Possible quantum paramagnetism in compressed Sr2IrO4
The effect of compression on the magnetic ground state of Sr[subscript 2]IrO[subscript 4] is studied with x-ray resonant techniques in the diamond anvil cell. The weak interlayer exchange coupling between square-planar 2D IrO[subscript 2] layers is readily modified upon compression, with a crossover...
| Main Authors: | , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2020
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| Online Access: | https://hdl.handle.net/1721.1/125722 |
| _version_ | 1826190115092824064 |
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| author | Haskel, D. Fabbris, G. Kim, J. H. Veiga, L. S. I. Mardegan, J. R. L. Escanhoela, C. A. Chikara, S. Struzhkin, V. Senthil, T. Kim, B. J. Cao, G. Kim, J.-W. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Haskel, D. Fabbris, G. Kim, J. H. Veiga, L. S. I. Mardegan, J. R. L. Escanhoela, C. A. Chikara, S. Struzhkin, V. Senthil, T. Kim, B. J. Cao, G. Kim, J.-W. |
| author_sort | Haskel, D. |
| collection | MIT |
| description | The effect of compression on the magnetic ground state of Sr[subscript 2]IrO[subscript 4] is studied with x-ray resonant techniques in the diamond anvil cell. The weak interlayer exchange coupling between square-planar 2D IrO[subscript 2] layers is readily modified upon compression, with a crossover between magnetic structures around 7 GPa mimicking the effect of an applied magnetic field at ambient pressure. Higher pressures drive an order-disorder magnetic phase transition with no magnetic order detected above 17–20 GPa. The persistence of strong exchange interactions between J[subscript eff]=1/2 magnetic moments within the insulating IrO[subscript 2] layers up to at least 35 GPa points to a highly frustrated magnetic state in compressed Sr[subscript 2]IrO[subscript 4], opening the door for realization of novel quantum paramagnetic phases driven by extended 5d orbitals with entangled spin and orbital degrees of freedom. |
| first_indexed | 2024-09-23T08:35:16Z |
| format | Article |
| id | mit-1721.1/125722 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T08:35:16Z |
| publishDate | 2020 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1257222022-09-30T09:47:46Z Possible quantum paramagnetism in compressed Sr2IrO4 Possible quantum paramagnetism in compressed Sr[subscript 2]IrO[subscript 4] Haskel, D. Fabbris, G. Kim, J. H. Veiga, L. S. I. Mardegan, J. R. L. Escanhoela, C. A. Chikara, S. Struzhkin, V. Senthil, T. Kim, B. J. Cao, G. Kim, J.-W. Massachusetts Institute of Technology. Department of Physics The effect of compression on the magnetic ground state of Sr[subscript 2]IrO[subscript 4] is studied with x-ray resonant techniques in the diamond anvil cell. The weak interlayer exchange coupling between square-planar 2D IrO[subscript 2] layers is readily modified upon compression, with a crossover between magnetic structures around 7 GPa mimicking the effect of an applied magnetic field at ambient pressure. Higher pressures drive an order-disorder magnetic phase transition with no magnetic order detected above 17–20 GPa. The persistence of strong exchange interactions between J[subscript eff]=1/2 magnetic moments within the insulating IrO[subscript 2] layers up to at least 35 GPa points to a highly frustrated magnetic state in compressed Sr[subscript 2]IrO[subscript 4], opening the door for realization of novel quantum paramagnetic phases driven by extended 5d orbitals with entangled spin and orbital degrees of freedom. 2020-06-08T20:07:11Z 2020-06-08T20:07:11Z 2020-02-11 2019-11 2020-02-11T15:26:28Z Article http://purl.org/eprint/type/JournalArticle 1079-7114 https://hdl.handle.net/1721.1/125722 Haskel, D., et al., "Possible quantum paramagnetism in compressed Sr2IrO4." Physical Review Letters 124, 124 (2020): letter 067201 doi 10.1103/PhysRevLett.124.067201 ©2020 Author(s) en 10.1103/PhysRevLett.124.067201 Physical Review Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. American Physical Society application/pdf American Physical Society American Physical Society |
| spellingShingle | Haskel, D. Fabbris, G. Kim, J. H. Veiga, L. S. I. Mardegan, J. R. L. Escanhoela, C. A. Chikara, S. Struzhkin, V. Senthil, T. Kim, B. J. Cao, G. Kim, J.-W. Possible quantum paramagnetism in compressed Sr2IrO4 |
| title | Possible quantum paramagnetism in compressed Sr2IrO4 |
| title_full | Possible quantum paramagnetism in compressed Sr2IrO4 |
| title_fullStr | Possible quantum paramagnetism in compressed Sr2IrO4 |
| title_full_unstemmed | Possible quantum paramagnetism in compressed Sr2IrO4 |
| title_short | Possible quantum paramagnetism in compressed Sr2IrO4 |
| title_sort | possible quantum paramagnetism in compressed sr2iro4 |
| url | https://hdl.handle.net/1721.1/125722 |
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