Controllable Modulation to Quantum Well States on β-Sn Islands.

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Title: Controllable Modulation to Quantum Well States on β-Sn Islands.
Authors: Wang, Ze-Rui (AUTHOR), Zhao, Chen-Xiao (AUTHOR), Wang, Guan-Yong (AUTHOR), Qin, Jin (AUTHOR), Xia, Bing (AUTHOR), Yang, Bo (AUTHOR), Guan, Dan-dan (AUTHOR) ddguan@sjtu.edu.cn, Wang, Shi-Yong (AUTHOR), Zheng, Hao (AUTHOR), Li, Yao-Yi (AUTHOR), Liu, Can-hua (AUTHOR), Jia, Jin-Feng (AUTHOR) jfjia@sjtu.edu.cn
Source: Chinese Physics Letters. Sep2020, Vol. 37 Issue 9, p1-4. 4p.
Subjects: Scanning tunneling microscopy, Quantum wells, Quantum states, Tunneling spectroscopy, Islands, Electronic structure
Abstract: We investigate the surface structure and electronic properties of β-Sn islands deposited on a graphitized 6H-SiC (0001) substrate via low temperature scanning tunneling microscopy and spectroscopy. Owing to the confinement of the island geometry, quantum well states (QWSs) are formed, manifesting as equidistant peaks in the tunneling spectra. Furthermore, a distinct strip feature appears on the surfaces of odd-layer Sn islands, ranging from 15–19 layers, which is not present on the surfaces of even-layer Sn islands. The spatial distribution of strips can be modified by applying a bias pulse, using an STM tip. Furthermore, the strip-like structure shows significant impacts on the QWS. An energy splitting of the lowest unoccupied QWSs is observed in strip regions; this may be ascribed to caused the phase shift of the wave functions of the QWSs on the top surface, due to surface distortions created by the aforementioned strips. [ABSTRACT FROM AUTHOR]
Copyright of Chinese Physics Letters is the property of IOP Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Controllable Modulation to Quantum Well States on β-Sn Islands.
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  Data: <searchLink fieldCode="AR" term="%22Wang%2C+Ze-Rui%22">Wang, Ze-Rui</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhao%2C+Chen-Xiao%22">Zhao, Chen-Xiao</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Guan-Yong%22">Wang, Guan-Yong</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Qin%2C+Jin%22">Qin, Jin</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xia%2C+Bing%22">Xia, Bing</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Bo%22">Yang, Bo</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Guan%2C+Dan-dan%22">Guan, Dan-dan</searchLink> (AUTHOR)<i> ddguan@sjtu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Wang%2C+Shi-Yong%22">Wang, Shi-Yong</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zheng%2C+Hao%22">Zheng, Hao</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Yao-Yi%22">Li, Yao-Yi</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Can-hua%22">Liu, Can-hua</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jia%2C+Jin-Feng%22">Jia, Jin-Feng</searchLink> (AUTHOR)<i> jfjia@sjtu.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Chinese+Physics+Letters%22">Chinese Physics Letters</searchLink>. Sep2020, Vol. 37 Issue 9, p1-4. 4p.
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  Data: <searchLink fieldCode="DE" term="%22Scanning+tunneling+microscopy%22">Scanning tunneling microscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Quantum+wells%22">Quantum wells</searchLink><br /><searchLink fieldCode="DE" term="%22Quantum+states%22">Quantum states</searchLink><br /><searchLink fieldCode="DE" term="%22Tunneling+spectroscopy%22">Tunneling spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Islands%22">Islands</searchLink><br /><searchLink fieldCode="DE" term="%22Electronic+structure%22">Electronic structure</searchLink>
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  Label: Abstract
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  Data: We investigate the surface structure and electronic properties of β-Sn islands deposited on a graphitized 6H-SiC (0001) substrate via low temperature scanning tunneling microscopy and spectroscopy. Owing to the confinement of the island geometry, quantum well states (QWSs) are formed, manifesting as equidistant peaks in the tunneling spectra. Furthermore, a distinct strip feature appears on the surfaces of odd-layer Sn islands, ranging from 15–19 layers, which is not present on the surfaces of even-layer Sn islands. The spatial distribution of strips can be modified by applying a bias pulse, using an STM tip. Furthermore, the strip-like structure shows significant impacts on the QWS. An energy splitting of the lowest unoccupied QWSs is observed in strip regions; this may be ascribed to caused the phase shift of the wave functions of the QWSs on the top surface, due to surface distortions created by the aforementioned strips. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Chinese Physics Letters is the property of IOP Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1088/0256-307X/37/9/096801
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      – Code: eng
        Text: English
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        PageCount: 4
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    Subjects:
      – SubjectFull: Scanning tunneling microscopy
        Type: general
      – SubjectFull: Quantum wells
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      – SubjectFull: Quantum states
        Type: general
      – SubjectFull: Tunneling spectroscopy
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      – SubjectFull: Islands
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      – SubjectFull: Electronic structure
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      – TitleFull: Controllable Modulation to Quantum Well States on β-Sn Islands.
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              Text: Sep2020
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