Quantum Noise Spectroscopy of Criticality in an Atomically Thin Magnet
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866911989132951552 |
|---|---|
| author | Ziffer, Mark E. Machado, Francisco Ursprung, Benedikt Lozovoi, Artur Tazi, Aya Batoul Yuan, Zhiyang Ziebel, Michael E. Delord, Tom Zeng, Nanyu Telford, Evan Chica, Daniel G. deQuilettes, Dane W. Zhu, Xiaoyang Hone, James C. Shepard, Kenneth L. Roy, Xavier de Leon, Nathalie P. Davis, Emily J. Chatterjee, Shubhayu Meriles, Carlos A. Owen, Jonathan S. Schuck, P. James Pasupathy, Abhay N. |
| author_facet | Ziffer, Mark E. Machado, Francisco Ursprung, Benedikt Lozovoi, Artur Tazi, Aya Batoul Yuan, Zhiyang Ziebel, Michael E. Delord, Tom Zeng, Nanyu Telford, Evan Chica, Daniel G. deQuilettes, Dane W. Zhu, Xiaoyang Hone, James C. Shepard, Kenneth L. Roy, Xavier de Leon, Nathalie P. Davis, Emily J. Chatterjee, Shubhayu Meriles, Carlos A. Owen, Jonathan S. Schuck, P. James Pasupathy, Abhay N. |
| contents | Dynamic critical fluctuations in magnetic materials encode important information about magnetic ordering in the associated critical exponents. Using nitrogen-vacancy centers in diamond, we implement $T_2$ (spin-decoherence) noise magnetometry to study critical dynamics in a 2D Van der Waals magnet CrSBr. By analyzing NV decoherence on time scales approaching the characteristic correlation time $τ_c$ of critical fluctuations, we extract the critical exponent $ν$ for the correlation length. Our result deviates from the Ising prediction and highlights the role of long-range dipolar interactions in 2D CrSBr. Furthermore, analyzing the divergence of the correlation length suggests the possibility of 2D-XY criticality in CrSBr in a temperature window near $T_C$ where static magnetic domains are absent. Our work provides a first demonstration of $T_2$ noise magnetometry to quantitatively analyze critical scaling behavior in 2D materials. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_05614 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Quantum Noise Spectroscopy of Criticality in an Atomically Thin Magnet Ziffer, Mark E. Machado, Francisco Ursprung, Benedikt Lozovoi, Artur Tazi, Aya Batoul Yuan, Zhiyang Ziebel, Michael E. Delord, Tom Zeng, Nanyu Telford, Evan Chica, Daniel G. deQuilettes, Dane W. Zhu, Xiaoyang Hone, James C. Shepard, Kenneth L. Roy, Xavier de Leon, Nathalie P. Davis, Emily J. Chatterjee, Shubhayu Meriles, Carlos A. Owen, Jonathan S. Schuck, P. James Pasupathy, Abhay N. Mesoscale and Nanoscale Physics Quantum Physics Dynamic critical fluctuations in magnetic materials encode important information about magnetic ordering in the associated critical exponents. Using nitrogen-vacancy centers in diamond, we implement $T_2$ (spin-decoherence) noise magnetometry to study critical dynamics in a 2D Van der Waals magnet CrSBr. By analyzing NV decoherence on time scales approaching the characteristic correlation time $τ_c$ of critical fluctuations, we extract the critical exponent $ν$ for the correlation length. Our result deviates from the Ising prediction and highlights the role of long-range dipolar interactions in 2D CrSBr. Furthermore, analyzing the divergence of the correlation length suggests the possibility of 2D-XY criticality in CrSBr in a temperature window near $T_C$ where static magnetic domains are absent. Our work provides a first demonstration of $T_2$ noise magnetometry to quantitatively analyze critical scaling behavior in 2D materials. |
| title | Quantum Noise Spectroscopy of Criticality in an Atomically Thin Magnet |
| topic | Mesoscale and Nanoscale Physics Quantum Physics |
| url | https://arxiv.org/abs/2407.05614 |