Multiferroizität in niedrigdimensionalen magnetischen Systemen mit unterschiedlichen Spins

• Applicant: Professor Dr. Rüdiger Klingeler
• Subject Area: Experimental Condensed Matter Physics
• Term: from 2018 to 2022
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 388987880

• Final Report Year: 2023

Final Report Abstract

In the project we synthesized and studied new frustrated correlated electron systems as well as single crystals of established ones. The main experimental methods applied were Electron Spin Resonance studies, dilatometry, magnetization and calorimetry, and single crystal growth. Starting with howardevansites and other quasi-1D materials, we extended our work to 2D materials and also included further magnetoelectrics such as titanates as well as other highly frustrated materials. Both the pandemia and eventually the Russian attack war forced significant changes in the work plan. Still, having had access to a variety of new materials in the very center of the group’s research activities, hosting Russian guest researchers before 2022 in Heidelberg, the project turned out to be an incubator to attract students, to initiate lots of new collaborations, and to provide the preliminary work for two follow-up large-scale project. The main scientific results concern: (1) Magnetoelectric and magnetoelastic coupling in quasi-1D systems; (2) Magnetoelastic coupling in 2D van-der-Waals materials; (3) Phase diagrams, low-energy magnons and spin-lattice coupling in titanates. (4) Magnetic phase diagrams and spin-freezing in highly frustrated rare-earth systems.

Publications

• Electronic structure and magnetic properties of the strong-rung spin-1 ladder compound Rb3Ni2(NO3)7. Physical Review B, 97(14).
  Pchelkina, Z. V.; Mazurenko, V. V.; Volkova, O. S.; Deeva, E. B.; Morozov, I. V.; Shutov, V. V.; Troyanov, S. I.; Werner, J.; Koo, C.; Klingeler, R. & Vasiliev, A. N.
  
• Magnetism and the phase diagram of MnSb2O6. Physical Review B, 97(22).
  Koo, C.; Werner, J.; Tzschoppe, M.; Abdel-Hafiez, M.; Biswas, P. K.; Sarkar, R.; Klauss, H.-H.; Raganyan, G. V.; Ovchenkov, E. A.; Nikulin, A. Yu.; Vasiliev, A. N.; Zvereva, E. A. & Klingeler, R.
  
• Magnetoelastic coupling and ferromagnetic-type in-gap spin excitations in multiferroic α-Cu2V2O7. New Journal of Physics, 20(6), 063045.
  Wang, L.; Werner, J.; Ottmann, A.; Weis, R.; Abdel-Hafiez, M.; Sannigrahi, J.; Majumdar, S.; Koo, C. & Klingeler, R.
  
• High magnetic field phase diagram and failure of the magnetic Grüneisen scaling in LiFePO4. Physical Review B, 99(21).
  Werner, J.; Sauerland, S.; Koo, C.; Neef, C.; Pollithy, A.; Skourski, Y. & Klingeler, R.
  
• Magnetic properties of high-pressure optical floating-zone grown LaNiO3 single crystals. Journal of Crystal Growth, 524, 125157.
  Dey, Kaustav; Hergett, Waldemar; Telang, Prachi; Abdel-Hafiez, Mahmoud M. & Klingeler, Rüdiger
  
• The Complex Electronic Phase Diagram of Single-Crystalline R2PdSi3(R = Ho, Dy) Studied by Thermal Expansion and Magnetostriction. Journal of the Physical Society of Japan, 88(9), 094709.
  Wang, Liran; Tran, Binh; He, Mingquan; Meingast, Christoph; Abdel-Hafiez, Mahmoud; Cao, Chongde; Bitterlich, Holger; Löser, Wolfgang & Klingeler, Rüdiger
  
• The decisive role of magnetic anisotropy in honeycomb layered Li3Ni2SbO6 and Na3Ni2SbO6. Journal of Magnetism and Magnetic Materials, 481, 100-103.
  Werner, J.; Hergett, W.; Park, J.; Koo, C.; Zvereva, E.A.; Vasiliev, A.N. & Klingeler, R.
  
• Antisite disorder in the battery material LiFePO4. Physical Review Materials, 4(11).
  Werner, J.; Neef, C.; Koo, C.; Zvyagin, S.; Ponomaryov, A. & Klingeler, R.
  
