Prof. Dr. Gertrud Zwicknagl

room A 307
phone +49 531 391 5206
e-mail ( g.zwicknagl
address Technische Universität Braunschweig
Institut für Mathematische Physik
Mendelssohnstraße 3
38106 Braunschweig

Recent and selected publications

A Recent reviews and chapters in books

  1. Gertrud Zwicknagl, "Quantum Critical Heavy Fermion Metal YbRh2Si2", to appear in Proceedings of the 50th Karpacz Winter School of Theoretical Physics, World Scientific Publishing (2015)
  2. R. Hott, R. Kleiner, T. Wolf, G. Zwicknagl, "Review on Superconducting Materials", in "Applied Superconductivity" (Ed. P. Seidel), Vol. I, Wiley-VCH, Berlin (2015), pp. 26
  3. G. Zwicknagl, "Novel states in Quantum Matter", Physica Macedonica 61,1 (2012)
  4. Gertrud Zwicknagl and Jochen Wosnitza, ”Population Imbalance and Inhomogeneous Superconducting Phases", invited contribution to 50 years of BCS Theory, ed. L. N. Cooper (2010)
  5. G. Zwicknagl, "100 years of superconductivity: Present understanding and perspectives", Physica Macedonica 59,1 (2010)
  6. Peter Fulde, Peter Thalmeier and Gertrud Zwicknagl, ”Strongly Correlated Electrons”, in Solid State Physics, Advances in Research and Applications, Vol. 60 p.1 (2006), pdf
  7. P. Thalmeier, G. Zwicknagl, G. Sparn and F. Steglich, ”Superconductivity in Heavy Fermion Compounds”, in ”Frontiers in Superconducting Materials”, ed. A. V. Narlikar, (Springer Verlag 2005), p. 109
  8. Roland Hott, Reinhold Kleiner, Thomas Wolf and Gertrud Zwicknagl, ”Superconducting Materials -A Topical Overview”, in ”Frontiers in Superconducting Materials”, ed. A. V. Narlikar, (Springer Verlag 2005), p.1
  9. P. Thalmeier and G. Zwicknagl, ”Co-existence of Superconductivity and Magnetism”, in ”Handbook of the Physics and Chemistry of Rare Earths”, ed. K. Gschneidner, Vol. 34, p. 135, 2004


