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Elena Cimpoiasu
Barium Copper Oxide Superconducting Cable

Elena Cimpoiasu Research and Publications

Research Publications:

[1]      Cimpoiasu E., Stern E., Cheng G., Klie R.F., Munden R., and Reed M.A. “The Effect of Mg-doping on GaN Nanowires”,  Nanotechnology 17, 5735 (2006).
 
[2]       Cimpoiasu E., Stern E., Cheng G., Klie R., Sanders A., Munden R., and Reed M. A. “Electron Mobility Study of GaN and InN  Nanowires”, Brazilian Journal of Physics 36, 824 (2006).
 
[3]      Stern E., Cheng G., Cimpoiasu E. , Klie R. et al.,  “Electrical Characterization of Single Gallium Nitride Nanowires”,  Nanotechnology 16, 2941 (2005).
 
[4]       Sandu, V., Cimpoiasu, E., Li, Shi, Maple, M. B., and Almasan, C. C. "Magnetotransport Properties of Y1-xPrxBa2Cu3O7 Single Crystals", Physica C-Superconductivity and its applications 408, 713 (2004).
 
[5]       Sandu, V., Cimpoiasu, E., Almasan, C. C., Paulikas, A. P., and Veal, B. W., “Charge transport in spin-textured YBa2Cu3O6.25”, Journal of Superconductivity 17, 455 (2004).
 
[6]      Cimpoiasu, E., Tolpygo, S. K., Liu, X., Simonian, N., Polyakov, Yu. A., Lukens, J. E., R. F. Klie, Y. Zhu, and Likharev, K. K.,  “Aluminum Oxide Layers as Potential Components for Crested Tunnel Barriers”, Journal of Applied Physics 96, 1088 (2004).
 
[7]      Sandu, V., Cimpoiasu, E., Li, Shi, Maple, M. B., and Almasan, C. C. "Evidence for vortices in the pseudogap region of Y1-xPrxBa2Cu3O7 from angular magnetoresistivity measurements ", Physical Review Letters 93, 177005 (2004).
 
[8]      Tolpygo, S. K., Cimpoiasu, E., Liu, X., Simonian, N., Polyakov, Yu. A., Lukens, J. E., and Likharev, K. K.,  “Tunneling Properties of Barriers in Nb/Al/AlOx/Nb Junctions”,  IEEE Transactions on  Applied  Superconductivity, 13, 99 (2003).
 
[9]     Sandu, V., Cimpoiasu, E., Almasan, C. C., Paulikas, A. P., and Veal, B. W. "Interplay Between Spin and Crystal Lattices in Antiferromagnetic YBa2Cu3O6.25" Proceedings of Physical Phenomena at High Magnetic Fields-IV " World Scientific Publishing Co., Eds. G. Bobinger, Z. Fisk, L. P. Gorkov, A. Lacerda, J. R. Schrieffer, p. 312 (2002).
 
[10]    V. Sandu, E. Cimpoiasu, C. C. Almasan, A. P. Paulikas, B. W. Veal, Interplay between Spin and Crystal Lattices in Antiferromagnetic YBa2Cu3O6.25, Int. J. Mod. Phys. B 16(20-22), 3208-3211 (2002).
 
[11]    Cimpoiasu, E., Sandu, V., Almasan, C. C., Paulikas, A. P., and Veal, B. W., “Effect of spin ordering on the magnetotransport of YBa2Cu3O6.25”, Physical Review B 65, 144505 (2002).
 
[12]   Cimpoiasu, E., Levin, G. A., Almasan, C. C., Paulikas, A. P., and Veal, B. W. “Magnetotransport Mechanisms  in Strongly Underdoped YBa2Cu3O6+x. Single Crystals” , Physical Review B 64, 104514 (2001).
 
[13]    Levin, G. A., Cimpoiasu, E., Almasan, C. C., Zheng, H., Paulikas, A. P., and Veal, B. W.  “Conductivity and Phase Coherence Length of Layered Cuprates.” , Europhysics Letters 57, 86 (2002)
 
[14]    Cimpoiasu, E., Almasan, C. C., Paulikas, A. P., and Veal, B. W.  “Magnetotransport Properties of  Antiferromagnetic  YBa2Cu3O6.25 Single Crystals.” Physica C  364-365, 399 (2001).
 
[15]    Cimpoiasu, E., Levin, G. A., Almasan, C. C., Zheng, H., and Veal, B. W.  “Magnetoresistivity due to Quantum Interference in Strongly Underdoped YBa2Cu3O6+xSingle Crystals.” Physical Review B 63, 104515 (2001).
 
