Cyclotron motion without magnetic field
Non-trivial Bloch band overlaps endow rich phenomena to a wide variety of quantum materials. The most prominent example is a transverse current in the absence of a magnetic field (i.e. the anomalous Hall effect). Here we show that, in addition to a dc Hall effect, anomalous Hall materials possess ci...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Online Access: | https://hdl.handle.net/10356/142125 |
| _version_ | 1811680316675325952 |
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| author | Hasdeo, Eddwi Hesky Frenzel, Alex James Song, Justin Chien Wen |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Hasdeo, Eddwi Hesky Frenzel, Alex James Song, Justin Chien Wen |
| author_sort | Hasdeo, Eddwi Hesky |
| collection | NTU |
| description | Non-trivial Bloch band overlaps endow rich phenomena to a wide variety of quantum materials. The most prominent example is a transverse current in the absence of a magnetic field (i.e. the anomalous Hall effect). Here we show that, in addition to a dc Hall effect, anomalous Hall materials possess circulating currents and cyclotron motion without magnetic field. These are generated from the intricate wavefunction dynamics within the unit cell. Curiously, anomalous cyclotron motion exhibits an intrinsic decay in time (even in pristine materials) displaying a characteristic power law decay. This reveals an intrinsic dephasing similar to that of inhomogeneous broadening of spins. Circulating currents can manifest as the emission of circularly polarized light pulses in response to an incident linearly polarized (pulsed) electric field, and provide a direct means of interrogating a type of Zitterbewegung of quantum materials with broken time reversal symmetry. |
| first_indexed | 2024-10-01T03:23:07Z |
| format | Journal Article |
| id | ntu-10356/142125 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:23:07Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1421252023-02-28T20:09:27Z Cyclotron motion without magnetic field Hasdeo, Eddwi Hesky Frenzel, Alex James Song, Justin Chien Wen School of Physical and Mathematical Sciences Institute of High Performance Computing Agency for Science, Technology, and Research Science::Physics Berry Phase Berry Curvature Non-trivial Bloch band overlaps endow rich phenomena to a wide variety of quantum materials. The most prominent example is a transverse current in the absence of a magnetic field (i.e. the anomalous Hall effect). Here we show that, in addition to a dc Hall effect, anomalous Hall materials possess circulating currents and cyclotron motion without magnetic field. These are generated from the intricate wavefunction dynamics within the unit cell. Curiously, anomalous cyclotron motion exhibits an intrinsic decay in time (even in pristine materials) displaying a characteristic power law decay. This reveals an intrinsic dephasing similar to that of inhomogeneous broadening of spins. Circulating currents can manifest as the emission of circularly polarized light pulses in response to an incident linearly polarized (pulsed) electric field, and provide a direct means of interrogating a type of Zitterbewegung of quantum materials with broken time reversal symmetry. Published version 2020-06-16T04:22:09Z 2020-06-16T04:22:09Z 2019 Journal Article Hasdeo, E. H., Frenzel, A. J., & Song, J. C. W. (2019). Cyclotron motion without magnetic field. New Journal of Physics, 21(8), 083026-. doi:10.1088/1367-2630/ab351c 1367-2630 https://hdl.handle.net/10356/142125 10.1088/1367-2630/ab351c 2-s2.0-85072625989 8 21 en New Journal of Physics 10.21979/N9/B4DGRY © 2019 The Author(s) (Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft). Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. application/pdf |
| spellingShingle | Science::Physics Berry Phase Berry Curvature Hasdeo, Eddwi Hesky Frenzel, Alex James Song, Justin Chien Wen Cyclotron motion without magnetic field |
| title | Cyclotron motion without magnetic field |
| title_full | Cyclotron motion without magnetic field |
| title_fullStr | Cyclotron motion without magnetic field |
| title_full_unstemmed | Cyclotron motion without magnetic field |
| title_short | Cyclotron motion without magnetic field |
| title_sort | cyclotron motion without magnetic field |
| topic | Science::Physics Berry Phase Berry Curvature |
| url | https://hdl.handle.net/10356/142125 |
| work_keys_str_mv | AT hasdeoeddwihesky cyclotronmotionwithoutmagneticfield AT frenzelalexjames cyclotronmotionwithoutmagneticfield AT songjustinchienwen cyclotronmotionwithoutmagneticfield |