Direct visualization of phase separation between superconducting and nematic domains in Co-doped CaFe2As2 close to a first-order phase transition
We show that biaxial strain induces alternating tetragonal superconducting and orthorhombic nematic domains in Co-substituted CaFe2As2. We use atomic force, magnetic force, and scanning tunneling microscopy to identify the domains and characterize their properties, finding in particular that tetrago...
| Autores: | , , , , , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2018 |
| País: | España |
| Institución: | Universidad Autónoma de Madrid |
| Repositorio: | Biblos-e Archivo. Repositorio Institucional de la UAM |
| Idioma: | inglés |
| OAI Identifier: | oai:repositorio.uam.es:10486/689738 |
| Acceso en línea: | http://hdl.handle.net/10486/689738 https://dx.doi.org/10.1103/PhysRevB.97.014505 |
| Access Level: | acceso abierto |
| Palabra clave: | First order phase transitions Microphase separation Nematic order Phase diagrams Phase transitions Phase transitions by order Quantum criticality Superconducting phase transition Superconductivity Vortices in superconductors Física |
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Direct visualization of phase separation between superconducting and nematic domains in Co-doped CaFe2As2 close to a first-order phase transitionFente, AntónCorrea-Orellana, AlexandreBöhmer, Anna E.Kreyssig, AndreasRan, S.Bud'Ko, Sergey L.Canfield, Paul C.Mompean, Federico J.García-Hernández, MarMunuera, CarmenGuillamón Gómez, IsabelSuderow Rodríguez, Hermann JesúsFirst order phase transitionsMicrophase separationNematic orderPhase diagramsPhase transitionsPhase transitions by orderQuantum criticalitySuperconducting phase transitionSuperconductivityVortices in superconductorsFísicaWe show that biaxial strain induces alternating tetragonal superconducting and orthorhombic nematic domains in Co-substituted CaFe2As2. We use atomic force, magnetic force, and scanning tunneling microscopy to identify the domains and characterize their properties, finding in particular that tetragonal superconducting domains are very elongated, more than several tens of micrometers long and about 30 nm wide; have the same Tc as unstrained samples; and hold vortices in a magnetic field. Thus, biaxial strain produces a phase-separated state, where each phase is equivalent to what is found on either side of the first-order phase transition between antiferromagnetic orthorhombic and superconducting tetragonal phases found in unstrained samples when changing Co concentration. Having such alternating superconducting domains separated by normal conducting domains with sizes of the order of the coherence length opens opportunities to build Josephson junction networks or vortex pinning arrays and suggests that first-order quantum phase transitions lead to nanometric-size phase separation under the influence of strainWork done in Madrid was supported by the Spanish Ministry of Economy and Competitiveness (Grants No. FIS2014-54498-R, No. MDM-2014-0377, No. MAT2014-52405-C2-2-R, No. RYC-2014-16626, and No. RYC-2014-15093), by the Comunidad de Madrid through program Nanofrontmag-CM (S2013/MIT-2850), by European Research Council PNICTEYES Grant Agreement No. 679080, by FP7-PEOPLE-2013-CIG 618321, by the EU Flagship Graphene Core1 under Grant Agreement No. 696656, by COST-EU, Grant No. CA16218 and by Axa Research Fund. SEGAINVEX-UAM is also acknowledged. Work done in Ames Lab was supported by the U.S. Department of Energy, Office of Basic Energy Science, Division of Materials Sciences and Engineering. Ames Laboratory is operated for the U.S. Department of Energy by Iowa State University under Contract No. DE-AC02-07CH11358American Physical SocietyDepartamento de Física de la Materia CondensadaFacultad de Ciencias20182018-01-09research articlehttp://purl.org/coar/resource_type/c_2df8fbb1VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10486/689738https://dx.doi.org/10.1103/PhysRevB.97.014505reponame:Biblos-e Archivo. Repositorio Institucional de la UAMinstname:Universidad Autónoma de MadridInglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:repositorio.uam.es:10486/6897382026-06-23T12:46:27Z |
| dc.title.none.fl_str_mv |
Direct visualization of phase separation between superconducting and nematic domains in Co-doped CaFe2As2 close to a first-order phase transition |
| title |
Direct visualization of phase separation between superconducting and nematic domains in Co-doped CaFe2As2 close to a first-order phase transition |
| spellingShingle |
Direct visualization of phase separation between superconducting and nematic domains in Co-doped CaFe2As2 close to a first-order phase transition Fente, Antón First order phase transitions Microphase separation Nematic order Phase diagrams Phase transitions Phase transitions by order Quantum criticality Superconducting phase transition Superconductivity Vortices in superconductors Física |
