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Leader in Integrated ICT Hardware & Systems

Philip Murphy -

  • Photonics
Felipe Murphy-Armando is Senior Researcher and leads the Quantum Modelling Team in the Materials Theory Group in Tyndall National Institute, UCC.


I am interested on the effects of electron scattering on the transport, thermoelectric and optical properties of materials.

Felipe's research interests are

  • The calculation of the resistance, piezoresistance and thermoelectricity in materials from first principles,
  • The effect of strain on the electron-phonon and alloy scattering of alloys from first principles,
  • Understanding the heating processes in nanowires,
  • Time dependent energy and momentum relaxation in excited materials,
  • Photoluminescence in Defect and Strain Engineered materials, such as Ge/InGaAs and Ge Defect Engineered Quantum Dots (Ge DEQDs).


Research Grants

Funder Start Date End Date Title Role
Science Foundation of Ireland 31-MAY-20 31-MAY-24 Orbitron: Spin, charge and light polarisation control and characterisation of CMOS compatible light sources - Leaner Future Networks. Principal Investigator

Research Collaborators

Company Country Name
Tyndall National Insitute IRELAND Ray Duffy
Tyndall National Insitute IRELAND Tomasz Ochalski

Peer Reviewed Journals

YearJournalPublication
2019Physical Review LettersUltrafast Relaxation of Symmetry-Breaking Photo-Induced Atomic Forces
O'Mahony S.;Murphy-Armando F.;Murray É.;Querales-Flores J.;Savić I.;Fahy S. (2019) Ultrafast Relaxation of Symmetry-Breaking Photo-Induced Atomic Forces. : . [Details]
2019Journal of Applied PhysicsEnhancement of the electronic thermoelectric properties of bulk strained silicon-germanium alloys using the scattering relaxation times from first-principles calculations
Murphy-Armando, F (2019) Enhancement of the electronic thermoelectric properties of bulk strained silicon-germanium alloys using the scattering relaxation times from first-principles calculations. : . [Details]
2018Physical Review BDirect and indirect band gaps in Ge under biaxial tensile strain investigated by photoluminescence and photoreflectance studies
Saladukha, Dzianis; Clavel, M. B.; Murphy-Armando, Felipe; Greene-Diniz, Gabriel; Grüning, M.; Hudait, Mantu; Ochalski, Tomasz J. (2018) Direct and indirect band gaps in Ge under biaxial tensile strain investigated by photoluminescence and photoreflectance studies. : . [Details]
2018Physical Review BAcoustic deformation potentials of n-type PbTe from first principles
Murphy, AR;Murphy-Armando, F;Fahy, S;Savic, I (2018) Acoustic deformation potentials of n-type PbTe from first principles. : AMER PHYSICAL SOC. [Details]
2015ACS applied materials & interfacesHeterogeneously-Grown Tunable Tensile Strained Germanium on Silicon for Photonic Devices
Michael Clavel, Dzianis Saladukha, Patrick S Goley, Tomasz J Ochalski, Felipe Murphy-Armando, Robert J Bodnar, Mantu K Hudait (2015) Heterogeneously-Grown Tunable Tensile Strained Germanium on Silicon for Photonic Devices. : . [Details]
2014IEEE Transactions On Electron DevicesOptimized Laser Thermal Annealing on Germanium for High Dopant Activation and Low Leakage Current