[16]    Cimpoiasu, E., Levin, G. A., Almasan, C. C., Zheng, H., and Veal, B. W., “Magnetoresistivity of Strongly Underdoped YBa2Cu3O6+x Single Crystals.” Physica C 341-348, 1879-1880 (2000).
 
[17]    Miu, L., Cimpoiasu, E., Stein, T., and Almasan, C. C. “ Plastic Vortex Creep above the Second Magnetization Peak in Bi2Sr2CaCu2O8+x Single Crystals.”  Physica C 334, 1 (2000).
 
[18]    Miu, L., Noji, T., Koike, Y., Cimpoiasu, E., Stein, T., and Almasan, C.C. “Crossover from Elastic to Plastic Vortex Creep across the Second Magnetization Peak of High-Temperature Superconductors.” Physical Review B 62, 15172 (2000).
 
[19]    Almasan, C. C., Cimpoiasu, E, Levin, G. A., Zheng, H., Paulikas, A. P., and Veal, B.W. “Is There a Unified Description of Conductivity in Layered Cuprates?”  Journal of Low Temperature Physics 117, 1307-1311 (1999).
 
[20]    Almasan, C. C., Levin, G. A., Cimpoiasu, E,  Stein, T., DeAndrade, M. C., Maple, M. B., Zheng, Hong., Paulikas, A. P., and Veal, B. W.  “Relationship between Conductivity and Phase Coherence Length in Cuprates.”  International Journal of Modern Physics B 13, 3618-3622  (1999).
 
[21]    Almasan, C. C., Levin G. A., Cimpoiasu, E, Stein, T., Gajewski, D. A., Maple, M. B., Zheng, H., Paulikas, A. P., and Veal, B. W.  “Out-of -plane and             In-plane Conduction in Insulating and Strongly Underdoped Cuprate Superconductors.” International Journal  of Modern Physics B 12, 3203 (1998).
 
[22]    Sandu, V., Popa, S., Jaklovszky, J., and Cimpoiasu, E. “Nonmonotonous Variation of the Superconducting Parameters of Neutron Irradiated Li-Doped YBa2Cu3O7-x.”  Journal  of Superconductivity 11, 245 (1998).
 
[23]    Sandu, V., Jaklovszky, J., Cimpoiasu, E., and Bunescu, M. C. “The Influence of Lithium Halides on the Superconducting Properties of YB2Cu3O7-x “ Journal of Superconductivity 11, 653-661 (1998).
 
[24]    Vasiliu, F., Sandu, V., Nita, P., Popa, S., Cimpoiasu, E., and Bunescu, M. C. “The Role of Radiation Damage Structure and Fine Scale Precipitation in the Pinning Improvement of Thermal Neutron Irradiated Lithium Fluoride-Doped YBa2Cu3O7-x.” Physica C 303, 209-219 (1998).
 
[25]    Sandu, V., Jaklovszky, J., Cimpoiasu, E., and Bunescu, M. C. “The Effect of LiOH Addition to the Superconducting Properties of YBa2Cu3O7-x.” Journal of Superconductivity 10,  231-239 (1997).
 
[26]    Sandu, V., Jaklovszky, J., Cimpoiasu, E., and Bunescu, M. C. “The Effect of Lithium Cuprate on the Structure and Superconducting Properties of YBa2Cu3O7-x” Romanian Journal of Physics  42, 217-227 (1997).
 
[27]    Sandu, V., Aldica, Gh.,  Popa, S., Cimpoiasu, E., Jaklovszky, J., Garlea, I., and Garlea, C. “Transport and Magnetic Properties of Neutron Irradiated Li-Doped YBa2Cu3O7-x” Romanian Journal of Physics  42, 209-215 (1997).
 
[28]    Sandu, V., Popa, S., Cimpoiasu, E., Garlea, C., and Garlea, I. “On the Critical Temperature of the Neutron Irradiated YBa2Cu3O7-x.” Proceedings.  Supplement to Balkan Physics Letters  5, 674-678 (1997).
 
[29]    Sandu, V., Popa, S., and Cimpoiasu, E. “Fluctuation Conductivity in Li-Doped YBa2Cu3O7-x. “ Journal of  Superconductivity 9, 487-492 (1996).
 
[30]    Sandu, V., Popa, S., Cimpoiasu, E., Aldica, Gh., Jaklovszky, J., and Mandache, S. “The Behaviour of Lithium Doped YBa2Cu3O7-x at Low Magnetic Fields” Romanian Journal of Physics  41,  689-702 (1996).
 
