Quantum criticality and spin liquid phase in the Shastry-Sutherland model
Quantum criticality and spin liquid phase in the Shastry-Sutherland model
复制标题
Shastry-Sutherland 模型中的量子临界性和自旋液相
DOI:
10.1103/physrevb.105.l060409
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发表时间:
2021-04
影响因子:
3.7
通讯作者:
Wang Ling
中科院分区:
文献类型:
--
作者:
Yang Jianwei;S;vik Anders W.;Wang Ling
Using the density-matrix renormalization group method for the ground state and excitations of the Shastry- Sutherland spin model, we demonstrate the existence of a narrow quantum spin liquid phase between the previously known plaquette-singlet and antiferromagnetic states. Our conclusions are based on finite-size scaling of excited level crossings and order parameters. Together with previous results on candidate models for deconfined quantum criticality and spin liquid phases, our results point to a unified quantum phase diagram where the deconfined quantum-critical point separates a line of first-order transitions and a gapless spin liquid phase. The frustrated Shastry-Sutherland model is close to the critical point but slightly inside the spin liquid phase, while previously studied unfrustrated models cross the first-order line. We also argue that recent heat capacity measurements in SrCu2(BO3)2 show evidence of the proposed spin liquid at pressures between 2.6 and 3 GPa.
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影响因子:
1.7
作者:
T. Waki;K. Arai;M. Takigawa;Y. Saiga;Y. Uwatoko;H. Kageyama;Y. Ueda
通讯作者:
T. Waki;K. Arai;M. Takigawa;Y. Saiga;Y. Uwatoko;H. Kageyama;Y. Ueda
影响因子:
2.2
作者:
Schwameder, Hermann;Lindenhofer, Elke;Muller, Erich
通讯作者:
Muller, Erich
影响因子:
3.7
作者:
David C. Ronquillo;M. R. Peterson
通讯作者:
David C. Ronquillo;M. R. Peterson
DOI:
10.1103/physrevb.102.201116
发表时间:
2019-12
期刊:
arXiv: Strongly Correlated Electrons
影响因子:
--
作者:
A. Nahum
通讯作者:
A. Nahum
影响因子:
3.5
作者:
A. Sandvik;B. Zhao 赵
通讯作者:
A. Sandvik;B. Zhao 赵