Dynamic competition between Cooper pair and spin density wave condensation
Quantum matter phases may coexist microscopically even when they display competing tendencies. A fundamental question is whether such a competition can be avoided through the elimination of one phase while the other one condenses into the ground state. Here, we present a high-resolution neutron spec...
Saved in:
| Main Authors: | , , , , , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2025-05-01
|
| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.7.023131 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849313021999972352 |
|---|---|
| author | B. Decrausaz M. Pikulski O. Ivashko N. B. Christensen J. Choi L. Udby Ch. Niedermayer K. Lefmann H. M. Rønnow J. Mesot J. Ollivier T. Kurosawa N. Momono M. Oda J. Chang D. G. Mazzone |
| author_facet | B. Decrausaz M. Pikulski O. Ivashko N. B. Christensen J. Choi L. Udby Ch. Niedermayer K. Lefmann H. M. Rønnow J. Mesot J. Ollivier T. Kurosawa N. Momono M. Oda J. Chang D. G. Mazzone |
| author_sort | B. Decrausaz |
| collection | DOAJ |
| description | Quantum matter phases may coexist microscopically even when they display competing tendencies. A fundamental question is whether such a competition can be avoided through the elimination of one phase while the other one condenses into the ground state. Here, we present a high-resolution neutron spectroscopy study of the low-energy spin excitations in the high-temperature superconductor La_{1.855}Sr_{0.145}CuO_{4}. In the normal state, we find low-energy magnetic fluctuations at incommensurate reciprocal lattice positions where spin-density-wave order emerges at lower Sr concentration or at high magnetic fields. While these spin excitations are largely suppressed by the emergence of the superconducting spin gap, some low-energy magnetic fluctuations persist deep inside the superconducting state. We interpret this result in terms of a dynamic competition between superconductivity and magnetism, where superconductivity impedes the condensation of low-energy magnetic fluctuations through the formation of magnetically mediated Cooper pairs. |
| format | Article |
| id | doaj-art-40ca40bb43284dc0a0e111b0c8a9fd42 |
| institution | Kabale University |
| issn | 2643-1564 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj-art-40ca40bb43284dc0a0e111b0c8a9fd422025-08-20T03:52:52ZengAmerican Physical SocietyPhysical Review Research2643-15642025-05-017202313110.1103/PhysRevResearch.7.023131Dynamic competition between Cooper pair and spin density wave condensationB. DecrausazM. PikulskiO. IvashkoN. B. ChristensenJ. ChoiL. UdbyCh. NiedermayerK. LefmannH. M. RønnowJ. MesotJ. OllivierT. KurosawaN. MomonoM. OdaJ. ChangD. G. MazzoneQuantum matter phases may coexist microscopically even when they display competing tendencies. A fundamental question is whether such a competition can be avoided through the elimination of one phase while the other one condenses into the ground state. Here, we present a high-resolution neutron spectroscopy study of the low-energy spin excitations in the high-temperature superconductor La_{1.855}Sr_{0.145}CuO_{4}. In the normal state, we find low-energy magnetic fluctuations at incommensurate reciprocal lattice positions where spin-density-wave order emerges at lower Sr concentration or at high magnetic fields. While these spin excitations are largely suppressed by the emergence of the superconducting spin gap, some low-energy magnetic fluctuations persist deep inside the superconducting state. We interpret this result in terms of a dynamic competition between superconductivity and magnetism, where superconductivity impedes the condensation of low-energy magnetic fluctuations through the formation of magnetically mediated Cooper pairs.http://doi.org/10.1103/PhysRevResearch.7.023131 |
| spellingShingle | B. Decrausaz M. Pikulski O. Ivashko N. B. Christensen J. Choi L. Udby Ch. Niedermayer K. Lefmann H. M. Rønnow J. Mesot J. Ollivier T. Kurosawa N. Momono M. Oda J. Chang D. G. Mazzone Dynamic competition between Cooper pair and spin density wave condensation Physical Review Research |
| title | Dynamic competition between Cooper pair and spin density wave condensation |
| title_full | Dynamic competition between Cooper pair and spin density wave condensation |
| title_fullStr | Dynamic competition between Cooper pair and spin density wave condensation |
| title_full_unstemmed | Dynamic competition between Cooper pair and spin density wave condensation |
| title_short | Dynamic competition between Cooper pair and spin density wave condensation |
| title_sort | dynamic competition between cooper pair and spin density wave condensation |
| url | http://doi.org/10.1103/PhysRevResearch.7.023131 |
| work_keys_str_mv | AT bdecrausaz dynamiccompetitionbetweencooperpairandspindensitywavecondensation AT mpikulski dynamiccompetitionbetweencooperpairandspindensitywavecondensation AT oivashko dynamiccompetitionbetweencooperpairandspindensitywavecondensation AT nbchristensen dynamiccompetitionbetweencooperpairandspindensitywavecondensation AT jchoi dynamiccompetitionbetweencooperpairandspindensitywavecondensation AT ludby dynamiccompetitionbetweencooperpairandspindensitywavecondensation AT chniedermayer dynamiccompetitionbetweencooperpairandspindensitywavecondensation AT klefmann dynamiccompetitionbetweencooperpairandspindensitywavecondensation AT hmrønnow dynamiccompetitionbetweencooperpairandspindensitywavecondensation AT jmesot dynamiccompetitionbetweencooperpairandspindensitywavecondensation AT jollivier dynamiccompetitionbetweencooperpairandspindensitywavecondensation AT tkurosawa dynamiccompetitionbetweencooperpairandspindensitywavecondensation AT nmomono dynamiccompetitionbetweencooperpairandspindensitywavecondensation AT moda dynamiccompetitionbetweencooperpairandspindensitywavecondensation AT jchang dynamiccompetitionbetweencooperpairandspindensitywavecondensation AT dgmazzone dynamiccompetitionbetweencooperpairandspindensitywavecondensation |