[31]    Sandu, V., Aldica, G., Popa, S., Jaklovszky, J.,  Cimpoiasu, E., Garlea G., and Garlea, I. “Neutron Irradiation of Li-Doped YBa2Cu3O7-x.” Journal of Superconductivity  8, 337-340 (1995).
 
[32]    Sandu, V.,  Dragulinescu, D., Bunescu, M. C., Cimpoiasu, E. “Excimer Laser Beam Interaction with a YBa2Cu3O7-x Target” Balkan Physics Letters 3, 55-59 (1995).
 
[33]    Sandu, V., Aldica, Gh.,  Popa, S., and Cimpoiasu, E. “Pinning Enhancement of Lithium Doped YBa2Cu3O7-x “  Romanian Journal of Physics  40, 271-278 (1995).

Abstracts:

[1]     E. Cimpoiasu, E. Stern, G. Cheng, R. Klie, A. Sanders, R.  Munden, and M. Reed “Structure and Electron Transport Properties of  GaN and InN nanowires”, Bulletin of the American Physical Society 51, Baltimore, (2006).
 
[2]     E. Cimpoiasu, E. Stern, G. Cheng, R. Klie, A. Sanders, R.  Munden, and M. Reed “Electron mobility study of hot-wall CVD GaN and InN nanowires”, CLACSA XII, Angra dos Reis, Brasil, (2005).
 
[3]     E. Stern, G. Cheng, E. Cimpoiasu, R. Klie, J. Klemic, I. Kretzschmar, J. Hyland, A. Sanders, R.  Munden, and M. Reed “Electrical Characterization of Individual GaN Nanowires”, Device Research Conference, Santa Barbara, California (2005).
 
[4]     E. Stern, E. Broomfield, D. Turner-Evans, G. Cheng, E. Cimpoiasu, S. Guthrie, C. Li, James Klemic, A. Sanders, R. Munden, C. Zhou and M. Reed, “Elucidating the Importance of Growth Parameters and Fabrication Methods by Electrical Characterization of Individual GaN and In2O3 Nanowires”, MRS Meeting, Boston (2005).
 
[5]     Guosheng Cheng, Elena Cimpoiasu, Eric Stern, Ryan Munden, Nilay Pradhan, Aric Sanders, and Mark A Reed “Catalyst-free synthesis routine to InN nanowires”, , IEEE Conference on Nanotechnology, Nagoya, Japan (2005).
 
[6]     Cimpoiasu, E., Liu X., DiPasquale M., Suan Y., Chen, W., Lukens, J. E., and Rafailovich M.,” Electron Transport through Gold Nanocrystal Arrays”, Bulletin of the American Physical Society 49 (2004).
 
[7]     Cimpoiasu, E., Tolpygo, S. K., Liu, X., Simonian, N., Polyakov, Yu. A., Lukens, J. E., and Likharev, K. K., ” Tunneling through Rapid-thermally-annealed Aluminum-oxide layers”, Bulletin of the American Physical Society49 (2004). 
 
[8]     Cimpoiasu, E., Tolpygo, S. K., Liu, X., Simonian, N., Polyakov, Yu. A., Lukens, J. E., and Likharev, K. K.,  “Aluminum Oxide Layers as Potential Components for Crested Tunnel Barriers”
 
[9]     Cimpoiasu, E.,  Tolpygo, S. K., Liu, X., Simonian, N., Polyakov, Yu. A., Lukens, J. E., and Likharev, K. K.,  ”Effect of Annealing on Thermally and Plasma-Grown Aluminum Oxide Tunnel Barriers”, Bulletin of the American Physical Society 48,  583 (2003).
 
[10]   Sandu, V., Cimpoiasu, E., Almasan, C. C., Paulikas, A. P.  and Veal, B. W., “Mechanisms of Magnetotransport in Antiferromagnetic YBa2Cu3O6.25 Single Crystals”, Bulletin of the American Physical Society47 (2002).
 
[11]   Cimpoiasu, E., Almasan, C. C., Paulikas, A. P., and  Veal, B. W. “Magnetoresistivity Studies of Antiferromagnetic YBa2Cu3O6.25 Single Crystals.” Abstract Book, 3rd International Conference on New Theories, Discoveries and Applications of Superconductors and Related Materials Materials,  Hawaii (2001).
 
[12]   Almasan, C. C., Cimpoiasu, E., Levin, G. A., Zheng, H., and Veal, B. W. “Incoherent c-axis Charge Transport Inferred from Quantum Interference Effects in Strongly Underdoped YBa2Cu3O6+x Single Crystals.” Bulletin of the American Physical Society 46,  410 (2001).
 
