Dynamic phase diagram of dc-pumped magnon condensates

被引：48

作者：

Bender, Scott A. ^{[1
]}

Duine, Rembert A. ^{[2
,3
]}

Brataas, Arne ^{[4
]}

Tserkovnyak, Yaroslav ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

[2] Univ Utrecht, Inst Theoret Phys, NL-3584 CE Utrecht, Netherlands

[3] Univ Utrecht, Ctr Extreme Matter & Emergent Phenomena, NL-3584 CE Utrecht, Netherlands

[4] Norwegian Univ Sci & Technol, Dept Phys, NO-7491 Trondheim, Norway

来源：

PHYSICAL REVIEW B | 2014年 / 90卷 / 09期

基金：

美国国家科学基金会;

关键词：

SPIN; MAGNETIZATION; DRIVEN;

D O I：

10.1103/PhysRevB.90.094409

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study the effects of nonlinear dynamics and damping by phonons on a system of interacting electronically pumped magnons in a ferromagnet. The nonlinear effects are crucial for constructing the dynamic phase diagram, which describes how "swasing" and Bose-Einstein condensation emerge out of the quasiequilibrated thermal cloud of magnons. We analyze the system in the presence of magnon damping and interactions, demonstrating the continuous onset of stable condensates as well as hysteretic transitions.

引用

页数：8

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