Local moment formation and magnetic coupling of Mn dopants in Bi2Se3: A low-temperature ferromagnetic resonance study

D. Savchenko; R. Tarasenko; M. Vališka; J. Kopeček; Ladislav Fekete; K. Carva; Vaclav Holy; Gunther Springholz; V. Sechovský; J. Honolka

doi:10.1016/j.physb.2017.10.016

Local moment formation and magnetic coupling of Mn dopants in Bi2Se3: A low-temperature ferromagnetic resonance study

D. Savchenko
, R. Tarasenko
, M. Vališka
, J. Kopeček
, Ladislav Fekete
, K. Carva
, Vaclav Holy
, Gunther Springholz
, V. Sechovský
, J. Honolka

Abteilung für Halbleiterphysik

Publikation: Beitrag in Fachzeitschrift › Artikel › Begutachtung

Abstract

We compare the magnetic and electronic configuration of single Mn atoms in molecular beam epitaxy (MBE) grown Bi2Se3 thin films, focusing on electron paramagnetic (ferromagnetic) resonance (EPR and FMR, respectively) and superconducting quantum interference device (SQUID) techniques. X-ray diffraction (XRD) and electron backscatter diffraction (EBSD) reveal the expected increase of disorder with increasing concentration of magnetic guest atoms, however, Kikuchi patterns show that disorder consists majorly of μm-scale 60° twin domains in the hexagonal Bi2Se3 structure, which are promoted by the presence of single unclustered Mn impurities.

Originalsprache	Englisch
Seiten (von - bis)	604-613
Seitenumfang	10
Fachzeitschrift	Physica B: Condensed Matter
Volume	536
DOIs	https://doi.org/10.1016/j.physb.2017.10.016
Publikationsstatus	Veröffentlicht - Mai 2018

Wissenschaftszweige

103 Physik, Astronomie

JKU-Schwerpunkte

Nano-, Bio- and Polymer-Systems: From Structure to Function

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10.1016/j.physb.2017.10.016

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title = "Local moment formation and magnetic coupling of Mn dopants in Bi2Se3: A low-temperature ferromagnetic resonance study",

abstract = "We compare the magnetic and electronic configuration of single Mn atoms in molecular beam epitaxy (MBE) grown Bi2Se3 thin films, focusing on electron paramagnetic (ferromagnetic) resonance (EPR and FMR, respectively) and superconducting quantum interference device (SQUID) techniques. X-ray diffraction (XRD) and electron backscatter diffraction (EBSD) reveal the expected increase of disorder with increasing concentration of magnetic guest atoms, however, Kikuchi patterns show that disorder consists majorly of μm-scale 60° twin domains in the hexagonal Bi2Se3 structure, which are promoted by the presence of single unclustered Mn impurities.",

author = "D. Savchenko and R. Tarasenko and M. Vali{\v s}ka and J. Kope{\v c}ek and Ladislav Fekete and K. Carva and Vaclav Holy and Gunther Springholz and V. Sechovsk{\'y} and J. Honolka",

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doi = "10.1016/j.physb.2017.10.016",

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T1 - Local moment formation and magnetic coupling of Mn dopants in Bi2Se3: A low-temperature ferromagnetic resonance study

AU - Savchenko, D.

AU - Tarasenko, R.

AU - Vališka, M.

AU - Kopeček, J.

AU - Fekete, Ladislav

AU - Carva, K.

AU - Holy, Vaclav

AU - Springholz, Gunther

AU - Sechovský, V.

AU - Honolka, J.

PY - 2018/5

Y1 - 2018/5

N2 - We compare the magnetic and electronic configuration of single Mn atoms in molecular beam epitaxy (MBE) grown Bi2Se3 thin films, focusing on electron paramagnetic (ferromagnetic) resonance (EPR and FMR, respectively) and superconducting quantum interference device (SQUID) techniques. X-ray diffraction (XRD) and electron backscatter diffraction (EBSD) reveal the expected increase of disorder with increasing concentration of magnetic guest atoms, however, Kikuchi patterns show that disorder consists majorly of μm-scale 60° twin domains in the hexagonal Bi2Se3 structure, which are promoted by the presence of single unclustered Mn impurities.

AB - We compare the magnetic and electronic configuration of single Mn atoms in molecular beam epitaxy (MBE) grown Bi2Se3 thin films, focusing on electron paramagnetic (ferromagnetic) resonance (EPR and FMR, respectively) and superconducting quantum interference device (SQUID) techniques. X-ray diffraction (XRD) and electron backscatter diffraction (EBSD) reveal the expected increase of disorder with increasing concentration of magnetic guest atoms, however, Kikuchi patterns show that disorder consists majorly of μm-scale 60° twin domains in the hexagonal Bi2Se3 structure, which are promoted by the presence of single unclustered Mn impurities.

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DO - 10.1016/j.physb.2017.10.016

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SN - 0921-4526

VL - 536

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EP - 613

JO - Physica B: Condensed Matter

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