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Low-Noise High-Gain Large-Bandwidth Transimpedance Amplifier with Cascode-Type Preamplifier for Cryogenic STM.

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Title: Low-Noise High-Gain Large-Bandwidth Transimpedance Amplifier with Cascode-Type Preamplifier for Cryogenic STM.
Authors: Liang, Ying-Xin1 (AUTHOR) cryoliang@qq.com
Source: Journal of Low Temperature Physics. Jan2023, Vol. 210 Issue 1/2, p357-375. 19p.
Subjects: Preamplifiers, Modulation-doped field-effect transistors, Scanning tunneling microscopy, Quantum noise, Thermal noise, Coplanar waveguides
Abstract: A low-noise high-gain large-bandwidth transimpedance amplifier (TIA) for cryogenic scanning tunneling microscope (CryoSTM) is proposed. The TIA connected with the tip-sample component in CryoSTM is called as CryoSTM-TIA. The CryoSTM-TIA has a transimpedance gain of 10 G Ω , a bandwidth of over 100 kHz, and an equivalent input noise current power spectral density less than 4 (fA) 2 / Hz at 100 kHz. The low inherent noise of the CryoSTM-TIA is due to its special design: (1) its pre-amplifier (Pre-Amp) is made of the low-noise cryogenic high electron mobility transistors; (2) the cascode-type configuration for the Pre-Amp is used to avoid Miller effect to reduce its input capacitance C A ; (3) the capacitance of the cable connected the Pre-Amp input to the tip, i.e., C I , is minimized; (4) thermal noise sources, such as the feedback resistor, are placed in the cryogenic zone. Its high gain and large-bandwidth are realized together, due to the application of the frequency compensation in the feedback loop, the reduced C A , and the minimized C I . This apparatus can be used for fast high-energy-resolution measurements of scanning tunneling spectra for low conductivity materials, especially for measuring their scanning tunneling shot noise spectra. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Low Temperature Physics is the property of Springer Nature 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: Low-Noise High-Gain Large-Bandwidth Transimpedance Amplifier with Cascode-Type Preamplifier for Cryogenic STM.
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  Data: <searchLink fieldCode="AR" term="%22Liang%2C+Ying-Xin%22">Liang, Ying-Xin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> cryoliang@qq.com</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Low+Temperature+Physics%22">Journal of Low Temperature Physics</searchLink>. Jan2023, Vol. 210 Issue 1/2, p357-375. 19p.
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  Data: <searchLink fieldCode="DE" term="%22Preamplifiers%22">Preamplifiers</searchLink><br /><searchLink fieldCode="DE" term="%22Modulation-doped+field-effect+transistors%22">Modulation-doped field-effect transistors</searchLink><br /><searchLink fieldCode="DE" term="%22Scanning+tunneling+microscopy%22">Scanning tunneling microscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Quantum+noise%22">Quantum noise</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+noise%22">Thermal noise</searchLink><br /><searchLink fieldCode="DE" term="%22Coplanar+waveguides%22">Coplanar waveguides</searchLink>
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  Data: A low-noise high-gain large-bandwidth transimpedance amplifier (TIA) for cryogenic scanning tunneling microscope (CryoSTM) is proposed. The TIA connected with the tip-sample component in CryoSTM is called as CryoSTM-TIA. The CryoSTM-TIA has a transimpedance gain of 10 G Ω , a bandwidth of over 100 kHz, and an equivalent input noise current power spectral density less than 4 (fA) 2 / Hz at 100 kHz. The low inherent noise of the CryoSTM-TIA is due to its special design: (1) its pre-amplifier (Pre-Amp) is made of the low-noise cryogenic high electron mobility transistors; (2) the cascode-type configuration for the Pre-Amp is used to avoid Miller effect to reduce its input capacitance C A ; (3) the capacitance of the cable connected the Pre-Amp input to the tip, i.e., C I , is minimized; (4) thermal noise sources, such as the feedback resistor, are placed in the cryogenic zone. Its high gain and large-bandwidth are realized together, due to the application of the frequency compensation in the feedback loop, the reduced C A , and the minimized C I . This apparatus can be used for fast high-energy-resolution measurements of scanning tunneling spectra for low conductivity materials, especially for measuring their scanning tunneling shot noise spectra. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Low Temperature Physics is the property of Springer Nature 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: 10.1007/s10909-022-02855-0
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      – Code: eng
        Text: English
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        PageCount: 19
        StartPage: 357
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      – SubjectFull: Preamplifiers
        Type: general
      – SubjectFull: Modulation-doped field-effect transistors
        Type: general
      – SubjectFull: Scanning tunneling microscopy
        Type: general
      – SubjectFull: Quantum noise
        Type: general
      – SubjectFull: Thermal noise
        Type: general
      – SubjectFull: Coplanar waveguides
        Type: general
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      – TitleFull: Low-Noise High-Gain Large-Bandwidth Transimpedance Amplifier with Cascode-Type Preamplifier for Cryogenic STM.
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              M: 01
              Text: Jan2023
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              Y: 2023
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