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

页码：928 / 936

页数：9

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