Publications List:

1. P. Andrei and L. Oniciuc, “Redesign and optimization of semiconductor devices and circuits” in MOSFETs: Properties, Preparations and Performance, Nova Publishers, to appear in 2008.
2. I. D. Mayergoyz and P. Andrei, “Analysis of fluctuations in nanoscale semiconductor devices”, in Handbook of Semiconductor Nanostructures and Devices, editors A. A. Balandin and K. L. Wang, American Scientific Publishers, Los Angeles, 2006, pp. 257-324. ISBN 158883-078-0.
3. P. Andrei, Al. Stancu, and O. Caltun, “Modeling and simulation of electrical circuits with hysteretic inductors by using a dynamic Preisach model” in Preisach Memorial Book-Hysteresis Models in Mathematics, Physics and Engineering, editors Amalia Ivanyi and Akadémiai Kiadó, Budapest, 2005, pp. 187-198, ISBN 9630582643.

PUBLICATIONS IN REFERRED JOURNALS

1. P. Andrei, and A. Adedoyin “Noniterative parameter identification technique for the energetic model of hysteresis,” J. Appl. Phys, vol. 105, Art. No. 07D523, 2009.
2. L. Oniciuc and P. Andrei, “Sensitivity of static noise margins to random doping variations in 6T SRAM cells,” Solid-State Electron., vol. 52, pp. 1542-1549, Oct. 2008.
3. P. Andrei and A. Adedoyin, “Phenomenological vector models of hysteresis driven by random fluctuation fields,” J. App. Phys., vol. 103, Art. No. 07D913, Apr. 2008.
4. P. Andrei and Al. Stancu, “Dynamic models of hysteresis for structured media,” J. Optoelectronics and Advance Materials, vol. 9, pp. 3837-3842, Dec. 2007.
5. P. Andrei, L. L. Fields, J. P. Zheng, Y. Cheng, P. Xiong, “Modeling and simulation of single nanobelt SnO2 gas sensors with FET structure,” Sensors and Actuators B, vol. 128, pp. 226-234, Dec. 2007.
6. A. Adedoyin and P. Andrei, “3-D magnetostatic computations using the fast multipole method,” IEEE Trans. Magn., vol. 316, pp. E309-E312, Sep. 2007.
7. P. Andrei, L. Oniciuc, Al. Stancu, and L. Stoleriu, “Identification techniques for phenomenological models of hysteresis based on the conjugate gradient method,” J. Magn. Magn. Mat., vol. 316, pp. E309-E312, Sep. 2007.
8. A. Adedoyin and P. Andrei, “A three-dimensional magnetic field and energy computation technique based on the Fast Multipole Method,” J. Optoelectronics and Advance Materials, vol. 9(4), pp. 1133-1136, Apr. 2007.
9. P. Andrei, A. Stancu, H. Hauser, and P. Fulmek, “Temperature, stress, and rate dependent numerical implementation of magnetization processes in phenomenological models,” J. Optoelectronics and Advance Materials, vol. 9(4), pp. 1137-1139, Apr. 2007.
10. A.Stancu, L. Stoleriu, and P. Andrei, “Vectorial Preisach-type model designed for parallel computing.” J. Magn. Magn. Mat., vol. 316, pp. E309-E312, Sep. 2007.
11. M. Huang, I. Mayergoyz, and P. Andrei, “General adjoint approach to the physics-based noise modeling of semiconductor devices through Langevin sources,” J. App. Phys., vol. 101, Art. No. 014508, Jan. 2007.
12. P. Andrei, “Calibration of the Density-Gradient model by using the multidimensional effective-mass Schrödinger equation,” J. Computational Electronics, vol. 5, pp. 315-318, 2006.
13. P. Andrei, Al. Stancu, and A. Adedoyin, “Modeling of viscosity phenomena in models of hysteresis with local memory,” J. Optoelectronics and Advance Materials, vol. 8(3), pp. 988-990, Jun. 2006.
14. P. Andrei and Al. Stancu, “Monte Carlo analysis of magnetic aftereffect phenomena,” J. Appl. Phys., vol. 99(8), Art. No. 08D701, Apr. 2006.
15. Al. Stancu, P. Andrei and L. Stoleriu “Magnetic characterization of samples using first- and second-order reversal curve diagrams,” J. Appl. Phys. 99(8): Art. No. 08D702, Apr. 2006.
16. Al. Stancu and P. Andrei and “Characterization of static hysteresis models by using first-order reversal curves diagram method,” Physica B., vol. 372, pp. 72-75, 2006.
17. P. Andrei, O. Caltun, and Al. Stancu, “Rate dependence of first-order reversal curves by using a dynamic Preisach model of hysteresis.” Physica B, vol. 372, pp. 265-268, 2006.
18. P. Andrei and I.D. Mayergoyz, “Random doping fluctuations of small-signal parameters in nanoscale semiconductor devices,” J. Computational Electronics, vol. 3, pp. 211-214, 2004.
