Publications/ Invited talks
2011
NMR studies of pseudogap and electronic inhomogeneity in Bi2Sr2CaCu2O8+δ
J. Crocker, A. P. Dioguardi, N. apRoberts-Warren, A. C. Shockley, H.-J. Grafe, Z. Xu, J. Wen, G. Gu, and N. J. Curro
Phys. Rev. B 84, 224502 (2011).
As vacancies, local moments, and Pauli limiting in LaFeAs1−yO0.9F0.1 superconductors
Vadim Grinenko, Konstantin Kikoin, Stefan-Ludwig Drechsler, Günter Fuchs, Konstantin Nenkov, Sabine Wurmehl, Franziska Hammerath, Guillaume Lang, Hans-Joachim Grafe, Bernhard Holzapfel, Jeroen van den Brink, Bernd Büchner, and Ludwig Schultz
Phys. Rev. B. 84, 134516 (2011).
Pseudogap-like phase in Ca(Fe1-xCox)2As2 revealed by 75AS NQR
S. -H. Baek, H. -J. Grafe, L. Harnagea, S. Singh, S. Wurmehl, and B. Büchner
Phys. Rev. B. 84, 094510 (2011).
Spin Gap in the Zigzag Spin-1/2 Chain Cuprate Sr0.9Ca0.1CuO2
F. Hammerath, S. Nishimoto, H. -J. Grafe, A. U. B. Wolter, V. Kataev, P. Ribeiro, C. Hess, S. -L. Drechsler and B. Büchner
Phys. Rev. Lett. 107, 017203 (2011).
2010
Single Crystal Growth and Characterization of Superconducting LiFeAs
I. Morozov, A. Boltalin, O. Volkova, A. Vasiliev, O. Kataeva, U. Stockert, M. Abdel-Hafiez, D. Bombor,
A. Bachmann, L. Harnagea, M. Fuchs, H.-J. Grafe, G. Behr, R. Klingeler, S. Borisenko, C. Hess, S. Wurmehl, and B. Büchner
Crystal Growth & Design 10, 4428, (2010).
Evidence for Pauli-limiting behaviour at high fields and enhanced upper critical fields near T_c in several disordered FeAs based superconductors
G. Fuchs, S.-L. Drechsler, N. Kozlova, M. Bartkowiak, G. Behr, K. Nenkov, H.-H. Klauss, J. Freudenberger, M. Knupfer, F. Hammerath, G. Lang, H.-J. Grafe, B. Buechner,
L. Schultz
Physica C 470 (2010) Nr. Supplement 1, S. S288-S290.
Charge order and low frequency spin dynamics in lanthanum cuprates revealed by nuclear magnetic resonance
H.-J. Grafe, N.J. Curro, B.L. Young, A. Vyalikh, J. Vavilova, G.D. Gu, M. Huecker, B. Buechner
The European Physical Journal Special Topics 188 (2010) Nr. 1, S. 89-101.
Probing of the charge distribution in iron pnictides
G. Lang, H.-J. Grafe, F. Hammerath, K. Manthey, , D. Paar, G. Behr, J. Werner, J. Hamann-Borrero, B. Buechner
Physica C 470 (2010), S. S454-S455 URL.
NMR study of the electronic properties of superconducting LaO0.9F0.1FeAs
D. Paar, H.-J. Grafe, G. Lang, F. Hammerath, K. Manthey, G. Behr, J. Werner, B. Buechner
Physica C 470 (2010), S. S468-S469.
Unusual disorder effects in superconducting LaFeAs1−δO0.9F0.1 as revealed by 75As NMR spectroscopy
F. Hammerath, S.-L. Drechsler, H.-J. Grafe, G. Lang, G. Fuchs, G. Behr, I. Eremin, M. M. Korshunov, and B. Büchner
Phys. Rev. B. 81, 140504 (2010).
Nanoscale Electronic Order in Iron Pnictides
G. Lang, H.-J. Grafe, D. Paar, F. Hammerath, K. Manthey, G. Behr, J. Werner, and B. Büchner
Phys. Rev. Lett. 104, 097001 (2010).
Local antiferromagnetic correlations in the iron pnictide superconductors LaFeAsO1−xFx and Ca(Fe1−xCox)2As2 as seen via normal-state susceptibility
R. Klingerer, N. Leps, I. Hellmann, A. Popa, U. Stockert, C. Hess, V. Kataev, H.-J. Grafe, F. Hammerath, G. Lang, S. Wurmehl, G. Behr, L. Harnagea, S. Singh, and B. Büchner
Phys. Rev. B. 81, 024506 (2010).
2009
Electronic properties of LaO1-xFxFeAs in the normal state probed by NMR/NQR
H.-J. Grafe, G. Lang, F. Hammerath, D. Paar, K. Manthey, K. Koch, H. Rosner, N. J. Curro, G. Behr, J. Werner, N. Leps, R. Klingeler, H.-H. Klauss, F. J. Litterst and B. Büchner
New J. Phys. 11, 035002 (2009).
2008
75As NMR Studies of Superconducting LaFeAs00.9F0.1
H.-J. Grafe, D. Paar, G. Lang, N. J. Curro, G. Behr, J. Werner, J. Hamann-Borrero, C. Hess, N. Leps, R. Klingeler, and B. Büchner
Phys. Rev. Lett. 101, 047003 (2008).