Shayesteh, M,O' Connell, D,Gity, F,Murphy-Armando, P,Yu, R,Huet, K,Toque-Tresonne, I,Cristiano, F,Boninelli, S,Henrichsen, HH,Nielsen, PF,Petersen, DH,Duffy, R (2014) Optimized Laser Thermal Annealing on Germanium for High Dopant Activation and Low Leakage Current. : . [Details]
2013Physical Review LettersOptical Emission of a Strained Direct-Band-Gap Ge Quantum Well Embedded Inside InGaAs Alloy Layers
Pavarelli, N,Ochalski, TJ,Murphy-Armando, F,Huo, Y,Schmidt, M,Huyet, G,Harris, JS (2013) Optical Emission of a Strained Direct-Band-Gap Ge Quantum Well Embedded Inside InGaAs Alloy Layers. : . [Details]
2012Physical Review BGiant piezoresistance in silicon-germanium alloys
Murphy-Armando, F,Fahy, S (2012) Giant piezoresistance in silicon-germanium alloys. : . [Details]
2012Physical Review BFirst-principles investigation of the alloy scattering potential in dilute Si1-xCx
Vaughan, MP,Murphy-Armando, F,Fahy, S (2012) First-principles investigation of the alloy scattering potential in dilute Si1-xCx. : . [Details]
2012Journal of Applied PhysicsGiant enhancement of n-type carrier mobility in highly strained germanium nanostructures (vol 109, 113703, 2011)
Murphy-Armando, F;Fahy, S (2012) Giant enhancement of n-type carrier mobility in highly strained germanium nanostructures (vol 109, 113703, 2011). : AMER INST PHYSICS. [Details]
2011Journal of Applied PhysicsGiant enhancement of n-type carrier mobility in highly strained germanium nanostructures
Murphy-Armando, F;Fahy, S (2011) Giant enhancement of n-type carrier mobility in highly strained germanium nanostructures. : AMER INST PHYSICS. [Details]
2011Journal of Applied PhysicsFirst principles calculation of electron-phonon and alloy scattering in strained SiGe
Murphy-Armando, F;Fahy, S (2011) First principles calculation of electron-phonon and alloy scattering in strained SiGe. : AMER INST PHYSICS. [Details]
2011Chinese Journal Of PhysicsEffect of strain on the deformation potentials in Ge-like SiGe
Murphy-Armando, F;Fahy, S (2011) Effect of strain on the deformation potentials in Ge-like SiGe. : PHYSICAL SOC REPUBLIC CHINA.
2010NanolettersDeformation potentials and electron-phonon coupling in silicon nanowires.
Murphy-Armando F, Fagas G, Greer JC (2010) Deformation potentials and electron-phonon coupling in silicon nanowires.. : . [Details]
2008Physical Review BFirst-principles calculation of carrier-phonon scattering in n-type Si1-xGex alloys
Murphy-Armando, F;Fahy, S (2008) First-principles calculation of carrier-phonon scattering in n-type Si1-xGex alloys. : AMER PHYSICAL SOC. [Details]
2007Physical Review BFirst-principles calculation of p-type alloy scattering in Si1-xGex
Joyce, S;Murphy-Armando, F;Fahy, S (2007) First-principles calculation of p-type alloy scattering in Si1-xGex. : AMERICAN PHYSICAL SOC. [Details]
2006Physical Review LettersFirst-Principles Calculation of Alloy Scattering in Ge_xSi_1-x
Murphy-Armando, F. and Fahy, S.; (2006) First-Principles Calculation of Alloy Scattering in Ge_xSi_1-x. : . [Details]
2004Journal of Physics: Condensed MatterSpin--orbit coupling and electron spin resonance for interacting electrons in carbon nanotubes
De Martino, A. and Egger, R. and Murphy-Armando, F. and Hallberg, K. (2004) Spin--orbit coupling and electron spin resonance for interacting electrons in carbon nanotubes. : .