19. P. Andrei and I. D. Mayergoyz, “Analysis of fluctuations in semiconductor devices through self-consistent Poisson- Schrödinger computations,” J. Appl. Phys., vol. 96, pp. 2071-2079, Aug. 2004.
20. P. Andrei and I. D. Mayergoyz, “Quantum mechanical effects on random oxide thickness and doping fluctuations in ultra small semiconductor devices,” J. Appl. Phys., vol. 94, pp. 7163-7172, Dec. 2003.
21. P. Andrei and I. D. Mayergoyz, “Sensitivity of frequency characteristics of semiconductor devices to random doping fluctuations,” Solid-State Electron., vol. 48, pp. 133-141, Jan. 2004.
22. P. Andrei and I.D. Mayergoyz, “Random doping-induced fluctuations of subthreshold characteristics in MOSFET devices,” Solid-State Electron., vol. 47, pp. 2055-2061, Nov. 2003.
23. P. Andrei, M. Dimian, C. Krafft, I. D. Mayergoyz, D. I. Mircea, and R. Rojas, “Anisotropy characterization of garnet films by using VSM measurements,” J. Appl. Phys., vol. 93, no. 10, pp. 7065-7067, May 2003.
24. I. D. Mayergoyz, P. Andrei, and M. Dimian, “Nonlinear magnetostatic calculations based on fast multipole method,” IEEE Trans. Magn., vol. 39, no. 3, pp. 1103-1106, May, 2003.
25. I. D. Mayergoyz and P. Andrei, “Preisach modeling of clockwise hysteresis and its application to front propagation problems,” J. Appl. Phys., vol. 91, no. 10, pp. 7645-7647, May 2002.
26. I. D. Mayergoyz, P. Andrei, and B. Hakim, “A new time-domain approach to the analysis of scattering problems,” IEEE Trans. Magn., vol. 38, no. 2, pp. 327-332, March 2002.
27. P. Andrei and I. D. Mayergoyz, “Analysis of random dopant-induced fluctuations of frequency characteristics of semiconductor devices,” J. Appl. Phys., vol. 93, no. 8, pp. 4646-4652, April 2003.
28. I. D. Mayergoyz and P. Andrei, “Numerical analysis of random dopant-induced effects in semiconductor devices,” Int. J. High Speed Electronics and Systems, vol. 12, pp. 551-562, June 2002.
29. I. D. Mayergoyz, C. Tse, C. Krafft, D. I. Mircea, and P. Andrei, “Extraction of the response function of GMR head for spin-stand imaging,” IEEE Trans. Magn., vol. 38, no. 5, pp. 2453-2455, Sept. 2002.
30. C. Tse, D. I. Mircea, I. D. Mayergoyz, and P. Andrei, “Spatial and vectorial characterization of thermal relaxation using the spin-stand imaging technique,” J. Appl. Phys., vol. 91, no. 10, pp. 8846-8848, May 2002.
31. I. D. Mayergoyz and P. Andrei, “Statistical analysis of semiconductor devices,” J. Appl. Phys., vol. 90, no. 6, pp. 3019-3029, Sept. 2001.
32. I. D. Mayergoyz, P. Andrei, and I. Filipovich, “Analysis of random dopant-induced effects through numerical solution of randomly perturbed nonlinear Poisson equation,” IEEE Trans. Magn., vol. 37, no. 5, pp. 3155-3158, Sept. 2001.
33. O. Caltun, P. Andrei, and Al. Stancu, “Modeling the temperature dependence of magnetization processes in soft ferrite cores,” Int. J. Appl. Electrom., vol. 13, no. 4, pp. 335-338, 2001.
34. R. Grossinger, H. , L. Stoleriu, and P. Andrei, “Hysteresis modeling of anisotropic barium ferrite,” IEEE Trans. Magn., vol. 36, no. 5, pp. 3357-3359, Sept. 2000.
35. P. Andrei and Al. Stancu, “Identification method analysis for the scalar generalized moving Preisach model using major hysteresis loops,” IEEE Trans. Magn., vol. 36, no. 4, pp. 1982-1989, July 2000.
36. P. Andrei and Al. Stancu, “Hysteresis in particulate recording media. Experiment and simulation with Preisach and Jiles-Atherton models,” J. Magn. Mag. Mat., vol. 206, pp. 160-164, 1999.
37. P. Andrei, O. Caltun, and Al. Stancu, “Differential phenomenological models for the magnetization processes in soft MnZn ferrites,” IEEE Trans. Magn., vol. 34, no. 1, pp. 231-241, Jan. 1998.
38. P. Andrei, Al. Stancu, and O. Caltun, “Differential Preisach model for the description of dynamic magnetization processes,” J. Appl. Phys., vol. 83, no. 11, pp. 6359-6361, June 1998.
39. P. Andrei, O. Caltun, C, Papusoi, Al. Stancu, and M. Feder, “Losses and magnetic properties of Bi2O3 doped MnZn ferrites,” J. Magn. Mag. Mat., vol. 196-197, pp. 362-364, 1999.

