Temperature dependence of the pressure induced monoclinic distortion in the spin S=1/2 Shastry-Sutherland compound SrCu2(BO3)2

被引：13

作者：

Zayed, M. E. ^{[1
,2
,3
]}

Rueegg, Ch. ^{[3
,4
,5
,6
]}

Pomjakushina, E. ^{[7
]}

Stingaciu, M. ^{[7
,8
]}

Conder, K. ^{[7
]}

Hanfland, M. ^{[9
]}

Merlini, M. ^{[9
]}

Ronnow, H. M. ^{[2
]}

机构：

[1] Qatar Univ, Coll Arts & Sci, Dept Math Stat & Phys, POB 2713, Doha, Qatar

[2] Ecole Polytech Fed Lausanne, Lab Quantum Magnetism, CH-1015 Lausanne, Switzerland

[3] Paul Scherrer Inst, Neutron Scattering Lab, CH-5232 Villigen, Switzerland

[4] UCL, London Ctr Nanotechnol, London WC1E 6BT, England

[5] UCL, Dept Phys & Astron, London WC1E 6BT, England

[6] Univ Geneva, Dept Condensed Matter Phys, CH-1211 Geneva, Switzerland

[7] Paul Scherrer Inst, Lab Dev & Methods, CH-5232 Villigen, Switzerland

[8] Stockholm Univ, Dept Mat & Environm Chem, S-10691 Stockholm, Sweden

[9] ESRF, F-38043 Grenoble, France

来源：

SOLID STATE COMMUNICATIONS | 2014年 / 186卷

基金：

瑞士国家科学基金会;

关键词：

Shastry-Sutherland; Phase transition; Magnetic ordering; High pressure; QUANTUM PHASE-TRANSITIONS; SYSTEM SRCU2(BO3)(2); MAGNETIZATION PLATEAUS; GROUND-STATE; GAUGE;

D O I：

10.1016/j.ssc.2014.01.008

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We investigate the monoclinic distortion that occurs at 4.7 GPa at room temperature in the frustrated Shastry-Sutherland model quantum magnet SrCu2(BO3)(2) as a function of pressure and temperature by means of powder and single crystal angle dispersive synchrotron X-ray diffraction. Our results indicate that the onset of the structural distortion varies in a narrow pressure range between 4.0 and 5.0 GPa. This result will be useful in order to distinguish between magnetic transitions related to structural changes and potential intrinsic quantum phase transitions that various reports have suggested to take place in SrCu2(BO3)(2) at high pressure and low temperature. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：13 / 17

页数：5

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