Emergent spin-1 trimerized valence bond crystal in the spin-1/2 Heisenberg model on the star lattice
作者： Shi-Ju Ran , Wei Li , Shou-Shu Gong , Andreas Weichselbaum , Jan von Delft
DOI: 10.1103/PHYSREVB.97.075146
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摘要: We explore the frustrated spin-1/2 Heisenberg model on star lattice with antiferromagnetic (AF) couplings inside each triangle and ferromagnetic (FM) intertriangle (J(e) < 0), calculate its magnetic thermodynamic properties. show that FM do not sabotage disordering of ground state due to frustration from AF interactions triangle, but trigger a fully gapped inversion-symmetry-breaking trimerized valence bond crystal (TVBC) emergent spin-1 degrees freedom. discover strengthening J(e), system exhibits universal scaling behavior either or without field h: order parameter, five critical fields separate J(e)-h ground-state phase diagram into six phases, excitation gap obtained by low-temperature specific heat, all depend exponentially J(e). Our work implies VBCs can be stabilized introducing small in geometrically systems.
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J. Richter, A. Honecker, J. Schulenburg, Quantum magnetism in two dimensions: From semi-classical N\'eel order to magnetic disorder arXiv: Strongly Correlated Electrons. ,(2004) , 10.1007/BFB0119592
Dirk Wulferding, Peter Lemmens, Patric Scheib, Jens Röder, Philippe Mendels, Shaoyan Chu, Tianheng Han, Young S. Lee, Interplay of thermal and quantum spin fluctuations in the kagome lattice compound herbertsmithite Physical Review B. ,vol. 82, pp. 144412- ,(2010) , 10.1103/PHYSREVB.82.144412
Samuel Bieri, Laura Messio, Bernard Bernu, Claire Lhuillier, Gapless chiral spin liquid in a kagome Heisenberg model Physical Review B. ,vol. 92, pp. 060407- ,(2015) , 10.1103/PHYSREVB.92.060407
Shou-Shu Gong, D. N. Sheng, Olexei I. Motrunich, Matthew P. A. Fisher, Phase diagram of the spin-12J1-J2Heisenberg model on a honeycomb lattice Physical Review B. ,vol. 88, pp. 165138- ,(2013) , 10.1103/PHYSREVB.88.165138
L. Clark, J. C. Orain, F. Bert, M. A. De Vries, F. H. Aidoudi, R. E. Morris, P. Lightfoot, J. S. Lord, M. T. F. Telling, P. Bonville, J. P. Attfield, P. Mendels, A. Harrison, Gapless Spin Liquid Ground State in the S = 1 / 2 Vanadium Oxyfluoride Kagome Antiferromagnet [ NH 4 ] 2 [ C 7 H 14 N ] [ V 7 O 6 F 18 ] Physical Review Letters. ,vol. 110, pp. 207208- ,(2013) , 10.1103/PHYSREVLETT.110.207208
Thibaut Picot, Didier Poilblanc, Nematic and supernematic phases in kagome quantum antiferromagnets under the influence of a magnetic field Physical Review B. ,vol. 91, pp. 064415- ,(2015) , 10.1103/PHYSREVB.91.064415
Ying Ran, Michael Hermele, Patrick A. Lee, Xiao-Gang Wen, Projected-wave-function study of the spin-1/2 Heisenberg model on the Kagomé lattice. Physical Review Letters. ,vol. 98, pp. 117205- ,(2007) , 10.1103/PHYSREVLETT.98.117205
Kouichi Okunishi, Yasuhiro Hieida, Yasuhiro Akutsu, Middle-field cusp singularities in the magnetization process of one-dimensional quantum antiferromagnets Physical Review B. ,vol. 60, pp. R6953- R6956 ,(1999) , 10.1103/PHYSREVB.60.R6953
Masaki Oshikawa, Masanori Yamanaka, Ian Affleck, Magnetization Plateaus in Spin Chains: “Haldane Gap” for Half-Integer Spins Physical Review Letters. ,vol. 78, pp. 1984- 1987 ,(1997) , 10.1103/PHYSREVLETT.78.1984
B. Bauer, L. Cincio, B.P. Keller, M. Dolfi, G. Vidal, S. Trebst, A.W.W. Ludwig, Chiral spin liquid and emergent anyons in a Kagome lattice Mott insulator Nature Communications. ,vol. 5, pp. 5137- ,(2014) , 10.1038/NCOMMS6137