Josephson effects in a Bose-Einstein condensate of magnons

Roberto E. Troncoso; Álvaro S. Núñez

doi:10.1016/j.aop.2014.04.017

Josephson effects in a Bose-Einstein condensate of magnons

Roberto E. Troncoso, Álvaro S. Núñez

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

A phenomenological theory is developed, that accounts for the collective dynamics of a Bose-Einstein condensate of magnons. In terms of such description we discuss the nature of spontaneous macroscopic interference between magnon clouds, highlighting the close relation between such effects and the well known Josephson effects. Using those ideas, we present a detailed calculation of the Josephson oscillations between two magnon clouds, spatially separated in a magnonic Josephson junction.

Original language	English
Pages (from-to)	182-194
Number of pages	13
Journal	Annals of Physics
Volume	346
DOIs	https://doi.org/10.1016/j.aop.2014.04.017
State	Published - Jul 2014
Externally published	Yes

Keywords

A. Magnetically ordered materials
D. Spin dynamics
D. Tunneling

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10.1016/j.aop.2014.04.017

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title = "Josephson effects in a Bose-Einstein condensate of magnons",

abstract = "A phenomenological theory is developed, that accounts for the collective dynamics of a Bose-Einstein condensate of magnons. In terms of such description we discuss the nature of spontaneous macroscopic interference between magnon clouds, highlighting the close relation between such effects and the well known Josephson effects. Using those ideas, we present a detailed calculation of the Josephson oscillations between two magnon clouds, spatially separated in a magnonic Josephson junction.",

keywords = "A. Magnetically ordered materials, D. Spin dynamics, D. Tunneling",

author = "Troncoso, {Roberto E.} and N{\'u}{\~n}ez, {{\'A}lvaro S.}",

note = "Funding Information: ASN would like to thank Professor R.A. Duine for helpful comments. This work was partially funded by Proyecto Fondecyt grant numbers 11070008 and 1110271 , Proyecto Basal FB0807-CEDENNA , N{\'u}cleo Cient{\'i}fico Milenio P06022-F and Proyecto Anillo de Ciencia y Tecnolog{\'i}a , ACT 1117 .",

year = "2014",

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doi = "10.1016/j.aop.2014.04.017",

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journal = "Annals of Physics",

issn = "0003-4916",

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TY - JOUR

T1 - Josephson effects in a Bose-Einstein condensate of magnons

AU - Troncoso, Roberto E.

AU - Núñez, Álvaro S.

N1 - Funding Information: ASN would like to thank Professor R.A. Duine for helpful comments. This work was partially funded by Proyecto Fondecyt grant numbers 11070008 and 1110271 , Proyecto Basal FB0807-CEDENNA , Núcleo Científico Milenio P06022-F and Proyecto Anillo de Ciencia y Tecnología , ACT 1117 .

PY - 2014/7

Y1 - 2014/7

N2 - A phenomenological theory is developed, that accounts for the collective dynamics of a Bose-Einstein condensate of magnons. In terms of such description we discuss the nature of spontaneous macroscopic interference between magnon clouds, highlighting the close relation between such effects and the well known Josephson effects. Using those ideas, we present a detailed calculation of the Josephson oscillations between two magnon clouds, spatially separated in a magnonic Josephson junction.

AB - A phenomenological theory is developed, that accounts for the collective dynamics of a Bose-Einstein condensate of magnons. In terms of such description we discuss the nature of spontaneous macroscopic interference between magnon clouds, highlighting the close relation between such effects and the well known Josephson effects. Using those ideas, we present a detailed calculation of the Josephson oscillations between two magnon clouds, spatially separated in a magnonic Josephson junction.

KW - A. Magnetically ordered materials

KW - D. Spin dynamics

KW - D. Tunneling

UR - http://www.scopus.com/inward/record.url?scp=84900448165&partnerID=8YFLogxK

U2 - 10.1016/j.aop.2014.04.017

DO - 10.1016/j.aop.2014.04.017

M3 - Article

AN - SCOPUS:84900448165

SN - 0003-4916

VL - 346

SP - 182

EP - 194

JO - Annals of Physics

JF - Annals of Physics

ER -

Josephson effects in a Bose-Einstein condensate of magnons

Abstract

Keywords

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