Publications
%FBeleg93
J. Schulenburg, Forschungsbeleg, Okt1993 LANG=de
"Berechnungen des Grundzustandes eines wechselwirkenden
Fermionensystems"
Download: fbeleg93.pdf 291kB
Keywords: Hubbardmodell, Heisenbergmodell, Eigenzustaende, N=2..4,8,16
%Dipl94
J. Schulenburg, Diplomarbeit, Aug1994 LANG=de
"Ferromagnetismus in isolierenden Übergangsmetallverbindungen"
Download: dipl94.pdf 553kB
Keywords: Hubbardmodell, Ferromagnetismus, Exakte Diagonalisierung,
Stoerungstheorie, Austauschwechselwirkung
%01
S. Feldkemper, W. Weber, J. Schulenburg and J. Richter
Ferromagnetic coupling in nonmetallic Cu$^{2+}$ compounds
Phys.Rev.B {\bf 52}, 313 (1995)
%02
J. Richter, C. Gros, S. Kr\"uger, W. Wenzel and J. Schulenburg
Phase transitions in two-layer spin 1/2 antiferromagnets with
competing intra-layer and inter-layer couplings
J.Magn.Magn.Mat. {\bf 156}, 433-434 (1996)
% Journal of Magnetism and Magnetic Materials
%03
R. Hayn, A.F. Barabanov, J. Schulenburg and J. Richter
The one-hole motion in the 2D frustrated t-J model
Phys. Rev. B, {\bf 53}, 11714 (1996)
%04
R. Hayn, A.F. Barabanov, J. Schulenburg
Non-rigid hole band in the extended t-J model
Zeitschrift f\"ur Physik B {\bf 102}, 359-366 (1997)
%05
J. Schulenburg, J. Richter
Ferromagnetic groundstate of a two band Hubbard model
with one electron per site
Acta Physica Polonica A {\bf 91}, 367-370 (1997),
Proceedings of the Conference Physics of Magnetism 96 % PM96
%06
J. Schulenburg, J. Richter
Numerical study of the Goodenough-Kanamori-Anderson mechanism in a
two-band Hubbard model
Physica B (230-232) 1044-1046 (1997) % SCES 96
%07
J. Richter, N.B.Ivanov, J.Schulenburg
The antiferromagnetic spin-1/2 chain with competing dimers and
plaquettes: numerical versus exact results
Journal of Physics: Condensed Matter {\bf 10}, 3635-3649 (1998)
%08
H.Rosner, R.Hayn, J.Schulenburg
Tight-binding parameters and exchange integrals of Ba2Cu3O4Cl2
Physical Review B {\bf 57}, 13660-13666 (1998)
% cond-mat/9705153
%09
J.Richter, A.Voigt, J.Schulenburg, N.B.Ivanov and R.Hayn
Magnetic model for Ba2Cu3O4Cl2
% cond-mat/9711243
JMMM 177-181 (1998) p.737-738 % ICM Aug97 Australien
%10
D.D.Betts, J.Schulenburg, G.E.Stewart, J.Richter, J.S.Flynn
Finite bcc lattices and their use in exact diagonalization of the
S=1/2 Heisenberg antiferromagnet to estimate its T=0 properties
on the infinite lattice,
J. Phys. A: Math. Gen. {\bf 31} (1998) 7685-7698
% cond-mat/9809405
%11
J.Schulenburg, J.Richter, D.D.Betts
Heisenberg antiferromagnet on a 1/7-depleted triangular lattice
Acta physica polonica A {\bf 97} No.5, 971-974 (2000)
Proceedings of the European Conference "Physics of Magnetism '99",
Poznan 1999
%12
S.E.Kr\"uger, J.Richter, J.Schulenburg
Quantum phase transitions of a square-lattice Heisenberg antiferromagnet
with two kinds of nearest-neighbor bonds: A high-order coupled-cluster
treatment
Phys.Rev.B {\bf 61} 14607-14615 (2000) % cond-mat/0003126
%13
J.Schulenburg, J.S.Flynn, D.D.Betts, J.Richter
Exact diagonalization of the S = 1/2 XY ferromagnet on
finite bcc lattices to estimate T = 0
properties on the infinite lattice
Eur.Phys.J.B. {\bf 21}, 191 (2001) % cond-mat/0105291
%14
P.Tomczak, J.Schulenburg, J.Richter, A.R.Ferchmin
The ground state of the spin-1/2 Heisenberg antiferromagnet on
an Archimedian 4-6-12 lattice
J.Phys.: Condens. Matter 13 (2001) 3851-3857 % cond-mat/0104137
%15
J. Schnack, H.J. Schmidt, J. Richter and J. Schulenburg
"Independent magnon states on magnetic polytopes",
Eur. Phys. J. B 24, 475 (2001) % cond-mat/0108432
%16
J. Schulenburg, J. Richter,
Infinite series of magnetization plateaus in the
frustrated dimer-plaquette chain
Phys. Rev. B 65, 054420 (2002) % cond-mat/0107137
%17
Schulenburg,J. / Honecker,A. / Schnack,J. / Richter,J./ Schmidt,H.-J.
