Millimeter-wave study of London penetration depth temperature dependence in Ba(Fe0.926Co0.074)2As2 single crystal
In-plane surface Ka-band microwave impedance of optimally doped single crystals of the Fe-based superconductor Ba(Fe0.926Co0.074)2As2 (Tc= 22.8K) was measured. Sensitive sapphire disk quasi-optical resonator with high-Tc cuprate conducting endplates was developed specially for Fe-pnictide supercondu...
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| creator | Barannik, A A Cherpak, N T N Ni Tanatar, M A Vitusevich, S A Skresanov, V N Canfield, P C Prozorov, R Glamazdin, V V Torokhtii, K I |
| description | In-plane surface Ka-band microwave impedance of optimally doped single crystals of the Fe-based superconductor Ba(Fe0.926Co0.074)2As2 (Tc= 22.8K) was measured. Sensitive sapphire disk quasi-optical resonator with high-Tc cuprate conducting endplates was developed specially for Fe-pnictide superconductors. It allowed finding temperature variation of London penetration depth in a form of power law, namely \Delta \lambda (T)~ Tn with n = 2.8 from low temperatures up to at least 0.6Tc consisted with radio-frequency measurements. This exponent points towards nodeless state with pairbreaking scattering, which can support one of the extended s-pairing symmetries. The dependence \lambda(T) at low temperatures is well described by one superconducting small-gap (\Delta \cong 0.75 in kTc units, where k is Boltzman coefficient) exponential dependence. |
| doi_str_mv | 10.48550/arxiv.1106.6266 |
| format | Article |
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Sensitive sapphire disk quasi-optical resonator with high-Tc cuprate conducting endplates was developed specially for Fe-pnictide superconductors. It allowed finding temperature variation of London penetration depth in a form of power law, namely \Delta \lambda (T)~ Tn with n = 2.8 from low temperatures up to at least 0.6Tc consisted with radio-frequency measurements. This exponent points towards nodeless state with pairbreaking scattering, which can support one of the extended s-pairing symmetries. 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The dependence \lambda(T) at low temperatures is well described by one superconducting small-gap (\Delta \cong 0.75 in kTc units, where k is Boltzman coefficient) exponential dependence.</description><subject>Extremely high frequencies</subject><subject>Group 5A compounds</subject><subject>Millimeter waves</subject><subject>Optical resonators</subject><subject>Penetration depth</subject><subject>Physics - Instrumentation and Detectors</subject><subject>Physics - Superconductivity</subject><subject>Sapphire</subject><subject>Single crystals</subject><subject>Temperature dependence</subject><issn>2331-8422</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GOX</sourceid><recordid>eNotkM9LwzAcxYMgOObuniTgRQ-t-d3uOItTYeJl95Il32pGl3ZJOt1_b-c8vcfj8Xh8ELqhJBellORRhx93yCklKldMqQs0YZzTrBSMXaFZjFtCCFMFk5JP0P7dta3bQYKQfesD4JgGe8Rdg1edt53HPXhIQSc3egt9-sIJdj2MyRDglIC34A1g5_GTvl8CyedMVR3JSSEe2CIyHJ3_bAGbcIxJt9fostFthNm_TtF6-byuXrPVx8tbtVhlWlKVUd7w-aawlBMlG6OZ0UKPViu5MUZYAyA5KGpEQSTnG8qBai4VIVRYphs-Rbfn2T8cdR_cTodjfcJSn7CMhbtzoQ_dfoCY6m03BD9eqhkpGeNlQRX_BekOZG0</recordid><startdate>20110630</startdate><enddate>20110630</enddate><creator>Barannik, A A</creator><creator>Cherpak, N T</creator><creator>N Ni</creator><creator>Tanatar, M A</creator><creator>Vitusevich, S A</creator><creator>Skresanov, V N</creator><creator>Canfield, P C</creator><creator>Prozorov, R</creator><creator>Glamazdin, V V</creator><creator>Torokhtii, K I</creator><general>Cornell University Library, arXiv.org</general><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>L6V</scope><scope>M7S</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>GOX</scope></search><sort><creationdate>20110630</creationdate><title>Millimeter-wave study of London penetration depth temperature dependence in Ba(Fe0.926Co0.074)2As2 single crystal</title><author>Barannik, A A ; 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| subjects | Extremely high frequencies Group 5A compounds Millimeter waves Optical resonators Penetration depth Physics - Instrumentation and Detectors Physics - Superconductivity Sapphire Single crystals Temperature dependence |
| title | Millimeter-wave study of London penetration depth temperature dependence in Ba(Fe0.926Co0.074)2As2 single crystal |
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