Conference Publications

YearPublication
2016Pushing the limits of silicon transistors
Saladukha, D,Ochalski, TJ,Murphy-Armando, F,Clavel, MB,Hudait, MK,Witzigmann, B,Osinski, M,Arakawa, Y (2016) Pushing the limits of silicon transistors. : . [Details]
2016Proc. SPIE 9755, Quantum Sensing and Nano Electronics and Photonics XIII
Hudait, Mantu; Clavel, M.; Lester, L.; Saladukha, Dzianis; Ochalski, Tomasz.Murphy-Armando, Felipe. (2016) Proc. SPIE 9755, Quantum Sensing and Nano Electronics and Photonics XIII. : . [Details]
20162016 13TH IEEE INTERNATIONAL CONFERENCE ON SOLID-STATE AND INTEGRATED CIRCUIT TECHNOLOGY (ICSICT)
Murphy-Armando, F;Liu, C;Zhao, Y;Duffy, R (2016) 2016 13TH IEEE INTERNATIONAL CONFERENCE ON SOLID-STATE AND INTEGRATED CIRCUIT TECHNOLOGY (ICSICT). : IEEE.
20142014 20TH INTERNATIONAL CONFERENCE ON ION IMPLANTATION TECHNOLOGY (IIT 2014)
Shayesteh, M;Connell, DO;Gity, F;Murphy-Armando, F;Yu, R;Huet, K;Toque-Tresonne, I;Cristiano, F;Boninelli, S;Henrichsen, HH;Petersen, DH;Nielsen, PF;Duffy, R (2014) 2014 20TH INTERNATIONAL CONFERENCE ON ION IMPLANTATION TECHNOLOGY (IIT 2014). : IEEE.
2014Laser thermal annealing of Ge, optimized for highly activated dopants and diode I-ON/I-OFF ratios
Shayesteh, M,Connell, DO,Gity, F,Murphy-Armando, F,Yu, R,Huet, K,Toque-Tresonne, I,Cristiano, F,Boninelli, S,Henrichsen, HH,Petersen, DH,Nielsen, PF,Duffy, R, (2014) Laser thermal annealing of Ge, optimized for highly activated dopants and diode I-ON/I-OFF ratios. : .
2014Proceedings of the International Conference on Ion Implantation Technology
Shayesteh M.;O'Connell D.;Gity F.;Murphy-Armando F.;Yu R.;Huet K.;Toque-Tresonne I.;Cristiano F.;Boninelli S.;Henrichsen H.;Petersen D.;Nielsen P.;Duffy R. (2014) Proceedings of the International Conference on Ion Implantation Technology. : . [Details]
2012Ultimate Integration on Silicon (ULIS), 2012 13th International Conference on
Murphy-Armando, F. and Fahy, S. (2012) Ultimate Integration on Silicon (ULIS), 2012 13th International Conference on. : .
20122012 13th International Conference on Ultimate Integration on Silicon, ULIS 2012
Murphy-Armando F.;Fahy S. (2012) 2012 13th International Conference on Ultimate Integration on Silicon, ULIS 2012. : . [Details]
20112011 12th International Conference on Ultimate Integration on Silicon, ULIS 2011
Vaughan M.;Murphy-Armando F.;Fahy S. (2011) 2011 12th International Conference on Ultimate Integration on Silicon, ULIS 2011. : . [Details]
20112011 12th International Conference on Ultimate Integration on Silicon, ULIS 2011
Murphy-Armando F.;Fahy S. (2011) 2011 12th International Conference on Ultimate Integration on Silicon, ULIS 2011. : . [Details]
2011Ultimate Integration on Silicon (ULIS), 2011 12th International Conference on
Murphy-Armando, F. and Fahy, S. (2011) Ultimate Integration on Silicon (ULIS), 2011 12th International Conference on. : .
2011Ultimate Integration on Silicon (ULIS), 2011 12th International Conference on
Vaughan, MP and Murphy-Armando, F. and Fahy, S. (2011) Ultimate Integration on Silicon (ULIS), 2011 12th International Conference on. : .

Conference Contributions

YearPublication
2012Piezo-resistance in $ n $-type Si $ _ $$1-x$$ $ Ge $ _x $ alloys as a function of alloy composition and strain
Murphy-Armando, F. and Fahy, S. (2012) Piezo-resistance in $ n $-type Si $ _ $$1-x$$ $ Ge $ _x $ alloys as a function of alloy composition and strain. : .
2008First principles calculation of carrier-phonon scattering in Si nanowires
Murphy-Armando, F. and McEniry, E.J. and Todorov, T.N. and Dundas, D. (2008) First principles calculation of carrier-phonon scattering in Si nanowires. : .
2006Hole mobility in SiGe alloys from first principles.
Joyce, S. and Murphy-Armando, F. and Fahy, S. (2006) Hole mobility in SiGe alloys from first principles.. : .
2006First-principles calculation of phonon scattering of n-type carriers in SiGe alloys
Murphy Armando, F. and Fahy, S. (2006) First-principles calculation of phonon scattering of n-type carriers in SiGe alloys. : .
2005First-principles calculation of alloy scattering of n-type carriers in SiGe
Murphy-Armando, F. and Fahy, S. (2005) First-principles calculation of alloy scattering of n-type carriers in SiGe. : .

Committees

  • Safety Committee,

Outreach Activities

Teaching Interests

2015 - Present, Condensed Matter Physics (PY3105)
2014-  Present, Nanoelectronics (UE6005)

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