| title_short |
Direct visualization of phase separation between superconducting and nematic domains in Co-doped CaFe2As2 close to a first-order phase transition |
| title_full |
Direct visualization of phase separation between superconducting and nematic domains in Co-doped CaFe2As2 close to a first-order phase transition |
| title_fullStr |
Direct visualization of phase separation between superconducting and nematic domains in Co-doped CaFe2As2 close to a first-order phase transition |
| title_full_unstemmed |
Direct visualization of phase separation between superconducting and nematic domains in Co-doped CaFe2As2 close to a first-order phase transition |
| title_sort |
Direct visualization of phase separation between superconducting and nematic domains in Co-doped CaFe2As2 close to a first-order phase transition |
| dc.creator.none.fl_str_mv |
Fente, Antón Correa-Orellana, Alexandre Böhmer, Anna E. Kreyssig, Andreas Ran, S. Bud'Ko, Sergey L. Canfield, Paul C. Mompean, Federico J. García-Hernández, Mar Munuera, Carmen Guillamón Gómez, Isabel Suderow Rodríguez, Hermann Jesús |
| author |
Fente, Antón |
| author_facet |
Fente, Antón Correa-Orellana, Alexandre Böhmer, Anna E. Kreyssig, Andreas Ran, S. Bud'Ko, Sergey L. Canfield, Paul C. Mompean, Federico J. García-Hernández, Mar Munuera, Carmen Guillamón Gómez, Isabel Suderow Rodríguez, Hermann Jesús |
| author_role |
author |
| author2 |
Correa-Orellana, Alexandre Böhmer, Anna E. Kreyssig, Andreas Ran, S. Bud'Ko, Sergey L. Canfield, Paul C. Mompean, Federico J. García-Hernández, Mar Munuera, Carmen Guillamón Gómez, Isabel Suderow Rodríguez, Hermann Jesús |
| author2_role |
author author author author author author author author author author author |
| dc.contributor.none.fl_str_mv |
Departamento de Física de la Materia Condensada Facultad de Ciencias |
| dc.subject.none.fl_str_mv |
First order phase transitions Microphase separation Nematic order Phase diagrams Phase transitions Phase transitions by order Quantum criticality Superconducting phase transition Superconductivity Vortices in superconductors Física |
| topic |
First order phase transitions Microphase separation Nematic order Phase diagrams Phase transitions Phase transitions by order Quantum criticality Superconducting phase transition Superconductivity Vortices in superconductors Física |
| description |
We show that biaxial strain induces alternating tetragonal superconducting and orthorhombic nematic domains in Co-substituted CaFe2As2. We use atomic force, magnetic force, and scanning tunneling microscopy to identify the domains and characterize their properties, finding in particular that tetragonal superconducting domains are very elongated, more than several tens of micrometers long and about 30 nm wide; have the same Tc as unstrained samples; and hold vortices in a magnetic field. Thus, biaxial strain produces a phase-separated state, where each phase is equivalent to what is found on either side of the first-order phase transition between antiferromagnetic orthorhombic and superconducting tetragonal phases found in unstrained samples when changing Co concentration. Having such alternating superconducting domains separated by normal conducting domains with sizes of the order of the coherence length opens opportunities to build Josephson junction networks or vortex pinning arrays and suggests that first-order quantum phase transitions lead to nanometric-size phase separation under the influence of strain |
| publishDate |
2018 |
| dc.date.none.fl_str_mv |
2018 2018-01-09 |
| dc.type.none.fl_str_mv |
research article http://purl.org/coar/resource_type/c_2df8fbb1 VoR http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/10486/689738 https://dx.doi.org/10.1103/PhysRevB.97.014505 |
| url |
http://hdl.handle.net/10486/689738 https://dx.doi.org/10.1103/PhysRevB.97.014505 |
| dc.language.none.fl_str_mv |
Inglés eng |
| language_invalid_str_mv |
Inglés |
| language |
eng |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 |
| dc.rights.openaire.fl_str_mv |
info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
open access http://purl.org/coar/access_right/c_abf2 |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
application/pdf |
| dc.publisher.none.fl_str_mv |
American Physical Society |
| publisher.none.fl_str_mv |
American Physical Society |
| dc.source.none.fl_str_mv |
reponame:Biblos-e Archivo. Repositorio Institucional de la UAM instname:Universidad Autónoma de Madrid |
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Universidad Autónoma de Madrid |
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Biblos-e Archivo. Repositorio Institucional de la UAM |
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Biblos-e Archivo. Repositorio Institucional de la UAM |
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15.300719 |