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

Department of Semiconductor Physics

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

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.

Original language	English
Pages (from-to)	604-613
Number of pages	10
Journal	Physica B: Condensed Matter
Volume	536
DOIs	https://doi.org/10.1016/j.physb.2017.10.016
Publication status	Published - May 2018

Fields of science

103 Physics, Astronomy

JKU Focus areas

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",

year = "2018",

month = may,

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

language = "English",

volume = "536",

pages = "604--613",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

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TY - JOUR

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.

UR - https://www.sciencedirect.com/science/article/pii/S0921452617307408

U2 - 10.1016/j.physb.2017.10.016

DO - 10.1016/j.physb.2017.10.016

M3 - Article

SN - 0921-4526

VL - 536

SP - 604

EP - 613

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

ER -

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

Abstract

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