001047080 001__ 1047080
001047080 005__ 20251020202101.0
001047080 037__ $$aFZJ-2025-04106
001047080 041__ $$aEnglish
001047080 1001_ $$0P:(DE-Juel1)128634$$aSchäpers, Thomas$$b0$$ufzj
001047080 1112_ $$cKöln$$d2025-10-08 - 2025-10-08$$wGermany
001047080 245__ $$aQuantum Transport in GaAs/InAs Core/Shell Nanowire Based Structures$$f2025-10-08 - 
001047080 260__ $$c2025
001047080 3367_ $$033$$2EndNote$$aConference Paper
001047080 3367_ $$2DataCite$$aOther
001047080 3367_ $$2BibTeX$$aINPROCEEDINGS
001047080 3367_ $$2ORCID$$aLECTURE_SPEECH
001047080 3367_ $$0PUB:(DE-HGF)31$$2PUB:(DE-HGF)$$aTalk (non-conference)$$btalk$$mtalk$$s1760956370_5185$$xInvited
001047080 3367_ $$2DINI$$aOther
001047080 500__ $$aDFG Project: EXC 2004/1–390534769
001047080 502__ $$cUniversität zu Köln
001047080 520__ $$aQubit systems based on high quality hybrid superconducting quantum devices are often realized by using semiconductor nanowires. In core/shell GaAs/InAs nanowires, containing a tubular conductor in the InAs shell wrapped around an insulating GaAs core, the strong confinement near the surface ensures good coupling to a superconductor. We present magnetotransport measurements on zincblende phase-pure GaAs/InAs core/shell nanowires, where the reduced disorder compared to polycrystalline nanowires is expected to result in improved transport properties. When an axial magnetic field is penetrating the tubular conductor, h/e-periodic Aharonov-Bohm type oscillations are observed in the magnetoconductance [1]. In addition, phase-rigid h/2e-periodic oscillations corresponding to Altshuler-Aronov-Spivak oscillations are observed. By temperature-dependent measurements, we identify a quasi-ballistic transport regime with few scattering centers in the conducting shell, which nevertheless leads to an Altshuler-Aronov-Spivak correction. In addition, Josephson junctions comprising a core/shell GaAs/InAs nanowire as a weak link were investigated [2,3]. Here, we observed an oscillation of the switching current in an axial magnetic field with a period of h/2e.  Work done in collaboration with: F. Basaric, A. Pawlis, V. Brajovic, K. Moors, W. Schaarman, A. Manolescu, R. Deacon, K. Ishibashi, P. Zellekens, R. Juluri, A. M. Sanchez, J. H. Bae, H. Lüth, D. Grützmacher, M. D. Randle, P. Perla, M. I. Lepsa, G. Behner, E. Zimmermann, B. Bennemann, C. Krause[1] Farah Basaric, Vladan Brajovic, Gerrit Behner, Kristof Moors, William Schaarman, Andrei Manolescu, Raghavendra Juluri, Ana M. Sanchez, Jin Hee Bae, Hans Lüth, Detlev Grützmacher, Alexander Pawlis, Thomas Schäpers, Aharonov-Bohm and Altshuler-Aronov-Spivak oscillations in the quasiballistic regime in phase-pure GaAs/InAs core/shell nanowires, Phys. Rev. B. 112, 075301 (2025). [2] Patrick Zellekens, Russell Deacon, Pujitha Perla, Detlev Grützmacher, Mihail Ion Lepsa, Thomas Schäpers, Koji Ishibashi, Microwave spectroscopy of Andreev states in InAs nanowire-based hybrid junctions using a flip-chip layout, Communications Physics 5, 267 (2022).[3] Patrick Zellekens, Russell S. Deacon, Farah Basaric, Raghavendra Juluri, Michael D Randle, Benjamin Bennemann, Christoph Krause, Erik Zimmermann, Ana M. Sanchez, Detlev Grützmacher, Alexander Pawlis, Koji Ishibashi, Thomas Schäpers, Flux-periodic supercurrent oscillations in an Aharonov-Bohm-type nanowire Josephson junction,  Communications Physics 8, 363 (2025).
001047080 536__ $$0G:(DE-HGF)POF4-5222$$a5222 - Exploratory Qubits (POF4-522)$$cPOF4-522$$fPOF IV$$x0
001047080 65027 $$0V:(DE-MLZ)SciArea-120$$2V:(DE-HGF)$$aCondensed Matter Physics$$x0
001047080 65017 $$0V:(DE-MLZ)GC-120-2016$$2V:(DE-HGF)$$aInformation and Communication$$x0
001047080 909CO $$ooai:juser.fz-juelich.de:1047080$$pVDB
001047080 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)128634$$aForschungszentrum Jülich$$b0$$kFZJ
001047080 9131_ $$0G:(DE-HGF)POF4-522$$1G:(DE-HGF)POF4-520$$2G:(DE-HGF)POF4-500$$3G:(DE-HGF)POF4$$4G:(DE-HGF)POF$$9G:(DE-HGF)POF4-5222$$aDE-HGF$$bKey Technologies$$lNatural, Artificial and Cognitive Information Processing$$vQuantum Computing$$x0
001047080 9141_ $$y2025
001047080 920__ $$lyes
001047080 9201_ $$0I:(DE-Juel1)PGI-9-20110106$$kPGI-9$$lHalbleiter-Nanoelektronik$$x0
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001047080 980__ $$aI:(DE-Juel1)PGI-9-20110106
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