PUBLICATIONS IN CONFERENCE PROCEEDINGS

1. P. Andrei and A. Adedoyin, “RDF analysis of small-signal equivalent circuit parameters in MOSFET devices.” Presented at the 2007 International Conference on Simulation of Semiconductor Processes and Devices, Vienna, Austria, September 25-27, 2007.
2. P. Andrei, Al. Stancu, and O. Caltun, “Magnetization processes data acquisition system.” Presented at the 2006 Magnetic Measurements, Závažná Poruba, Slovakia, September 21-23, 2006.
3. P. Andrei, “On the analysis of random doping induced fluctuations in ultra small semiconductor devices by linearization.” Presented at the 2006 International Conference on Simulation of Semiconductor Processes and Devices, Monterey, CA, September 6-8, 2006.
4. Al. Stancu, L. Stoleriu, and P. Andrei, “Parallel implementation of a new vector Preisach-type model.” Presented at the MmdE-2006 and IEEE Romanian Magnetic Society Chapter Conference, Bucharest, Romania, June 15-17, 2006.
5. L. Oniciuc and P. Andrei, “Two- and three-dimensional energetic models of hysteresis for anisotropic materials.” Presentation at the MmdE-2006 and IEEE Romanian Magnetic Society Chapter Conference, Bucharest, Romania, June 15-17, 2006.
6. P. Andrei, “Parameter identification procedure for the Density-Gradient model,” Proceedings of the 2006 APS March Meeting. Presented at The 2006 American Physical Society March Meeting, Baltimore, MD, March 13-17, 2006.
7. P. Andrei, “Simulation of magnetic hysteresis in electronic circuits containing ferromagnetic or ferritic core inductors,” WSEAS Trans. On Circ. and Syst., vol. 5, pp. 369-376, April 2006. Presented at The 5th WSEAS International Conference in Microelectronics, Nanoelectronics, and Optoelectronics, Prague, Czech Republic, March 12-14, 2006.
8. P. Andrei, “Effects induced by oxide thickness variations in nanoscale MOSFET devices,” WSEAS Trans. On Electronics, vol. 4, pp. 135-142, April 2006. Presented at The 5th WSEAS International Conference in Microelectronics, Nanoelectronics, and Optoelectronics, Prague, Czech Republic, March 12-14, 2006.
9. P. Andrei, “Random doping and oxide roughness induced fluctuations in nanoscale semiconductor devices.” Proceedings of the 2006 APS March Meeting. Presented at The 2006 American Physical Society March Meeting, Baltimore, MD, March 13-17, 2006.
10. L. Oniciuc, P. Andrei, “Sensitivity of abrupt p-n junctions to random doping fluctuations,” WSEAS Trans. On Circ. and Syst., vol. 3, pp. 1842-1848, Dec. 2005. Presented at The 4th WSEAS International Conference on Electronics, Control and Signal Processing, Miami, FL, USA, November 17-19, 2005.
11. P. Andrei, “Calibration of the Density-Gradient model by using the effective-mass Schrödinger equation,” WSEAS Trans. On Electronics, vol. 3, pp. 20-27, Jan. 2006. Presented at The 4th WSEAS International Conference on Electronics, Control and Signal Processing, Miami, FL, USA, November 17-19, 2005
12. P. Andrei, “Magnetic aftereffect analysis by using Monte Carlo methods.” Presented at The Fifth IMACS (International Association for Mathematics and Computers in Simulation) Seminar on Monte Carlo Methods, Tallahassee, FL, USA, May 16-20, 2005.
13. P. Andrei, “Comparison between the Monte Carlo and the linearization methods for the analysis of random doping induced fluctuations in nanoscale semiconductor structures.” Presented at The Fifth IMACS (International Association for Mathematics and Computers in Simulation) Seminar on Monte Carlo Methods, Tallahassee, FL, USA, May 16-20 2005.
