@article{ ISI:000223716300068,
Author = {Patnaik, S and Gurevich, A and Bu, SD and Kaushik, SD and Choi, J and
   Eom, CB and Larbalestier, DC},
Title = {{Thermally activated current transport in MgB2 films}},
Journal = {{PHYSICAL REVIEW B}},
Year = {{2004}},
Volume = {{70}},
Number = {{6}},
Month = {{AUG}},
Abstract = {{Thermally-activated flux flow (TAFF) resistivity above the
   irreversibility field B-i is reported for two different c-axis textured
   MgB2 superconducting films. Transport measurements at different
   perpendicular magnetic fields 0<B<9 T and temperatures from 5 to 40 K
   reveal TAFF Ohmic resistivity rho(T,B) for B>B-i described by the
   Arrhenius law, rho=rho(0) exp(-U/T) with the quadratic field dependence
   of the activation energy, U(B,T)=U-0(T){[}1-B/B-c2(T)](2). Our transport
   measurements on bulk MgB2 ceramic samples also show the TAFF behavior,
   but do not show the quadratic field dependence of U(T,B). We explain our
   data in terms of thermally-activated drift of pre-existing quenched
   dislocations in the vortex lattice. Our results indicate that thermal
   fluctuations can be essential in determining the irreversibility field
   in MgB2 though to a much lesser extent than in high-temperature
   superconductors.}},
DOI = {{10.1103/PhysRevB.70.064503}},
Article-Number = {{064503}},
ISSN = {{2469-9950}},
EISSN = {{2469-9969}},
ResearcherID-Numbers = {{Larbalestier, David/B-2277-2008
   Gurevich, Alex/A-4327-2008
   Eom, Chang-Beom/I-5567-2014
   Bu, Sang Don/B-1576-2008
   }},
ORCID-Numbers = {{Larbalestier, David/0000-0001-7098-7208
   Gurevich, Alex/0000-0003-0759-8941
   Bu, Sang Don/0000-0003-4883-1308
   Kaushik, SD/0000-0003-4265-9455}},
Unique-ID = {{ISI:000223716300068}},
}

{"_id":"MxE69vQ8nXzgCCiWP","bibbaseid":"patnaik-gurevich-bu-kaushik-choi-eom-larbalestier-thermallyactivatedcurrenttransportinmgb2films-2004","downloads":0,"creationDate":"2018-09-17T23:43:10.063Z","title":"Thermally activated current transport in MgB2 films","author_short":["Patnaik, S","Gurevich, A","Bu, S.","Kaushik, S.","Choi, J","Eom, C.","Larbalestier, D."],"year":2004,"bibtype":"article","biburl":"http://oxide.engr.wisc.edu/newWebsite/papers/oxide.bib","bibdata":{"bibtype":"article","type":"article","author":[{"propositions":[],"lastnames":["Patnaik"],"firstnames":["S"],"suffixes":[]},{"propositions":[],"lastnames":["Gurevich"],"firstnames":["A"],"suffixes":[]},{"propositions":[],"lastnames":["Bu"],"firstnames":["SD"],"suffixes":[]},{"propositions":[],"lastnames":["Kaushik"],"firstnames":["SD"],"suffixes":[]},{"propositions":[],"lastnames":["Choi"],"firstnames":["J"],"suffixes":[]},{"propositions":[],"lastnames":["Eom"],"firstnames":["CB"],"suffixes":[]},{"propositions":[],"lastnames":["Larbalestier"],"firstnames":["DC"],"suffixes":[]}],"title":"Thermally activated current transport in MgB2 films","journal":"PHYSICAL REVIEW B","year":"2004","volume":"70","number":"6","month":"AUG","abstract":"Thermally-activated flux flow (TAFF) resistivity above the irreversibility field B-i is reported for two different c-axis textured MgB2 superconducting films. Transport measurements at different perpendicular magnetic fields 0<B<9 T and temperatures from 5 to 40 K reveal TAFF Ohmic resistivity rho(T,B) for B>B-i described by the