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Title: Visualization and manipulation of magnetic domains in the quasi-two-dimensional material F e 3 GeT e 2

Abstract

The magnetic domains in two-dimensional layered material Fe3GeTe2 are studied by using a variable-temperature scanning tunneling microscope with a magnetic tip after in situ cleaving of single crystals. A stripy domain structure is revealed in a zero-field-cooled sample below the ferromagnetic transition temperature of 205 K, which is replaced by separate double-walled domains and bubble domains when cooling the sample under a magnetic field of a ferromagnetic Ni tip. The Ni tip can further convert the double-walled domain to a bubble domain pattern as well as move the Neel-type chiral bubble in submicrometer distance. The temperature-dependent evolutions of both zero-field-cooled and field-cooled domain structures correlate well with the bulk magnetization from magnetometry measurements. Furthermore, atomic resolution scanning tunneling images and spectroscopy are acquired to understand the atomic and electronic structures of the material, which are further corroborated by first-principles calculations.

Authors:
ORCiD logo [1];  [2]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1];  [3]; ORCiD logo [1];  [2]; ORCiD logo [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Sungkyunkwan Univ., Kyonggi-do (Korea)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Institute for Basic Science (IBS), Pohang (Korea)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1489608
Alternate Identifier(s):
OSTI ID: 1417695
Grant/Contract Number:  
AC05-00OR22725; AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 97; Journal Issue: 1; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Nguyen, Giang D., Lee, Jinhwan, Berlijn, Tom, Zou, Qiang, Hus, Saban M., Park, Jewook, Gai, Zheng, Lee, Changgu, and Li, An -Ping. Visualization and manipulation of magnetic domains in the quasi-two-dimensional material Fe3GeTe2. United States: N. p., 2018. Web. doi:10.1103/PhysRevB.97.014425.
Nguyen, Giang D., Lee, Jinhwan, Berlijn, Tom, Zou, Qiang, Hus, Saban M., Park, Jewook, Gai, Zheng, Lee, Changgu, & Li, An -Ping. Visualization and manipulation of magnetic domains in the quasi-two-dimensional material Fe3GeTe2. United States. https://doi.org/10.1103/PhysRevB.97.014425
Nguyen, Giang D., Lee, Jinhwan, Berlijn, Tom, Zou, Qiang, Hus, Saban M., Park, Jewook, Gai, Zheng, Lee, Changgu, and Li, An -Ping. Mon . "Visualization and manipulation of magnetic domains in the quasi-two-dimensional material Fe3GeTe2". United States. https://doi.org/10.1103/PhysRevB.97.014425. https://www.osti.gov/servlets/purl/1489608.
@article{osti_1489608,
title = {Visualization and manipulation of magnetic domains in the quasi-two-dimensional material Fe3GeTe2},
author = {Nguyen, Giang D. and Lee, Jinhwan and Berlijn, Tom and Zou, Qiang and Hus, Saban M. and Park, Jewook and Gai, Zheng and Lee, Changgu and Li, An -Ping},
abstractNote = {The magnetic domains in two-dimensional layered material Fe3GeTe2 are studied by using a variable-temperature scanning tunneling microscope with a magnetic tip after in situ cleaving of single crystals. A stripy domain structure is revealed in a zero-field-cooled sample below the ferromagnetic transition temperature of 205 K, which is replaced by separate double-walled domains and bubble domains when cooling the sample under a magnetic field of a ferromagnetic Ni tip. The Ni tip can further convert the double-walled domain to a bubble domain pattern as well as move the Neel-type chiral bubble in submicrometer distance. The temperature-dependent evolutions of both zero-field-cooled and field-cooled domain structures correlate well with the bulk magnetization from magnetometry measurements. Furthermore, atomic resolution scanning tunneling images and spectroscopy are acquired to understand the atomic and electronic structures of the material, which are further corroborated by first-principles calculations.},
doi = {10.1103/PhysRevB.97.014425},
journal = {Physical Review B},
number = 1,
volume = 97,
place = {United States},
year = {Mon Jan 22 00:00:00 EST 2018},
month = {Mon Jan 22 00:00:00 EST 2018}
}

Journal Article:

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Cited by: 59 works
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Figures / Tables:

Figure 1 Figure 1: The evolution of ZFC magnetic domains of cleaved Fe3GeTe2 visualized by STM imaging with a Ni tip while increasing sample temperature from 120 K to 210 K. The semitransparent overlays in (a) illustrate the magnetizations parallel (P, red color) and antiparallel (AP, blue color) to the tip magnetization.more » The Ni tip is kept 10 mm away from the surface when cooling from the room temperature to 120 K to avoid the effect of Ni tip stray field on the formation of the magnetic domains. During warming up, the Ni is kept 1 µm away from the surface at the image corner. The scanning parameters are kept the same of Vs = -0.5 V, I = 50 pA.« less

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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.