A carbon-wrapped nanoscaled thermometer for temperature control in biological environments
A. Vyalikh, A. Wolter, S. Hampel, D. Haase, M. Ritschel, A. Leonhardt, H.-J. Grafe, A. Taylor, K. Kraemer, B. Buechner, R. Klingerer
Nanomedicine 3 (2008) Nr. 3, S.321-327
Contrasting spin dynamics in Zn- and Ni-doped NdBa2Cu3O6+y single crystals from Cu nuclear quadrupole resonance: Evidence for correlations between antiferromagnetism and pseudogap effects
H.-J. Grafe, F. Hammerath, A. Vyalikh, G. Urbanik, V. Kataev, Th. Wolf, G.Khaliullin, and B. Büchner
Phys. Rev. B. 77, 014522 (2008).
2007
Cu nuclear quadrupole resonance study of NdBa2(Cu,Zn,Ni)3O7-δ
Hans-Joachim Grafe, Franziska Hammerath, Thomas Wolf, Bernd Büchner
Physica C 460-462 (2007) 896-897.
A nanoscaled contactless thermometer for biological system
A. Vyalikh1, R. Klingerer1, S. Hampel1, D. Haase1, M. Ritschel1, A. Leonhardt1, E. Borowiak-Palen2, M. Rümmeli1,2, A. Bachmatiuk2, R. J. Kalenczuk2, H.-J. Grafe1, and B. Büchner1
phys. stat. sol. (b) 244, No. 11, 4092-4096 (2007)/ DOI 10.1002/pssb.200776184
2006
Nuclear-Magnetic-Resonance Evidence for Charge Inhomogeneity in Stripe Ordered
La1.8-xEu0.2SrxCuO4
H.-J. Grafe, N.J. Curro, M. Hücker, and B. Büchner
Phys. Rev. Lett. 96, 017002, (2006).
Magnetic properties of vanadium-oxide nanotubes probed by static magnetization and 51V NMR.
E. Vavilova, I. Hellmann, V. Kataev, C. Täschner, B. Büchner, and R. Klingeler.
Phys. Rev. B. 73, 144417 (2006).
2005
NMR In Pulsed High Magnetic Fields at 1.3 GHz
J. Haase, M. Kozlov, K.-H. Müller, H. Siegel, B. Büchner, H. Eschrig, A. G. Webb,
Journal of Magnetism and Magnetic Materials, 290-291, page 438-44, (2005).
2 GHz 1H NMR in pulsed magnets
J. Haase, M. B. Kozlov, A. G. Webb, B. Büchner, H. Eschrig, K.-H. Müller, H. Siegel,
Solid State Nuclear Magnetic Resonance, 27, page 206-208, ( 2005).
56 T 1H NMR at 2.4 GHz in a pulsed high-field magnet
Mikhail B. Kozlov, Jürgen Haase, Christoph Baumann and Andrew G. Webb,
Solid State Nuclear Magnetic Resonance, Volume 28, page 64-67, (2005) .
2004
The interplay of Charge order and magnetism in Sr14Cu24O41 and Sr13La1Cu24O41
A. Bosse, D. Mienert, H.-J. Grafe, U. Janke, F.J. Litterst, U. Ammerahl, B. Büchner, and H.-H. Klauss
Journal of Magnetism and Magnetic Materials, 272-276, page 918, (2004).
Invited talks
2011
H.-J. Grafe
Nuclear magnetic resonance study of pure and Ni/Co doped LiFeAs,
477. WE-Heraeus-Seminar "Unconventional Superconductivity", Bad Honnef, 11.-13.4.11 (2011).
2010
H.-J. Grafe, G. Lang, F. Hammerath, K. Manthey, M. Fuchs, D. Paar, B. Buechner
NMR studies of the new iron pnictide superconductors,
CIMTEC 2010, 5th Forum on New Materials, Montecatini Terme/ Italien, 13.-18.6.10 (2010).
H.-J. Grafe, G. Lang, F. Hammerath, S.-H. Beak, B. Buechner
NMR studies of the new iron pnictide superconductors,
Recent Advances in Broad-band Solid-state NMR of Correlated Electronic Systems, Trogir/ Kroatien, 5.-10.9.10 (2010).
2009
H.-J. Grafe, G. Lang, F. Hammerath, K. Manthey, D. Paar, B. Buechner
NMR studies of superconducting LaO1-xFxFeAs,
Kick-off meeting of the SOLeNeMaR EU project of the Department of Physics, University of Zagreb/ Croatia, 19.-20.3.09 (2009).
2008
H.-J. Grafe, F. Hammerath, D. Paar, G. Urbanik, V. Kataev, T. Wolf, G. Khaliullin, B. Buechner
Nuclear magnetic resonance evidence for correlations between antiferromagnetism and pseudogap effects in Zn- and Ni-doped (Eu,Nd)Ba2Cu3O6+y single crystals,
International Conference Stripes'08, Erice, Sizilien/ Italy, 26.7.-1.8.08 (2008).
G. Lang, H.-J. Grafe, D. Paar, A. Wolter, F. Hammerath, K. Manthey, N. Curro, R. Klingeler, N. Leps, C. Hess, A. Kondrat, J.E., Behr, G. Hamann Borrero, J. Werner, A. Koehler, B. Buechner
Electronic properties of iron pnictides as seen by NMR,
International Conference on FeAs High Tc Superconducting Multilayers and Related Phenomena, Rom/ Italien, 9.-13.12.08 (2008).
2004
H.-J. Grafe
Local fluctuating charge order in the stripe ground state of La(1,8-x)Eu0,2SrxCuO4,
NMR-Seminar der NMR-Arbeitsgruppen im Raum Dresden, Leibniz-Institut fuer Polymerforschung Dresden, 29.1.04 (2004).