Arrhenius law, rho=rho(0) exp(-U/T) with the quadratic field dependence of the activation energy, U(B,T)=U-0(T)[1-B/B-c2(T)](2). Our transport measurements on bulk MgB2 ceramic samples also show the TAFF behavior, but do not show the quadratic field dependence of U(T,B). We explain our data in terms of thermally-activated drift of pre-existing quenched dislocations in the vortex lattice. Our results indicate that thermal fluctuations can be essential in determining the irreversibility field in MgB2 though to a much lesser extent than in high-temperature superconductors.","doi":"10.1103/PhysRevB.70.064503","article-number":"064503","issn":"2469-9950","eissn":"2469-9969","researcherid-numbers":"Larbalestier, David/B-2277-2008 Gurevich, Alex/A-4327-2008 Eom, Chang-Beom/I-5567-2014 Bu, Sang Don/B-1576-2008 ","orcid-numbers":"Larbalestier, David/0000-0001-7098-7208 Gurevich, Alex/0000-0003-0759-8941 Bu, Sang Don/0000-0003-4883-1308 Kaushik, SD/0000-0003-4265-9455","unique-id":"ISI:000223716300068","bibtex":"@article{ ISI:000223716300068,\nAuthor = {Patnaik, S and Gurevich, A and Bu, SD and Kaushik, SD and Choi, J and\n Eom, CB and Larbalestier, DC},\nTitle = {{Thermally activated current transport in MgB2 films}},\nJournal = {{PHYSICAL REVIEW B}},\nYear = {{2004}},\nVolume = {{70}},\nNumber = {{6}},\nMonth = {{AUG}},\nAbstract = {{Thermally-activated flux flow (TAFF) resistivity above the\n irreversibility field B-i is reported for two different c-axis textured\n MgB2 superconducting films. Transport measurements at different\n perpendicular magnetic fields 0<B<9 T and temperatures from 5 to 40 K\n reveal TAFF Ohmic resistivity rho(T,B) for B>B-i described by the\n Arrhenius law, rho=rho(0) exp(-U/T) with the quadratic field dependence\n of the activation energy, U(B,T)=U-0(T){[}1-B/B-c2(T)](2). Our transport\n measurements on bulk MgB2 ceramic samples also show the TAFF behavior,\n but do not show the quadratic field dependence of U(T,B). We explain our\n data in terms of thermally-activated drift of pre-existing quenched\n dislocations in the vortex lattice. Our results indicate that thermal\n fluctuations can be essential in determining the irreversibility field\n in MgB2 though to a much lesser extent than in high-temperature\n superconductors.}},\nDOI = {{10.1103/PhysRevB.70.064503}},\nArticle-Number = {{064503}},\nISSN = {{2469-9950}},\nEISSN = {{2469-9969}},\nResearcherID-Numbers = {{Larbalestier, David/B-2277-2008\n Gurevich, Alex/A-4327-2008\n Eom, Chang-Beom/I-5567-2014\n Bu, Sang Don/B-1576-2008\n }},\nORCID-Numbers = {{Larbalestier, David/0000-0001-7098-7208\n Gurevich, Alex/0000-0003-0759-8941\n Bu, Sang Don/0000-0003-4883-1308\n Kaushik, SD/0000-0003-4265-9455}},\nUnique-ID = {{ISI:000223716300068}},\n}\n\n","author_short":["Patnaik, S","Gurevich, A","Bu, S.","Kaushik, S.","Choi, J","Eom, C.","Larbalestier, D."],"key":"ISI:000223716300068","id":"ISI:000223716300068","bibbaseid":"patnaik-gurevich-bu-kaushik-choi-eom-larbalestier-thermallyactivatedcurrenttransportinmgb2films-2004","role":"author","urls":{},"downloads":0,"html":""},"search_terms":["thermally","activated","current","transport","mgb2","films","patnaik","gurevich","bu","kaushik","choi","eom","larbalestier"],"keywords":[],"authorIDs":[],"dataSources":["zArY7xMz8KdDswhhx"]}