14. P. Andrei and I.D. Mayergoyz, “Analysis of random doping and random oxide thickness induced fluctuations in nanscale semiconductor devices through Poisson-Schrödinger computations,” Simulation of Semiconductor Processes and Devices, Springer-Wien-New York, eds. Gerhard Wachutka and Gabriele Schrag, pp. 227-330, 2004. Presented at The 2004 IEEE International Conference on Simulation of Semiconductor Processes and Devices, Munich, Germany, September 2-4, 2004.
15. P. Andrei and I.D. Mayergoyz, “Analysis of fluctuations in ultra-small semiconductor devices,” Proceedings of SISPAD 2003, IEEE Electron Society, pp. 95-98, 2003. Presented at The 2003 IEEE International Conference on Simulation of Semiconductor Processes and Devices, Boston, MA, September 3-5, 2003
16. P. Andrei, L. Laurentiu, and H. Hauser, “Hysteresis model identification for particulate media,” J. Appl. Phys., vol. 87, no. 9, pp. 6555-6557, May 2000. Presented at The 44th Annual Conference on Magnetism and Magnetic Materials, San Jose, CA, USA, Nov. 15-18, 1999.
17. P. Andrei, Al. Stancu, and O. Caltun, “Reversible and irreversible magnetisation processes in phenomenological models,” ISEM’99, IOS Press, pp. 129-132, 1999. Presented at The 9th International Symposium on Non-Linear Electromagnetic Systems, Pavia, Italy, 10-12 May 1999.
18. O. Caltun, Al. Stancu, C. Papusoi, and P. Andrei, “On the distortions in RL circuits with fine-grained MnZn ferrite cores,” Proceedings of ISEM’99, IOS Press, pp. 31-34, 1999. Presented at The 9th International Symposium on Non-Linear Electromagnetic Systems, Pavia, Italy, 10-12 May 1999.
19. O. Caltun, C. Papusoi, Al. Stancu, and P. Andrei, “ME sensor based on electron diffusion in low electric resistive ferrites,” Proceedings of ISEM’99, IOS Press, pp. 637-640, 1999. Presented at The 9th International Symposium on Non-Linear Electromagnetic Systems, Pavia, Italy, 10-12 May 1999.
20. Al. Stancu, P. Andrei, and O. Caltun, “Simulation of non-linear inductor circuits in phenomenological models,” Non-linear electromagnetic systems - Advanced techniques and mathematical methods, IOS Press, pp. 503-505, 1998. Presented at The 8th International Symposium on Non-Linear Electromagnetic Systems, Braunschweig, Germany, May 12-14, 1997.
21. O. Caltun, Leonard Spinu, P. Andrei, and Al. Stancu, “Fundamental frequency influence on harmonic content of circular Barkhausen effect induced signal,” Non-linear electromagnetic systems - Advanced techniques and mathematical methods, IOS Press, pp. 547-549, 1998. Presented at The 8th International Symposium on Non-Linear Electromagnetic Systems, Braunschweig, Germany, May 12-14, 1997.
22. O. Caltun, C. Papusoi, Al. Stancu, P. Andrei, and W. Kappel, “Magnetic cores diagnosis,” Non-linear electromagnetic systems - Advanced techniques and mathematical methods, IOS Press, pp. 594-596, 1998. Presented at The 8th International Symposium on Non-Linear Electromagnetic Systems, Braunschweig, Germany, May 12-14, 1997.
23. Al. Stancu, O. Caltun, and P. Andrei, “Models of hysteresis in magnetic cores,” J. Phys. IV, vol. 7, pp. 209-210, 1997. Presented at The 7th International Conference on Ferrite, Bordeaux, France, September 3-6, 1996.

