Magnetic and lattice excitations in the quasi-2D quantum spin compound (CuCl)LaNb2O7

被引：1
|
作者：
Gnezdilov, Vladimir [1 ,2 ]
Lemmens, Peter [1 ,3 ]
Wulferding, Dirk [4 ]
Kitada, Atsushi [5 ]
Kageyama, Hiroshi [6 ]
机构：
[1] TU Braunschweig, Inst Condensed Matter Phys, D-38106 Braunschweig, Germany
[2] Natl Acad Sci Ukraine Kharkiv, B Verkin Inst Low Temp Phys & Engn, UA-61103 Kharkiv, Ukraine
[3] Lab Emerging Nanometrol LENA, D-38106 Braunschweig, Germany
[4] Seoul Nat Univ, Inst Basic Sci, Dept Phys & Astron, CCES, Seoul 08826, South Korea
[5] Kyoto Univ, Grad Sch Engn, Dept Mat Engn, Kyoto 6158510, Japan
[6] Kyoto Univ, Grad Sch Engn, Dept Energy & Hydrocarbon Chem, Kyoto 6158510, Japan
来源：
LOW TEMPERATURE PHYSICS | 2021年 / 47卷 / 11期
关键词：
quantum spin system; Raman scattering; magnetic and lattice excitations; FRUSTRATED SQUARE-LATTICE; LIGHT-SCATTERING; RAMAN-SCATTERING; GROUND-STATE; BOUND-STATES; PEROVSKITE; SPECTRUM; LADDER; CL;
D O I：
10.1063/10.0006564
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Raman scattering phonon data of the quasi-two-dimensional quantum spin system (CuCl)LaNb2O7 are used to derive an effective structural model that may serve as a basis for its unconventional magnetic properties. Furthermore, a rich spectrum of magnetic excitations is observed, including quasielastic energy density fluctuations and finite energy bound states. These modes are the key to understand (CuCl)LaNb2O7 as a system with strong interactions between well-localized triplet excitations based on a pronounced competition of magnetic exchange.
引用
收藏
页码：928 / 936
页数：9
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