• Magnetic phase diagram and magnetoelastic coupling of NiTiO3. Physical Review B, 101(19).
  Dey, K.; Sauerland, S.; Werner, J.; Skourski, Y.; Abdel-Hafiez, M.; Bag, R.; Singh, S. & Klingeler, R.
  
• Structural and physical properties of trilayer nickelates R4Ni3O10 (R = La, Pr, and Nd). Physical Review B, 102(19).
  Rout, Dibyata; Mudi, Sanchayeta Ranajit; Hoffmann, Marco; Spachmann, Sven; Klingeler, Rüdiger & Singh, Surjeet
  
• The first pentagonal-bipyramidal vanadium(iii) complexes with a Schiff-base N3O2pentadentate ligand: synthesis, structure and magnetic properties. Dalton Transactions, 49(43), 15287-15298.
  Bazhenova, Tamara A.; Zorina, Leokadiya V.; Simonov, Sergey V.; Mironov, Vladimir S.; Maximova, Olga V.; Spillecke, Lena; Koo, Changhyun; Klingeler, Rüdiger; Manakin, Yuriy V.; Vasiliev, Alexander N. & Yagubskii, Eduard B.
  
• Thermodynamic and resonant properties of mixed spin compounds ACuFe2(VO4)3 (A = Li, Na). Journal of Alloys and Compounds, 842, 155763.
  Koshelev, A.; Shvanskaya, L.; Volkova, O.; Zakharov, K.; Theuss, F.; Koo, C.; Klingeler, R.; Kamusella, S.; Klauss, H.-H.; Kundu, S.; Bachhar, S.; Mahajan, A.V.; Khuntia, P.; Khanam, D.; Rahaman, B.; Saha-Dasgupta, T. & Vasiliev, A.
  
• Exceptional field dependence of antiferromagnetic magnons in LiFePO4. Physical Review B, 103(17).
  Werner, J.; Neef, C.; Koo, C.; Ponomaryov, A.; Zvyagin, S. & Klingeler, R.
  
• Magnetic phase diagram, magnetoelastic coupling, and Grüneisen scaling in CoTiO3. Physical Review B, 104(1).
  Hoffmann, M.; Dey, K.; Werner, J.; Bag, R.; Kaiser, J.; Wadepohl, H.; Skourski, Y.; Abdel-Hafiez, M.; Singh, S. & Klingeler, R.
  
• Magnetoelastic coupling and Grüneisen scaling in NdB4. Physical Review B, 103(10).
  Ohlendorf, R.; Spachmann, S.; Fischer, L.; Dey, K.; Brunt, D.; Balakrishnan, G.; Petrenko, O. A. & Klingeler, R.
  
• Magnetoelastic coupling and phases in the skyrmion lattice magnet Gd2PdSi3 discovered by high-resolution dilatometry. Physical Review B, 103(18).
  Spachmann, S.; Elghandour, A.; Frontzek, M.; Löser, W. & Klingeler, R.
  
• Magnetostructural coupling in ilmenite-type NiTiO3. Physical Review B, 103(13).
  Dey, K.; Sauerland, S.; Ouladdiaf, B.; Beauvois, K.; Wadepohl, H. & Klingeler, R.
  
• Quasi-1D XY antiferromagnet Sr2Ni(SeO3)2Cl2 at Sakai-Takahashi phase diagram. Scientific Reports, 11(1).
  Kozlyakova, E. S.; Moskin, A. V.; Berdonosov, P. S.; Gapontsev, V. V.; Streltsov, S. V.; Uhlarz, M.; Spachmann, S.; ElGhandour, A.; Klingeler, R. & Vasiliev, A. N.
  
• Exotic magnetic and electronic properties of layered CrI3 single crystals under high pressure. Physical Review B, 105(8).
  Ghosh, Anirudha; Singh, D.; Aramaki, T.; Mu, Qingge; Borisov, V.; Kvashnin, Y.; Haider, G.; Jonak, M.; Chareev, D.; Medvedev, S. A.; Klingeler, R.; Mito, M.; Abdul-Hafidh, E. H.; Vejpravova, J.; Kalbàč, M.; Ahuja, R.; Eriksson, Olle & Abdel-Hafiez, Mahmoud
  
• Field induced spin freezing and low temperature heat capacity of disordered pyrochlore oxide Ho2Zr2O7. Journal of Physics: Condensed Matter, 34(24), 245801.
  Sheetal, N.A.; Elghandour, A.; Klingeler, R. & Yadav, C. S.
  