B Selected articles

  1. G. Zwicknagl und J. Wosnitza, "Kompromissbereite Supraleitung", erscheint in Physik Journal 03/2015
  2. K. Kummer, S. Ptil, A. Chikina, M. Güttler, M. Höppner, A. Generalov, S. Danzenbächer, S. Seiro, A. Hannaske, C. Krellner, Yu. Kucherenko, M. Shi, M. Radovic, E. Rienks, G. Zwicknagl, K. Matho, J. W. Allen, C. Laubschat, C. Geibel, and D. V. Vyalikh, "Temperature-invariant Fermi surface in the Kondo lattice YbRh2Si2", to appear in Phys. Rev. X
  3. Gertrud Zwicknagl, "Heavy Quasiparticles in Yb Compounds: The Renormalized Band Approach", Acta Physica Polonica A 126, 286 (2014)
  4. A. W. Heine, D. Tutuc, G. Zwicknagl, D. Schuh, W. Wegscheider, and R. J. Haug: "RKKY Interaction in a Chirally Coupled Double Quantum Dot System", AIP Conference Proceedings Vol 1556, Issue 1, p. 305 (2013)
  5. S. Friedemann, S.K. Goh, P.M.C. Rourke, P. Reiss, M.L. Sutherland, F.M. Grosche, G. Zwicknagl and Z. Fisk: "Electronic Structure of LuRh2Si2: 'Small' Fermi Surface Reference to YbRh2Si2", New J. Phys. 15, 093014 (2013)
  6. H.R. Naren, S. Friedemann, G. Zwicknagl, C. Krellner, C. Geibel, F. Steglich and S Wirth: "Lifshitz transitions and quasiparticle de-renormalization in YbRh2Si2", New J. Phys. 15, 093032 (2013)
  7. H. Pfau, R. Daou, S. Lausberg, H.R. Naren, M. Brando, S. Friedemann, S. Wirth, T. Westerkamp, U. Stockert, P. Gegenwart, C. Krellner, C. Geibel, G. Zwicknagl, and F. Steglich: "Interplay between Kondo suppression and Lifshitz transitions in YbRh2Si2 at high magnetic fields", Phys. Rev. Lett. 110, 256403 (2013)
  8. G. Zwicknagl: "5f Electron correlations and core level photoelectron spectra of Uranium compounds", Phys. Status Solidi B 250, 634 (2013)
  9. P. Reiss, P. Rourke, G. Zwicknagl, M. Grosche, S. Friedemann: "LuRh2Si2: Sensitivity of the Fermi Surface on the Si z-position", Phys. Status Solidi B 250, 498 (2013)
  10. M. Siahatgar, B. Schmidt, P. Thalmeier, and G. Zwicknagl: "Moment screening in the correlated Kondo lattice model", New J. Phys 14, 103005 (2012)
  11. G. Zwicknagl: "Towards a better understanding of low-energy excitations in emergent materials", Ann. Phys. (Berlin) 524, No. 8, A123–A124 (2012) (preprint)
  12. G. Zwicknagl: "Localization vs delocalization of 5f electrons in actinides: Dual nature and electron spectroscopies", Mater. Res. Soc. Symp. Proc. 1444 (2012)
  13. S. Ernst, S. Kirchner, C. Krellner, C. Geibel, G. Zwicknagl, F. Steglich, and S.Wirth: "Emerging local Kondo screening and spatial coherence in the heavy fermion metal YbRh2Si2", Nature 474, 362 (2011) (preprint) 
  14. G. Zwicknagl: "Magnetic field-induced anomalies and Kondo effect in lanthanide in heavy-electron systems", J. Phys. Soc. Jpn. 80, SA010 (2011) (local pdf)
  15. G. Zwicknagl: "Field-induced suppression of the heavy-fermion state in YbRh2Si2", J. Phys: Cond. Matter 23, 094215 (2011) (local pdf)
  16. G. Zwicknagl: 100 years of superconductivity: present understanding and perspectives, Physica Macedonica 59, 1-12 (2010) (local pdf)
  17. G. Zwicknagl and J. Wosnitza: "Breaking translational invariance by population imbalance: The Fulde-Ferrell-Larkin-Ovchinikov states", Int. J. Mod. Phys. 20, 3915 (2010)
  18. S. Friedemann, S.Wirth, N. Oeschler, C. Krellner, C. Geibel, F. Steglich, S. MaQuilon, Z. Fisk, S. Paschen, and G. Zwicknagl: "Hall effect measurements and electronic structure calculations on YbRh2Si2 and its reference compounds LuRh2Si2 and YbIr2Si2", Phys. Rev. B 82, 035103 (2010).
  19. K.-Y. Choi, P. Lemmens, I. Eremin, G. Zwicknagl, H. Berger, G. L. Sun, D. L. Sun, and C. T. Lin: "Self-energy effects and electron-phonon coupling in Fe-As superconductors"J. Phys.: Cond. Matter 22, 115802 (2010).
  20. M. Neef, K. Doll, and G. Zwicknagl: "Ab initio study of pressureinduced metal-insulator transition in cubic FeGe", Phys. Rev. B 80, 035122 (2009)
  21. G. Zwicknagl: "Quasiparticles, Magnetization Dynamics, and Thermopower of Yb-Based Heavy-Fermion Compounds" in V. Zlatic and A. C. Hewson (eds.): Properties and Applications of Thermoelectric Materials: NATO Science for Peace and Security Series B: Physics and Biophysics 133, pp. 133 - 139, Springer (2009)
  22. G. Zwicknagl, P. Thalmeier, and P. Fulde: "Field-dependent mass enhancement in Pr1-xLaxOs4Sb12 from aspherical Coulomb scattering", Phys. Rev. B 79, 115132 (2009)
