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1、Super?uidityinasymmetricelectron-holesystemsIlyaGrigorenko1andRomanYa.Kezerashvili1,21PhysicsDepartment,NewYorkCityCollegeofTechnology,TheCityUniversityofNewYork,Brooklyn,NY11201,USA2TheGraduateSchoolandUniversityCenter,TheCityUniversityofNewYork,NewYork,NewYork10016,USA(Dated:June24,2014)T
2、hepairinginasystemofelectronsandholesintwospatiallyseparatedparallelplanesisstudiedinthecaseofelectron-holeasymmetrycausedbythedi?erenceinthecarriersmassesandtheirchemicalpotentials.Itisfoundthatthesuper?uidstateispossibleinawiderangeoftheasymmetryparameters,becausetheasymmetriescane?ective
3、lycompensateeachother.Itispredictedthatthesystemmayexhibittwocriticaltemperaturesforsomeasymmetryparameters.Thelowercriticaltemperaturecorrespondstothesuper?uidtransitioninducedbythermal?uctuations.Intheasymmetricsystemacoexistenceofthenormalandsuper?uidstatesispossibleevenatzerotemperature
4、.Super?uidtransitioninsystemsoftwoparallelplanesproton-neutronasymmetrydestroysthesuper?uidstate,withspatiallyseparatedelectronsandholeshasbeenwhenthechemicalpotentialdi?erencebecomescompa-asubjectofinterestformanyyears1–5.Dragcurrentsrabletothemagnitudeoftheorderparameterintheandzerocharge
5、dipolarcurrentwerepredictedinsuchsystem.systems2,3.InspatiallyseparatedsystemofelectronsInthisworkwestudyanelectron-holesystem,whereandholesintwoparallelplanesthechemicalpotentialstheelectronsresideinatwo-dimensionallayerandtheandthemassofthepositiveandnegativecarrierscanbeholesinanothertwo
6、-dimensionallayer,whichcanex-controlledindependently,makingthemagoodtestbedhibitsuper?uidityinaverywiderangeoftheelectron-forstudiesoftheelectron-holeasymmetryonthefor-holemassandchemicalpotentialasymmetry.Weshowmationofthesuper?uidstate.Itiscommonthatinthatthesuper?uidstatesurvivesbecauset
7、heelectron-chemicallydopedsemiconductorsystemsthepositiveandholemassasymmetrycanbee?ectivelycompensatedbynegativechargecarriersmayhaveverydi?erente?ectivethechemicalpotentialdi?erence.Wealsopredictthatmasses.Theratiobetweentheelectronandholemassesatzerot