[13]   Cimpoiasu, E., Almasan, C. C., Li Shi, Kim, J., and Maple, M. B. “Studies of Orbital In-Plane Magnetoconductivity of Y1-yPryBa2Cu3O7-d  Single Crystals.” Bulletin of the American Physical Society  46, 411 (2001).
 
[14]   Cimpoiasu, E., Levin, G. A., Almasan, C. C., Zheng, H., and Veal, B. W. “Magnetoresistivity of Strongly Underdoped YBa2Cu3O6+x Single Crystals.”  Abstract Book, 6th International Conference on Materials and Mechanisms of  Superconductivity and High Temperature Superconductors  (2000).
 
[15]   Cimpoiasu, E., Levin, G. A., Almasan, C. C., Zheng, H., Paulikas, A.P., and Veal, B. W. “Normal State Conductivities of YBa2Cu3Ox Crystals near Metal-Insulator Transition.”  Bulletin of the American Physical Society 44, 1701 (1999).
 
[16]   Miu, L., Cimpoiasu, E., and Almasan, C. C.  “First-order Phase Transition at the Second Magnetization Peak in Bi2Sr2CaCu2O8+x Single Crystals.” Bulletin of the American Physical Society 44, 1375 (1999).
 
[17]   Almasan, C. C., Levin, G. A., Cimpoiasu, E, Stein, T.,  Gajewski, D. A.,  Maple, M. B., Zheng, H., Paulikas, A.P., and Veal, B. W. “Two Dimensional Localization and  Superconductor - Insulator Transition in  Cuprates”  Bulletin of the American Physical Society 43, 410 (1998).
 
[18]   Almasan, C.C., Levin, G.A., Cimpoiasu E,  Stein, T.,  Gajewski, D.A., Maple, M.B., Zheng  H., Paulikas  A.P., and Veal, B.W. “Out-of -plane and In-plane Conduction in Insulating and Strongly Underdoped Cuprate Superconductors.” Abstract Book, First International Conference on New Discoveries and Applications of Superconductors and Related materials, February  19-24, 4, (1998).
 
[19]   Cimpoiasu, E., Miu, L., Almasan, C. C., Trawick, M. L., and Garland, J. C. “Vanishing of the Irreversibility Line of Bi2Sr2CaCu2O8+x Single Crystals below the Mean-Field Critical Temperature.” Bulletin of the American Physical  Society 43, 804 (1998).

Presentations:

[1]    “Structure and Electron Transport Properties of GaN and InN nanowires”, APS March Meeting  (2006).

[2]     “Electron mobility study of hot-wall CVD GaN and InN nanowires”, CLACSA XII, Angra dos Reis, Brasil (2005).
 
[3].    ”Effect of Annealing on Thermally and Plasma-Grown Aluminum Oxide Tunnel Barriers”, APS March Meeting,  Austin, Tx, 2003.
 
[4]     ”Aluminum Oxide Layers as Potential Components for Crested Tunnel Barriers”, Electronic Materials Conference, Salt Lake City, UT, 2003.
 
[5]    “Studies of Orbital In-Plane Magnetoconductivity of Y1-yPryBa2Cu3O7-d  Single Crystals.” APS March Meeting,  Seattle, WA, 2001.
 
[6]     “Incoherent c-axis Charge Transport Inferred from Quantum Interference Effects in Strongly Underdoped YBa2Cu3O6+x Single Crystals”, APS March Meeting,  Seattle, WA, 2001.
 
[7]    “Phase Diagram and Low Temperature Annealing Effects on  YBa2Cu3O6+x Single Crystals.” 15th Annual Research Colloquium  at Kent State University, Kent, OH, 2000.
 
[8]    “Magnetotransport Properties of Underdoped YBa2Cu3Ox  and Y1-yPryBa2Cu3O7-d  Single Crystals”, Gordon Research Conference, Ventura, CA, 2000.
 
[9]     “Magnetoresistivity of Strongly Underdoped  YBa2Cu3Ox Single  Crystals.” 6th International Conference on Materials and Mechanisms of Superconductivity and High Temperature Superconductors, Houston, TX, 2000.
 
[10]   “Normal State Conductivities of YBa2Cu3Ox Crystals near Metal-Insulator Transition.” APS March Meeting, Atlanta, GA, 1999.
 
[11]   “Vanishing of the Irreversibility Line of Bi2Sr2CaCu2O8+x Single Crystals below the Mean-Field Critical Temperature.” APS March Meeting, Los  Angeles, CA, 1998.
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