  23. I. Eremin, G. Zwicknagl, P. Thalmeier, and P. Fulde: Feedback spin resonance in superconducting CeCu2Si2 and CeCoIn5, Phys. Rev. Lett. 101, 187001 (2008)
  24. R. Judele, M. J. Dix, S. Laschat, A. Baro, M. Nimtz, D. Menzel, J. Schoenes, K. Doll, G. Zwicknagl, and M. Niemeyer: "Synthesis and Magnetic Properties of Novel Azamacrocyclic LnIII, CuII, FeIII and SrII Complexes and Conformational Analysis of the Ligands", Z. Anorg. Allg. Chemie 634, 299 (2008)
  25. R. Lortz, Y. Wang, A. Demuer, M. Böttger, B. Bergk, G. Zwicknagl, Y. Nakazawa, and J. Wosnitza: "Calorimetric Evidence for a Fulde-Ferrell-Larkin-Ovchinnikov Superconducting State in the Layered Organic Superconductor κ-(BEDT-TTF)2Cu(NCS)2", Phys. Rev. Lett. 99, 187002 (2007)
  26. J. Jedrak, J. Spalek, and G. Zwicknagl: "Partial localization of correlated electrons in orbitally degenerate narrow bands: spin dependent masses, saturated ferromagnetism", phys. stat. sol. (b) 244, 2362 (2007)
  27. D. Zur, D. Menzel, I. Jursic, J. Schoenes, L. Patthey, M. Neef, K. Doll, and G. Zwicknagl: Absence of Kondo resonance in high-resolution photoemission spectra of monocrystalline Fe1−xCoxSi", Phys. Rev. B 75, 165103 (2007)
  28. G. Zwicknagl: "5f electrons in actinides: Dual nature and photoemission spectra", Int. J. Mod. Phys. B 21, 2232 (2007)
  29. G. Zwicknagl and M. Reese: "Dual nature of strongly correlated 5f electrons", J. Magn. Magn. Mat. 310, 201 (2007)
  30. G. Zwicknagl: "Kondo Effect and Antiferromagnetism in CeCu2Ge2: An Electronic Structure Study", J. Low Temp. Phys. 147, 123 (2007)
  31. M. Neef, K. Doll, and G. Zwicknagl: "Structural, electronic and magnetic properties of FeSi: Hybrid functionals and non-local exchange", J. Phys.: Cond. Matter 18, 7437 (2006)
  32. G. Zwicknagl: "Strongly correlated 5f electrons: Spectral functions and meanfield ground states", J. Phys. Soc. Jpn. 75S, 226-231 (2006)
  33. F. Pollmann and G. Zwicknagl: "Spectral functions for strongly correlated 5f-electrons", Phys. Rev. B 73, 035121 (2006)
  34. N. Kozlova, J. Hagel, M. Doerr, J. Wosnitza, D. Eckert, K.-H. Müller, L. Schultz, 
I. Opahle, S. Elgazzar, M. Richter, G. Goll, H. v. Löhneysen, G. Zwicknagl, T. Yoshino, and T. Takabatake: "Magnetic-field-induced band-structure change in CeBiPt", Phys. Rev. Lett. 95, 086403 (2005)
  35. H. Rathgen, M. l. Katsnelson, O. Eriksson, and G. Zwicknagl, Polar magneto-optical Kerr effect for low-symmetric ferromagnets, Phys. Rev. B 72, 014451 (2005)
  36. G. Zwicknagl: "Electron correlations in systems with orbital degeneracies: The dual nature of 5f electrons, heavy fermions and spectral functions in U-compounds", Physica B 359-361, 639 (2005)
  37. H. Nieber, K. Doll, and G. Zwicknagl: "Electronic and magnetic properties of a hexanuclear ferric wheel", Eur. Phys. J. B 44, 209 (2005)
  38. P. Fulde and G. Zwicknagl: "Superconductivity through intraatomic correlations", Journal of Superonductivity 17, 631 (2004)
  39. O. Stockert, E. Faulhaber, G. Zwicknagl, N. Stüßer, H. S. Jeevan, M. Deppe, R. Borth, R. Küchler, M. Loewenhaupt, C. Geibel, and F. Steglich: "Nature of the A Phase in CeCu2Si2", Phys. Rev. Lett. 92, 136401 (2004)
  40. E. Runge, P. Fulde, D. V. Efremov, N. Hasselmann, and G. Zwicknagl: "Approximative treatment of 5f-systems with partial localization due to intra-atomic correlations", Phys. Rev. B 69, 155110 (2004)
  41. D. V. Efremov, N. Hasselmann, E. Runge, P. Fulde, and G. Zwicknagl: "Dual nature of 5f electrons: Effect of intra-atomic correlations on hopping anisotropies", Phys. Rev. B 69, 115114 (2004)
  42. G. Zwicknagl, A. Yaresko, and P. Fulde: "Fermi surface and heavy masses for UPd2Al3", Phys. Rev. B 68, 052508 (2003)
  43. S. Blawid and G. Zwicknagl: "Semiclassical action based on dynamical mean-field theory describing electrons interacting with local lattice fluctuations", Phys. Rev. B 68, 245103 (2003)
  44. G. Zwicknagl and P. Fulde: "The dual nature of 5f electrons and origin of heavy fermions in U compounds", J. Phys.: Cond. Matter 15, S1911 (2003) S1911 (2003)
  45. M. Neef, S. Tornow, V. Zevin, and G. Zwicknagl: "Kondo effect in a metal with correlated conduction electrons", Phys. Rev. B 68, 035114 (2003)
  46. G. Zwicknagl, A. N. Yaresko, and P. Fulde: "Microscopic description of origin of heavy quasiparticles in UPt3 ", Phys. Rev. B 65, 081103(R) (2002)