Fluctuating Charge Order: A Universal Phenomenon in Unconventional Superconductivity?
Unconventional superconductors are characterized by various competing ordering phenomena in the normal state, such as antiferromagnetism, charge order, orbital order or nematicity. According to a widespread view, antiferromagnetic fluctuations are the dominant ordering phenomenon in cuprates and Fe...
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| Format: | Article |
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MDPI AG
2016-06-01
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| Series: | Symmetry |
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| Online Access: | http://www.mdpi.com/2073-8994/8/6/45 |
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| author | Erminald Bertel Alexander Menzel |
| author_facet | Erminald Bertel Alexander Menzel |
| author_sort | Erminald Bertel |
| collection | DOAJ |
| description | Unconventional superconductors are characterized by various competing ordering phenomena in the normal state, such as antiferromagnetism, charge order, orbital order or nematicity. According to a widespread view, antiferromagnetic fluctuations are the dominant ordering phenomenon in cuprates and Fe based superconductors and are responsible for electron pairing. In contrast, charge order is believed to be subdominant and compete with superconductivity. Here, we argue that fluctuating charge order in the (0,π) direction is a feature shared by the cuprates and the Fe based superconductors alike. Recent data and theoretical models suggest that superconductivity is brought about by charge order excitations independently from spin fluctuations. Thus, quantum fluctuations of charge order may provide an alternative to spin fluctuations as a mechanism of electron pairing in unconventional superconductors. |
| first_indexed | 2024-04-11T13:17:32Z |
| format | Article |
| id | doaj.art-e640dd8c7c2e4c06ab71e18396b14c1c |
| institution | Directory Open Access Journal |
| issn | 2073-8994 |
| language | English |
| last_indexed | 2024-04-11T13:17:32Z |
| publishDate | 2016-06-01 |
| publisher | MDPI AG |
| record_format | Article |
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| spelling | doaj.art-e640dd8c7c2e4c06ab71e18396b14c1c2022-12-22T04:22:22ZengMDPI AGSymmetry2073-89942016-06-01864510.3390/sym8060045sym8060045Fluctuating Charge Order: A Universal Phenomenon in Unconventional Superconductivity?Erminald Bertel0Alexander Menzel1Institute of Physical Chemistry, University of Innsbruck, A-6020 Innsbruck, AustriaInstitute of Physical Chemistry, University of Innsbruck, A-6020 Innsbruck, AustriaUnconventional superconductors are characterized by various competing ordering phenomena in the normal state, such as antiferromagnetism, charge order, orbital order or nematicity. According to a widespread view, antiferromagnetic fluctuations are the dominant ordering phenomenon in cuprates and Fe based superconductors and are responsible for electron pairing. In contrast, charge order is believed to be subdominant and compete with superconductivity. Here, we argue that fluctuating charge order in the (0,π) direction is a feature shared by the cuprates and the Fe based superconductors alike. Recent data and theoretical models suggest that superconductivity is brought about by charge order excitations independently from spin fluctuations. Thus, quantum fluctuations of charge order may provide an alternative to spin fluctuations as a mechanism of electron pairing in unconventional superconductors.http://www.mdpi.com/2073-8994/8/6/45iron-based superconductorscupratescharge density wavecharge orderspin orderfluctuationsphase transitionquantum critical point |
| spellingShingle | Erminald Bertel Alexander Menzel Fluctuating Charge Order: A Universal Phenomenon in Unconventional Superconductivity? Symmetry iron-based superconductors cuprates charge density wave charge order spin order fluctuations phase transition quantum critical point |
| title | Fluctuating Charge Order: A Universal Phenomenon in Unconventional Superconductivity? |
| title_full | Fluctuating Charge Order: A Universal Phenomenon in Unconventional Superconductivity? |
| title_fullStr | Fluctuating Charge Order: A Universal Phenomenon in Unconventional Superconductivity? |
| title_full_unstemmed | Fluctuating Charge Order: A Universal Phenomenon in Unconventional Superconductivity? |
| title_short | Fluctuating Charge Order: A Universal Phenomenon in Unconventional Superconductivity? |
| title_sort | fluctuating charge order a universal phenomenon in unconventional superconductivity |
| topic | iron-based superconductors cuprates charge density wave charge order spin order fluctuations phase transition quantum critical point |
| url | http://www.mdpi.com/2073-8994/8/6/45 |
| work_keys_str_mv | AT erminaldbertel fluctuatingchargeorderauniversalphenomenoninunconventionalsuperconductivity AT alexandermenzel fluctuatingchargeorderauniversalphenomenoninunconventionalsuperconductivity |