Spin-glass polyamorphism induced by a magnetic field in LaMnO3 single crystal

被引：5

作者：

Eremenko, V. V. ^{[1
]}

Sirenko, V. A. ^{[1
]}

Baran, A. ^{[2
]}

Cizmar, E. ^{[3
]}

Feher, A. ^{[3
]}

机构：

[1] B Verkin Inst Low Temp Phys & Engn NASU, UA-61103 Kharkov, Ukraine

[2] Tech Univ Kosice, Fac Elect Engn & Informat, Dept Phys, Kosice 04200, Slovakia

[3] Safarik Univ, Fac Sci, Inst Phys, Pk Angelinum 9, Kosice 04154, Slovakia

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2018年 / 30卷 / 20期

关键词：

dynamic susceptibility; polyamorphism; spin glass; field-induced transition; TRANSITION; BEHAVIOR; DYNAMICS; OXYGEN;

D O I：

10.1088/1361-648X/aabc9d

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We present experimental evidence of field-driven transition in spin-glass state, similar to pressure-induced transition between amorphous phases in structural and metallic glasses, attributed to the polyamorphism phenomena. Cusp in temperature dependences of ac magnetic susceptibility of weakly disordered LaMnO3 single crystal is registered below the temperature of magnetic ordering. Frequency dependence of the cusp temperature proves its spin-glass origin. The transition induced by a magnetic field in spin-glass state, is manifested by peculiarity in dependence of cusp temperature on applied magnetic field. Field dependent maximum of heat capacity is observed in the same magnetic field and temperature range.

引用

页数：4

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