Controlled creation and annihilation of isolated robust emergent magnetic monopole like charged vertices in square artificial spin ice

Abstract Magnetic analogue of an isolated free electric charge, i.e., a magnet with a single north or south pole, is a long sought-after particle which remains elusive so far. In magnetically frustrated pyrochlore solids, a classical analogue of monopole was observed as a result of excitation of spi...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Neeti Keswani, Ricardo J. C. Lopes, Yoshikata Nakajima, Ranveer Singh, Neha Chauhan, Tapobrata Som, D. Sakthi Kumar, Afranio R. Pereira, Pintu Das
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/747ca22ec28e4473aea49cf64c6a28bd
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:747ca22ec28e4473aea49cf64c6a28bd
record_format	dspace
spelling	oai:doaj.org-article:747ca22ec28e4473aea49cf64c6a28bd2021-12-02T14:33:51ZControlled creation and annihilation of isolated robust emergent magnetic monopole like charged vertices in square artificial spin ice10.1038/s41598-021-92877-72045-2322https://doaj.org/article/747ca22ec28e4473aea49cf64c6a28bd2021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-92877-7https://doaj.org/toc/2045-2322Abstract Magnetic analogue of an isolated free electric charge, i.e., a magnet with a single north or south pole, is a long sought-after particle which remains elusive so far. In magnetically frustrated pyrochlore solids, a classical analogue of monopole was observed as a result of excitation of spin ice vertices. Direct visualization of such excitations were proposed and later confirmed in analogous artificial spin ice (ASI) systems of square as well as Kagome geometries. However, such magnetically charged vertices are randomly created as they are thermally driven and are always associated with corresponding equal and opposite emergent charges, often termed as monopole–antimonopole pairs, connected by observable strings. Here, we demonstrate a controlled stabilisation of a robust isolated emergent monopole-like magnetically charged vertices in individual square ASI systems by application of an external magnetic field. The excitation conserves the magnetic charge without the involvement of a corresponding excitation of opposite charge. Well supported by Monte Carlo simulations our experimental results enable, in absence of a true elemental magnetic monopole, creation of electron vortices and studying electrodynamics in presence of a monopole-like field in a solid state environment.Neeti KeswaniRicardo J. C. LopesYoshikata NakajimaRanveer SinghNeha ChauhanTapobrata SomD. Sakthi KumarAfranio R. PereiraPintu DasNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Neeti Keswani Ricardo J. C. Lopes Yoshikata Nakajima Ranveer Singh Neha Chauhan Tapobrata Som D. Sakthi Kumar Afranio R. Pereira Pintu Das Controlled creation and annihilation of isolated robust emergent magnetic monopole like charged vertices in square artificial spin ice
description	Abstract Magnetic analogue of an isolated free electric charge, i.e., a magnet with a single north or south pole, is a long sought-after particle which remains elusive so far. In magnetically frustrated pyrochlore solids, a classical analogue of monopole was observed as a result of excitation of spin ice vertices. Direct visualization of such excitations were proposed and later confirmed in analogous artificial spin ice (ASI) systems of square as well as Kagome geometries. However, such magnetically charged vertices are randomly created as they are thermally driven and are always associated with corresponding equal and opposite emergent charges, often termed as monopole–antimonopole pairs, connected by observable strings. Here, we demonstrate a controlled stabilisation of a robust isolated emergent monopole-like magnetically charged vertices in individual square ASI systems by application of an external magnetic field. The excitation conserves the magnetic charge without the involvement of a corresponding excitation of opposite charge. Well supported by Monte Carlo simulations our experimental results enable, in absence of a true elemental magnetic monopole, creation of electron vortices and studying electrodynamics in presence of a monopole-like field in a solid state environment.
format	article
author	Neeti Keswani Ricardo J. C. Lopes Yoshikata Nakajima Ranveer Singh Neha Chauhan Tapobrata Som D. Sakthi Kumar Afranio R. Pereira Pintu Das
author_facet	Neeti Keswani Ricardo J. C. Lopes Yoshikata Nakajima Ranveer Singh Neha Chauhan Tapobrata Som D. Sakthi Kumar Afranio R. Pereira Pintu Das
author_sort	Neeti Keswani
title	Controlled creation and annihilation of isolated robust emergent magnetic monopole like charged vertices in square artificial spin ice
title_short	Controlled creation and annihilation of isolated robust emergent magnetic monopole like charged vertices in square artificial spin ice
title_full	Controlled creation and annihilation of isolated robust emergent magnetic monopole like charged vertices in square artificial spin ice
title_fullStr	Controlled creation and annihilation of isolated robust emergent magnetic monopole like charged vertices in square artificial spin ice
title_full_unstemmed	Controlled creation and annihilation of isolated robust emergent magnetic monopole like charged vertices in square artificial spin ice
title_sort	controlled creation and annihilation of isolated robust emergent magnetic monopole like charged vertices in square artificial spin ice
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/747ca22ec28e4473aea49cf64c6a28bd
work_keys_str_mv	AT neetikeswani controlledcreationandannihilationofisolatedrobustemergentmagneticmonopolelikechargedverticesinsquareartificialspinice AT ricardojclopes controlledcreationandannihilationofisolatedrobustemergentmagneticmonopolelikechargedverticesinsquareartificialspinice AT yoshikatanakajima controlledcreationandannihilationofisolatedrobustemergentmagneticmonopolelikechargedverticesinsquareartificialspinice AT ranveersingh controlledcreationandannihilationofisolatedrobustemergentmagneticmonopolelikechargedverticesinsquareartificialspinice AT nehachauhan controlledcreationandannihilationofisolatedrobustemergentmagneticmonopolelikechargedverticesinsquareartificialspinice AT tapobratasom controlledcreationandannihilationofisolatedrobustemergentmagneticmonopolelikechargedverticesinsquareartificialspinice AT dsakthikumar controlledcreationandannihilationofisolatedrobustemergentmagneticmonopolelikechargedverticesinsquareartificialspinice AT afraniorpereira controlledcreationandannihilationofisolatedrobustemergentmagneticmonopolelikechargedverticesinsquareartificialspinice AT pintudas controlledcreationandannihilationofisolatedrobustemergentmagneticmonopolelikechargedverticesinsquareartificialspinice
_version_	1718391136393887744

Controlled creation and annihilation of isolated robust emergent magnetic monopole like charged vertices in square artificial spin ice

Ejemplares similares