Imaging the Meissner effect and flux trapping in a hydride superconductor at megabar pressures using a nanoscale quantum sensor
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866910376603418624 |
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| author | Bhattacharyya, Prabudhya Chen, Wuhao Huang, Xiaoli Chatterjee, Shubhayu Huang, Benchen Kobrin, Bryce Lyu, Yuanqi Smart, Thomas J. Block, Maxwell Wang, Esther Wang, Zhipan Wu, Weijie Hsieh, Satcher Ma, He Mandyam, Srinivas Chen, Bijuan Davis, Emily Geballe, Zachary M. Zu, Chong Struzhkin, Viktor Jeanloz, Raymond Moore, Joel E. Cui, Tian Galli, Giulia Halperin, Bertrand I. Laumann, Chris R. Yao, Norman Y. |
| author_facet | Bhattacharyya, Prabudhya Chen, Wuhao Huang, Xiaoli Chatterjee, Shubhayu Huang, Benchen Kobrin, Bryce Lyu, Yuanqi Smart, Thomas J. Block, Maxwell Wang, Esther Wang, Zhipan Wu, Weijie Hsieh, Satcher Ma, He Mandyam, Srinivas Chen, Bijuan Davis, Emily Geballe, Zachary M. Zu, Chong Struzhkin, Viktor Jeanloz, Raymond Moore, Joel E. Cui, Tian Galli, Giulia Halperin, Bertrand I. Laumann, Chris R. Yao, Norman Y. |
| contents | By directly altering microscopic interactions, pressure provides a powerful tuning knob for the exploration of condensed phases and geophysical phenomena. The megabar regime represents an exciting frontier, where recent discoveries include novel high-temperature superconductors, as well as structural and valence phase transitions. However, at such high pressures, many conventional measurement techniques fail. Here, we demonstrate the ability to perform local magnetometry inside of a diamond anvil cell with sub-micron spatial resolution at megabar pressures. Our approach utilizes a shallow layer of Nitrogen-Vacancy (NV) color centers implanted directly within the anvil; crucially, we choose a crystal cut compatible with the intrinsic symmetries of the NV center to enable functionality at megabar pressures. We apply our technique to characterize a recently discovered hydride superconductor, CeH$_9$. By performing simultaneous magnetometry and electrical transport measurements, we observe the dual signatures of superconductivity: local diamagnetism characteristic of the Meissner effect and a sharp drop of the resistance to near zero. By locally mapping the Meissner effect and flux trapping, we directly image the geometry of superconducting regions, revealing significant inhomogeneities at the micron scale. Our work brings quantum sensing to the megabar frontier and enables the closed loop optimization of superhydride materials synthesis. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2306_03122 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Imaging the Meissner effect and flux trapping in a hydride superconductor at megabar pressures using a nanoscale quantum sensor Bhattacharyya, Prabudhya Chen, Wuhao Huang, Xiaoli Chatterjee, Shubhayu Huang, Benchen Kobrin, Bryce Lyu, Yuanqi Smart, Thomas J. Block, Maxwell Wang, Esther Wang, Zhipan Wu, Weijie Hsieh, Satcher Ma, He Mandyam, Srinivas Chen, Bijuan Davis, Emily Geballe, Zachary M. Zu, Chong Struzhkin, Viktor Jeanloz, Raymond Moore, Joel E. Cui, Tian Galli, Giulia Halperin, Bertrand I. Laumann, Chris R. Yao, Norman Y. Superconductivity Disordered Systems and Neural Networks Quantum Physics By directly altering microscopic interactions, pressure provides a powerful tuning knob for the exploration of condensed phases and geophysical phenomena. The megabar regime represents an exciting frontier, where recent discoveries include novel high-temperature superconductors, as well as structural and valence phase transitions. However, at such high pressures, many conventional measurement techniques fail. Here, we demonstrate the ability to perform local magnetometry inside of a diamond anvil cell with sub-micron spatial resolution at megabar pressures. Our approach utilizes a shallow layer of Nitrogen-Vacancy (NV) color centers implanted directly within the anvil; crucially, we choose a crystal cut compatible with the intrinsic symmetries of the NV center to enable functionality at megabar pressures. We apply our technique to characterize a recently discovered hydride superconductor, CeH$_9$. By performing simultaneous magnetometry and electrical transport measurements, we observe the dual signatures of superconductivity: local diamagnetism characteristic of the Meissner effect and a sharp drop of the resistance to near zero. By locally mapping the Meissner effect and flux trapping, we directly image the geometry of superconducting regions, revealing significant inhomogeneities at the micron scale. Our work brings quantum sensing to the megabar frontier and enables the closed loop optimization of superhydride materials synthesis. |
| title | Imaging the Meissner effect and flux trapping in a hydride superconductor at megabar pressures using a nanoscale quantum sensor |
| topic | Superconductivity Disordered Systems and Neural Networks Quantum Physics |
| url | https://arxiv.org/abs/2306.03122 |