al NMR
shift in the Weyl-fermion systems LaAlGe and PrAlGe. Physical Review B 102, 241109
(2020).
Kim, M.J., A. Schulz, T. Takayama, M. Isobe, T. Takagi, and S. Kaiser. Phononic soft mode behavior and a strong electronic background across the structural phase transition in the excitonic insulator Ta2NiSe5. Physical Review Research 2, 042039 (2020).
Tay, D., T. Shang, P. Puphal, E. Pomjakushina, H.R. Ott, and T. Shiroka. Unusual 27Al NMR
shift in the Weyl-fermion systems LaAlGe and PrAlGe. Physical Review B 102, 241109
(2020).
2019
Forslund, O.K., D. Andreica, Y. Sassa, H.Nozaki, I. Umegaki, E. Nocerino, V. Jonsson, O. Tjernberg, Z.Guguchia, Z. Shermadini, R.Khasanov, M. Isobe, H. Takagi, Y. Ueda, J. Sugiyama, and M. Mansson. Magnetic phase diagram of K2Cr8O16 clarified by high-pressure muon spin spectroscopy. Scientific Reports 9, 1141 (2019).
Yogi, A., A.K. Bera, A.Mohan, R.Kulkarni, S.M. Yusuf, A.Hoser, A.A. Tsirlin, M. Isobe, and
A. Thamizhavel. Zigzag spin chains in the spin-5/2 antiferromagnet Ba2Mn(PO4)2. Inorganic
Chemistry Frontiers 6, 2736-2746 (2019).
Yogi, A., A.K. Bera, A.Mohan, R.Kulkarni, S.M. Yusuf, A.Hoser, A.A. Tsirlin, M. Isobe, and
A. Thamizhavel. Zigzag spin chains in the spin-5/2 antiferromagnet Ba2Mn(PO4)2. Inorganic
Chemistry Frontiers 6, 2736-2746 (2019).
2018
Sugiyama, J., H. Nozaki, I. Umegaki, K. Miwa, W.Higemoto, E.J. Ansaldo, J.H. Brewer, H. Sakurai, M. Isobe, H. Takagi, and M. Mansson. Magnetism of the A-site ordered perovskites CaCu3Cr4O12 and LaCu3Cr4O12. Physical Review B 97, 024416 (2018).
Etter, M., M. Isobe, H. Sakurai, A. Yaresko, R.E. Dinnebier, and H. Takagi. Charge disproportionation of mixed-valent Cr triggered by Bi lone-pair effect in the A-site-ordered perovskite BiCu3Cr4O12. Physical Review B 97, 195111 (2018).
Liarkin, T., R.D. Dawson, M. Hoppner, T. Takayama, M. Isobe, Y.L. Mathis, H. Takagi, B. Keimer, and A.V. Boris. Infrared phonon spectra of quasi-one-dimensional Ta2NiSe5 and Ta2NiS5. Physical Review B 98, 125113 (2018).
Etter, M., M. Isobe, H. Sakurai, A. Yaresko, R.E. Dinnebier, and H. Takagi. Charge disproportionation of mixed-valent Cr triggered by Bi lone-pair effect in the A-site-ordered perovskite BiCu3Cr4O12. Physical Review B 97, 195111 (2018).
Liarkin, T., R.D. Dawson, M. Hoppner, T. Takayama, M. Isobe, Y.L. Mathis, H. Takagi, B. Keimer, and A.V. Boris. Infrared phonon spectra of quasi-one-dimensional Ta2NiSe5 and Ta2NiS5. Physical Review B 98, 125113 (2018).