Macroscopic magnetization jumps due to independent
magnons in frustrated quantum spin lattices
Phys. Rev. Lett. 88, 167207 (2002) % cond-mat/0108498
%18
Schmalfuss,D. / Tomczak,P. / Schulenburg,J. / Richter,J.
The spin-1/2 Heisenberg antiferromagnet
on a 1/7-depleted triangular lattice: Ground-state properties
Phys. Rev. B 65, 224405 (2002) % cond-mat/0201584
%19
R. Schmidt, J. Schulenburg, J. Richter, D.D. Betts
Spin-1/2 J1-J2 model on the body-centered cubic lattice
Phys. Rev. B 66, 224406 (2002) % cond-mat/0203085
%20
J. Schulenburg, J. Richter
Sequence of first-order quantum phase transitions in
a frustrated spin half dimer-plaquette chain
Phys. Rev. B 66, 134419 (2002) % cond-mat/0206538
%Diss
Dissertation, Jörg Schulenburg, Jan. 2003, LANG=de
"Einfluß der Gitterstruktur auf den Grundzustand
von s=1/2-Quantenspinsystemen"
Keywords: Heisenbergmodell, Archimedische Gitter (archimedian tilings)
Dissertation ca. 2MB, Download: SHIFT-Taste + Mausklick
ps-version ca. 1MB, Mozilla-Download: SHIFT-Taste + Mausklick
Errata:
Page 92: Tiling 4, N=36, cD=0.008628 instead of -0.037491 (April 2003)
Page 58: Abbildung 4.2, Tiling 6, Frustration = -0.6 (wrong: -0.8, Mai 2018)
Page 137: Abbildung 4.59 Tiling 6 wie Abb. 4.2
also: Lect. Notes Phys 645, 85-153 (2004) Fig. 2.2 and Fig. 2.22
%21
J. Schulenburg, J. Richter
Macroscopic Magnetization Jumps in Strongly Frustrated Quantum Spin Lattices
Springer Proceedings in Physics 90, p. 29 (2003)
% D.P. Landau e.a., Computer Simulation Studies in Condensed Matter Physics XV
%22
D. Schmalfuss, R. Herms, J. Richter and J. Schulenburg,
Ground-state phases in a system of two competing
square-lattice Heisenberg antiferromagnets
J. Phys.: Condens. Matter 15 No 17 (7 May 2003) 2667-2679 % cond-mat/0301095
%23
A. Honecker, J. Schulenburg, J. Richter
Magnetization plateaus in frustrated antiferromagnetic quantum spin models
J. Phys.: Condens. Matter 16 No 11 (24 March 2004) S749-S758
% cond-mat/0309425, http://stacks.iop.org/0953-8984/16/S749
%24
J. Richter, J. Schulenburg, A. Honecker, J. Schnack, H.-J. Schmidt
Exact eigenstates and macroscopic magnetization jumps
in strongly frustrated spin lattices
J. Phys.: Condens. Matter 16 (24 March 2004) S779-S784 % cond-mat/0309455
% http://www.iop.org/EJ/abstract/0953-8984/16/11/029/
%25
Johannes Richter, Oleg Derzhko, J/"org Schulenburg
Magnetic-field induced spin-Peierls instability in strongly frustrated
quantum spin lattices
% cond-mat/0312216
Phys. Rev. Lett. 93, 107206 (2004)
%26
J. Richter, J.Schulenburg, A. Honecker, D. Schmalfuss
Absence of magnetic order for the spin-half Heisenberg antiferromagnet on
the star lattice
Phys.Rev.B 70, 174454 (2004)
%27
D.C. Cabra, M.D. Grynberg, P.C.W. Holdsworth, A. Honecker, P. Pujol,
J. Richter, D. Schmalfuss, J. Schulenburg
Quantum kagome antiferromagnet in a magnetic field: Low-lying
non-magnetic excitations versus valence-bond crystal order
% cond-mat/0404279
Phys. Rev. B 71, 144420 (2005)
%28
J. Schulenburg: GOCR - OCR fuer Linux,
Linux+ 5/2005 p34-36,
Software-Wydawnictwo Publishing House, www.lpmagazine.org
%29
D.J.J. Farnell, J. Schulenburg, J. Richter, K.A. Gernoth
High-order coupled cluster calculations via parallel processing:
An illustration for CaV4O9
Phys. Rev. B 72, 172408 (2005) % cond-mat/0511544
%30
Dirk Schmalfuss, R. Darradi, J. Richter, J. Schulenburg, D. Ihle
Quantum $J sub 1$-$J sub 2$ antiferromagnet on a stacked square
