Universal behavior of the bosonic metallic ground state in a two-dimensional superconductor
Abstract Anomalous metallic behavior, marked by a saturating finite resistivity much lower than the Drude estimate, has been observed in a wide range of two-dimensional superconductors. Utilizing the electrostatically gated LaAlO3/SrTiO3 interface as a versatile platform for superconductor-metal qua...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2021-02-01
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| Series: | npj Quantum Materials |
| Online Access: | https://doi.org/10.1038/s41535-021-00312-x |
| _version_ | 1819042261485223936 |
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| author | Zhuoyu Chen Bai Yang Wang Adrian G. Swartz Hyeok Yoon Yasuyuki Hikita Srinivas Raghu Harold Y. Hwang |
| author_facet | Zhuoyu Chen Bai Yang Wang Adrian G. Swartz Hyeok Yoon Yasuyuki Hikita Srinivas Raghu Harold Y. Hwang |
| author_sort | Zhuoyu Chen |
| collection | DOAJ |
| description | Abstract Anomalous metallic behavior, marked by a saturating finite resistivity much lower than the Drude estimate, has been observed in a wide range of two-dimensional superconductors. Utilizing the electrostatically gated LaAlO3/SrTiO3 interface as a versatile platform for superconductor-metal quantum phase transitions, we probe variations in the gate, magnetic field, and temperature to construct a phase diagram crossing from superconductor, anomalous metal, vortex liquid, to the Drude metal state, combining longitudinal and Hall resistivity measurements. We find that the anomalous metal phases induced by gating and magnetic field, although differing in symmetry, are connected in the phase diagram and exhibit similar magnetic field response approaching zero temperature. Namely, within a finite regime of the anomalous metal state, the longitudinal resistivity linearly depends on the field while the Hall resistivity diminishes, indicating an emergent particle-hole symmetry. The universal behavior highlights the uniqueness of the quantum bosonic metallic state, distinct from bosonic insulators and vortex liquids. |
| first_indexed | 2024-12-21T09:38:05Z |
| format | Article |
| id | doaj.art-d095b766165d490e89868eafaa188641 |
| institution | Directory Open Access Journal |
| issn | 2397-4648 |
| language | English |
| last_indexed | 2024-12-21T09:38:05Z |
| publishDate | 2021-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Quantum Materials |
| spelling | doaj.art-d095b766165d490e89868eafaa1886412022-12-21T19:08:34ZengNature Portfolionpj Quantum Materials2397-46482021-02-01611610.1038/s41535-021-00312-xUniversal behavior of the bosonic metallic ground state in a two-dimensional superconductorZhuoyu Chen0Bai Yang Wang1Adrian G. Swartz2Hyeok Yoon3Yasuyuki Hikita4Srinivas Raghu5Harold Y. Hwang6Geballe Laboratory for Advanced Materials, Stanford UniversityGeballe Laboratory for Advanced Materials, Stanford UniversityGeballe Laboratory for Advanced Materials, Stanford UniversityGeballe Laboratory for Advanced Materials, Stanford UniversityGeballe Laboratory for Advanced Materials, Stanford UniversityGeballe Laboratory for Advanced Materials, Stanford UniversityGeballe Laboratory for Advanced Materials, Stanford UniversityAbstract Anomalous metallic behavior, marked by a saturating finite resistivity much lower than the Drude estimate, has been observed in a wide range of two-dimensional superconductors. Utilizing the electrostatically gated LaAlO3/SrTiO3 interface as a versatile platform for superconductor-metal quantum phase transitions, we probe variations in the gate, magnetic field, and temperature to construct a phase diagram crossing from superconductor, anomalous metal, vortex liquid, to the Drude metal state, combining longitudinal and Hall resistivity measurements. We find that the anomalous metal phases induced by gating and magnetic field, although differing in symmetry, are connected in the phase diagram and exhibit similar magnetic field response approaching zero temperature. Namely, within a finite regime of the anomalous metal state, the longitudinal resistivity linearly depends on the field while the Hall resistivity diminishes, indicating an emergent particle-hole symmetry. The universal behavior highlights the uniqueness of the quantum bosonic metallic state, distinct from bosonic insulators and vortex liquids.https://doi.org/10.1038/s41535-021-00312-x |
| spellingShingle | Zhuoyu Chen Bai Yang Wang Adrian G. Swartz Hyeok Yoon Yasuyuki Hikita Srinivas Raghu Harold Y. Hwang Universal behavior of the bosonic metallic ground state in a two-dimensional superconductor npj Quantum Materials |
| title | Universal behavior of the bosonic metallic ground state in a two-dimensional superconductor |
| title_full | Universal behavior of the bosonic metallic ground state in a two-dimensional superconductor |
| title_fullStr | Universal behavior of the bosonic metallic ground state in a two-dimensional superconductor |
| title_full_unstemmed | Universal behavior of the bosonic metallic ground state in a two-dimensional superconductor |
| title_short | Universal behavior of the bosonic metallic ground state in a two-dimensional superconductor |
| title_sort | universal behavior of the bosonic metallic ground state in a two dimensional superconductor |
| url | https://doi.org/10.1038/s41535-021-00312-x |
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