OTHER PAPERS AND CONFERENCE PROCEEDINGS

1. O. Caltun, C. Papusoi, P. Andrei, W. Kappel, Al. Stancu, and D. Hatmanu, "The influence of the frequency on the distortion in a RL circuit with ferrite core," University Sci. Annuals, Romania, vol. 43-44, no. 2, pp. 13-18, 1997-1998.
2. O. Caltun, M. Feder, P. Andrei, and Al. Stancu, "Relations between microstructure and magnetic properties of Mn-Zn ferrites for power application," University Sci. Annuals, Romania, vol. 43-44, no. 2, pp. 33-38, 1997-1998.
3. O. Caltun, P. Andrei, and Al. Stancu, "Initial permeability, hysteresis and total losses measurements," Proc. of MMDE'01, Bucharest, Romania, pp. 99-102, 2001.
4. P. Andrei, Al. Stancu, and O. Caltun, "Reversible and irreversible magnetisation processes in phenomenological models," Proc. of ISEM'99 (International Symposium on Non-Linear Electromagnetic Systems), IOS Press, pp. 129-132, 1999.
5. O. Caltun, C. Papusoi, Al. Stancu, and P. Andrei, "Spectral analysis of the induced signal in RL circuits with ferrite cores," Proc. of MMDE'99, Bucharest, Romania, pp. 77-84, 1999.
6. P. Andrei, L. Stoleriu, Al. Stancu, and H. Hauser, "Hysteresis simulation for particle assemblies using the Preisach and the energetic models," Proc. of CCMP'99, Timisoara, Romania, P2-55, pp. 97, 1999.
7. P. Andrei, O. Caltun, and Al. Stancu, "On the modeling of temperature dependent magnetization processes in soft ferrite," Proc. of CCMP'99, Timisoara, Romania, P2-56, pp. 98, 1999.
8. O. Caltun, C. Papusoi, Al. Stancu, and P. Andrei, "Correlation between the magnetization processes in soft ferrite cores and the amplitude spectra of induced signals," Proc. of CCMP'99, Timisoara, Romania, O1-5, pp. 16, 1999.
9. O. Caltun, M. Tasca, M. Feder, Al. Stancu, and P. Andrei, "The influence of milling time on the microstructure and on the magnetic properties of some Mn-Zn ferrites," Proc. of CCMP'99, Timisoara, Romania, P1-65, pp. 60, 1999.
10. O. Caltun, P. Andrei, Al. Stancu, and C. Papusoi, "Modeling of non-linear RL circuits", Proc. of the International Symposium on Signal Circuits and Systems, Iasi, Romania, pp. 61-63, 1997.

DISSERTATIONS

Ph.D. Dissertation

"Analysis of fluctuations in semiconductor devices", University of Maryland, College Park, USA, pp.1-180, 2004. Advisor: Professor I. D. Mayergoyz,

M.S. Dissertations:

"Magnetization processes in micro- and nano-particule systems," Alexandru Ioan Cuza University, Iasi, Romania, pp. 1-101, 1999. Advisor: Professor Alexandru Stancu. "Energetic model of magnetic hysteresis. Exact calculations and identification methods," Technical University of Vienna, Austria, pp. 1-78, 1999. Advisor: Professor Hans Hauser.

B.S. Dissertations:

"Phenomenological models for the study of magnetization processes of ferromagnetic and ferritic materials," Alexandru Ioan Cuza University, Iasi, Romania, pp. 1-250, 1999. Advisor: Professor Alexandru Stancu. "Proprietes physiques des couches minces magnetiques: une revue theorique et une etude experimentale d'une couche mince de permalloy" (in French), Paris-Sud University, Paris, France, pp. 1-72, 1997. Advisor: Professor Herve Hurdequint.