• Linear magnetoelastic coupling and magnetic phase diagrams of the buckled-kagomé antiferromagnet Cu3Bi(SeO3)2O2Cl. Scientific Reports, 12(1).
  Spachmann, S.; Berdonosov, P.; Markina, M.; Vasiliev, A. & Klingeler, R.
  
• Low-energy magnon excitations and emerging anisotropic nature of short-range order in CrI3. Physical Review B, 106(21).
  Jonak, M.; Walendy, E.; Arneth, J.; Abdel-Hafiez, M. & Klingeler, R.
  
• Magnetic properties of the triangular-lattice antiferromagnets Ba3RB9O18 (R=Yb, Er). Physical Review B, 106(10).
  Khatua, J.; Pregelj, M.; Elghandour, A.; Jagličic, Z.; Klingeler, R.; Zorko, A. & Khuntia, P.
  
• Role of magnetoelastic coupling and magnetic anisotropy in MnTiO3. Physical Review B, 106(17).
  Gries, L.; Jonak, M.; Elghandour, A.; Dey, K. & Klingeler, R.
  
• Strong effects of uniaxial pressure and short-range correlations inCr2Ge2Te6. Physical Review Research, 4(2).
  Spachmann, S.; Elghandour, A.; Selter, S.; Büchner, B.; Aswartham, S. & Klingeler, R.
  
• Uniaxial pressure effects in the two-dimensional van der Waals ferromagnet CrI3. Physical Review B, 105(6).
  Arneth, J.; Jonak, M.; Spachmann, S.; Abdel-Hafiez, M.; Kvashnin, Y. O. & Klingeler, R.
  
• Exfoliablity, magnetism, energy storage and stability of metal thiophosphate nanosheets made in liquid medium. 2D Materials, 10(2), 024003.
  Synnatschke, Kevin; van Dinter, Jonas; Müller, Alina; Tiede, David; Spillecke, Lena; Shao, Shouqi; Kelly, Daniel; Konecny, Jan; Konkena, Bharathi; McCrystall, Mark; Saigal, Nihit; Wurstbauer, Ursula; Bensch, Wolfgang; Sofer, Zdeněk; Coleman, Jonathan N.; Klingeler, Rüdiger; Haigh, Sarah J. & Backes, Claudia
  
• Magnetic anisotropy, magnetoelastic coupling, and the magnetic phase diagram of Ni0.25Mn0.75TiO3. Physical Review B, 108(1).
  Elghandour, A.; Gries, L.; Singer, L.; Hoffmann, M.; Spachmann, S.; Uhlarz, M.; Dey, K. & Klingeler, R.
  
• Magnetic circular dichroism in the dd excitation in the van der Waals magnet CrI3 probed by resonant inelastic x-ray scattering. Physical Review B, 107(11).
  Ghosh, Anirudha; Jönsson, H. Johan M.; Mukkattukavil, Deepak John; Kvashnin, Yaroslav; Phuyal, Dibya; Thunström, Patrik; Agåker, Marcus; Nicolaou, Alessandro; Jonak, Martin; Klingeler, Rüdiger; Kamalakar, M. Venkata; Sarkar, Tapati; Vasiliev, Alexander N.; Butorin, Sergei M.; Eriksson, Olle & Abdel-Hafiez, Mahmoud
  
• Sonication-assisted liquid exfoliation and size-dependent properties of magnetic two-dimensional α-RuCl3. Journal of Physics D: Applied Physics, 56(27), 274001.
  Synnatschke, Kevin; Jonak, Martin; Storm, Alexander; Laha, Sourav; Köster, Janis; Petry, Julian; Ott, Steffen; Szydłowska, Beata; Duesberg, Georg S.; Kaiser, Ute; Klingeler, Rüdiger; Lotsch, Bettina V. & Backes, Claudia
  
• Strong uniaxial pressure dependencies evidencing spin-lattice coupling and spin fluctuations in Cr2Ge2Te6. Physical Review B, 107(18).
  Spachmann, S.; Selter, S.; Büchner, B.; Aswartham, S. & Klingeler, R.