| Description |
1 online resource : illustrations |
| Series |
Springer theses |
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Springer theses
|
| Contents |
Intro -- Supervisor's Foreword -- Abstract -- Acknowledgements -- Contents -- Acronyms -- 1 Introduction -- References -- 2 Background -- 2.1 Cooling Techniques -- 2.1.1 Dilution Refrigeration -- 2.1.2 Magnetic Cooling -- 2.2 Coulomb Blockade Thermometry -- 2.2.1 Outline -- 2.2.2 Orthodox Theory of Single Electron Tunnelling -- 2.2.3 Practical Measurements -- 2.3 On-Chip Refrigeration -- 2.3.1 Motivation and Principles -- 2.3.2 Techniques -- References -- 3 On-Chip Demagnetisation Cooling on a Cryogen-Free Dilution Refrigerator -- 3.1 Coulomb Blockade Thermometer Device |
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3.2 Experimental Set-Up -- 3.2.1 Mounting and Heatsinking -- 3.2.2 Electrical -- 3.3 CBT Characteristics -- 3.4 CBT Cooling -- 3.4.1 Initial Experiments -- 3.4.2 Thermal Modelling -- 3.4.3 Optimisation -- 3.5 Conclusions -- References -- 4 On-Chip Demagnetisation Cooling on a Cryogen-Filled Dilution Refrigerator -- 4.1 Experimental Set-Up -- 4.1.1 Mounting and Heatsinking -- 4.1.2 Electrical -- 4.2 CBT Measurements -- 4.2.1 Additional Techniques -- 4.2.2 Characterisation Results -- 4.3 Demagnetisation Cooling -- 4.4 Conclusions -- References |
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5 On-Chip Demagnetisation Cooling of a High Capacitance CBT -- 5.1 Experimental Set-Up -- 5.1.1 New CBT Fabrication -- 5.1.2 Precooling -- 5.2 CBT Characterisation -- 5.3 Demagnetisation Cooling -- 5.4 Heat Leaks -- 5.5 CBT Copper -- 5.6 Conclusions -- References -- 6 Summary and Outlook -- References |
| Summary |
This thesis demonstrates that an ultralow temperature refrigeration technique called "demagnetisation refrigeration" can be miniaturised and incorporated onto millimeter-sized chips to cool nanoelectronic circuits, devices and materials. Until recently, the lowest temperature ever reached in such systems was around 4 millikelvin. Here, a temperature of 1.2mK is reported in a nanoelectronic device. The thesis introduces the idea that on-chip demagnetization refrigeration can be used to cool a wide variety of nanostructures and devices to microkelvin temperatures. This brings the exciting possibility of discovering new physics, such as exotic electronic phases, in an unexplored regime and the potential to improve the performance of existing applications, including solid-state quantum technologies. Since the first demonstration of on-chip demagnetization refrigeration, described here, the technique has been taken up by other research groups around the world. The lowest on-chip temperature is currently 0.4mK. Work is now underway to adapt the technique to cool other materials and devices, ultimately leading to a platform to study nanoscale materials, devices and circuits at microkelvin temperatures |
| Notes |
"Doctoral Thesis accepted by Lancaster University, Lancaster, United Kingdom." |
| Bibliography |
Includes bibliographical references |
| Subject |
Adiabatic demagnetization.
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Electron temperature.
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Low temperature engineering.
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Materials science.
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Spectrum analysis, spectrochemistry, mass spectrometry.
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Low temperature physics.
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Technology & Engineering -- Material Science.
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Science -- Solid State Physics.
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Science -- Mechanics -- Dynamics -- Thermodynamics.
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Low temperature engineering
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Electron temperature
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Adiabatic demagnetization
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Low temperatures
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Materials science
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Solid state physics
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| Genre/Form |
Electronic books
|
| Form |
Electronic book
|
| ISBN |
9783030512330 |
|
3030512339 |
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