lattice: Influence of the interlayer coupling on the ground-state
magnetic ordering
Phys. Rev. Lett. 97, 157201 (2006)
%31
J. Schnack, H.-J. Schmidt, A. Honecker, J. Schulenburg and J. Richter
Exact eigenstates of highly frustrated spin lattices probed in high fields
J. Phys.: Conf. Ser. 51 43-46 (2006)
%32
F.Ouchni, J.Schnack, J.Schulenburg
Exact diagonalization of a one-dimensional Hubbard model at density rho=0.4:
Effects of Coulomb repulsions and distant transfer
Phys. Rev. B 76, 195106 (2007)
%33
R. Zinke, J. Schulenburg, J. Richter
Ground-state long-range order in quasi-one-dimensional
Heisenberg quantum antiferromagnets: high-order coupled-cluster calculations
Eur. Phys. J. B 61, 147-152 (2008) (see www.epj.org)
%34
R. F. Bishop, P. H. Y. Li, R. Darradi, J. Schulenburg, and J. Richter
Effect of anisotropy on the ground-state magnetic ordering of the spin-half
quantum J[sub 1][sup XXZ]--J[sub 2][sup XXZ] model on the square lattice
Physical Review B (Vol.78, No.5)
% URL: http://link.aps.org/abstract/PRB/v78/e054412
% DOI: 10.1103/PhysRevB.78.054412
%35
R. Darradi, O. Derzhko, R. Zinke, J. Schulenburg,
S.E. Kr\"{u}ger, J. Richter
Ground state phases of the spin-$\frac{1}{2}$ $J_1$--$J_2$
Heisenberg antiferromagnet on the square lattice: A high-order
coupled cluster treatment
Phys. Rev. B 78, 214415 (2008)
% URL: http://link.aps.org/abstract/PRB/v78/e214415
% URL: http://link.aps.org/doi/10.1103/PhysRevB.78.214415
% DOI: 10.1103/PhysRevB.78.214415
%36
D. J. J. Farnell, R. Zinke, J. Richter, J. Schulenburg,
High-Order Coupled Cluster Method Study of Frustrated and
Unfrustrated Quantum Magnets in External Magnetic Fields
J. Phys.: Condens. Matter 21 (2009) 406002.
% URL: http://stacks.iop.org/0953-8984/21/406002
% URL: http://arxiv.org/abs/0908.2881
%37
J. Richter, J. Schulenburg, P. Tomczak, D. Schmalfuss
The Heisenberg antiferromagnet on the square-kagome lattice
Cond. Matter Phys. {\bf 12}, 507 (2009)
% (special issue on spin systems).
%38
J.Richter, J. Schulenburg,
The spin-1/2 J1-J2 Heisenberg antiferromagnet on the square lattice:
Exact diagonalization for N=40 spins
Eur. Phys. J. B 73, 117-124 (2010)
% DOI: 10.1140/epjb/e2009-00400-4
%39
O. Goetze, S. E. Krueger, F. Fleck, J. Schulenburg, and J. Richter,
"Ground-state phase diagram of the spin-$\frac{1}{2}$ square-lattice
$J_{1}$-$J_{2}$ model with plaquette structure"
Phys. Rev. B 85, 224424 (2012) [9 pages]
% URL: http://prb.aps.org/abstract/PRB/v85/i22/e224424 [1.2MB]
% DOI: 10.1103/PhysRevB.85.224424
% http://arxiv.org/abs/1205.0681 [427kB]
...
T. Krokhmalskii, V. Baliha, O. Derzhko, J. Schulenburg, and J. Richter:
Frustrated honeycomb-lattice bilayer quantum antiferromagnet
in a magnetic field
% arXiv:1706.07909
%doi = "https://doi.org/10.1016/j.physb.2017.09.064",
%url = "http://www.sciencedirect.com/science/article/pii/S0921452617306464",
% SCES 2017
T. Krokhmalski, V. Baliha, O. Derzhko, J. Schulenburg, and J. Richter:
Frustrated honeycomb-lattice bilayer quantum antiferromagnet in a
magnetic field: Unconventional phase transitions in a two-dimensional
isotropic Heisenberg model
Phys. Rev. B {\bf 95}, 094419 (2017)
R. F. Bishop, P. H.Y. Li, R. Zinke, R. Darradi, J. Richter,
D. J.J. Farnell, and J. Schulenburg:
The Spin-Half {\it XXZ} Antiferromagnet on the Square Lattice
Revisited: A High-Order Coupled Cluster Treatment
J. Magn. Magn. Mat. {\bf 428}, 178 (2017)
%arXiv:1608.06157
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