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Ayush Gupta
Researcher at University of Maryland, College Park
Publications - 259
Citations - 11643
Ayush Gupta is an academic researcher from University of Maryland, College Park. The author has contributed to research in topics: Thin film & Magnetoresistance. The author has an hindex of 53, co-authored 243 publications receiving 11208 citations. Previous affiliations of Ayush Gupta include University of Maryland, Baltimore & IBM.
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Journal ArticleDOI
Pairing symmetry and flux quantization in a tricrystal superconducting ring of YBa2Cu3O7- delta.
C. C. Tsuei,John R. Kirtley,Cheng-Chung Chi,Lock See Yu-Jahnes,Ayush Gupta,Timothy M. Shaw,Jonathan Z. Sun,Mark B. Ketchen +7 more
TL;DR: Flux quantization in superconducting rings with 0, 2, and 3 grain-boundary Josephson junctions is used to test the pairing symmetry in high-${T}_{c}$ superconductors and results are consistent with $d$-wave pairing symmetry.
Journal ArticleDOI
Grain-boundary effects on the magnetoresistance properties of perovskite manganite films
Ayush Gupta,G. Q. Gong,Gang Xiao,P. R. Duncombe,P. Lecoeur,Philip L. Trouilloud,Y. Y. Wang,Vinayak P. Dravid,Jonathan Z. Sun +8 more
TL;DR: The role of grain boundaries in the magnetoresistance (MR) properties of the manganites has been investigated and the polycrystalline films show large MR over a wide temperature range down to 5 K.
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Determination of the spin polarization of half-metallic CrO(2) by point contact Andreev reflection.
Yi Ji,Gustav J. Strijkers,Fengyuan Yang,Chia-Ling Chien,J. M. Byers,A. Anguelouch,Gang Xiao,Ayush Gupta +7 more
TL;DR: The spin polarization of single-crystal CrO(2) films made by chemical vapor deposition is found to be 0.96 +/- 0.01, which confirms that CrO (2) is a half-metallic ferromagnet, as theoretically predicted.
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Low-field magnetoresistive properties of polycrystalline and epitaxial perovskite manganite films
TL;DR: The low-field magnetoresistance properties of polycrystalline La0.67Sr0.33MnO3 and La 0.67CaO33MnsO3 thin films with different grain sizes have been investigated and compared with epitaxial films as discussed by the authors.
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Observation of large low‐field magnetoresistance in trilayer perpendicular transport devices made using doped manganate perovskites
Jonathan Z. Sun,William J. Gallagher,P. R. Duncombe,L. Krusin-Elbaum,R. A. Altman,Ayush Gupta,Yu Lu,G. Q. Gong,Gang Xiao +8 more
TL;DR: In this paper, a trilayer epitaxial thin film device based on the doped perovskite manganates La-Ca-Mn-O and La-Sr-mn−O was constructed and large resistance changes, up to a factor of 2, can be induced by a moderate applied magnetic field below 200 Oe in these trilayers supporting current-perpendicular-to-plane transport.