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Featured Publications

Optical control of the moiré twist angle

Manuscript

Ziren He, Prathap Jharapla, Nicolas Leconte, Jeil Jung, Guru Khalsa

arXiv.2503.15882 (2025)

DOI

Optical Control of Ferroaxial Order

Journal

Zhiren He, Guru Khalsa

Physical Review Research, 6, 043220 (2024)

DOI

Self-activated epitaxial growth of ScN films from molecular nitrogen at low temperatures

Journal

Chandrashekhar P. Savant, Anita Verma, Thai-Son Nguyen, Len van Deurzen, Yu-Hsin Chen, Zhiren He, Salva S. Rezaie, Jakob Gollwitzer, Benjamin Gregory, Suchismita Sarker, Jacob Ruff, Guru Khalsa, Andrej Singer, David A. Muller, Huili G. Xing, Debdeep Jena, Joseph Casamento

APL Materials, 12, 111108 (2024)

DOI

Coherent control of the translational and point group symmetries of crystals with light

Journal

Guru Khalsa*, Jeffrey Kaaret*, Nicole A. Benedek

Physical Review B, 109, 024110 (2024)

*Co-first authors

DOI

Momentum-resolved electronic band structure and offsets in an epitaxial NbN/GaN superconductor/semiconductor heterojunction

Journal

Tianlun Yu, John Wright, Guru Khalsa, Betül Pamuk, Celesta S. Chang, Yury Matveyev, Thorsten Schmitt, Donglai Feng, David Muller, Grace Xing, Debdeep Jena, Vladimir N. Strocov

Science Advances, 7, eabi5833 (2021)

Cornell Chronicle Article | Paul Scherrer Institut Article | 2020 Ed Nicollian Award from the IEEE

DOI

All Publications

2025

Optical control of the moiré twist angle

Manuscript

Ziren He, Prathap Jharapla, Nicolas Leconte, Jeil Jung, Guru Khalsa

arXiv.2503.15882 (2025)

DOI: 10.48550/arXiv.2503.15882

2024

Picosecond expansion in LaAlO $_3$ resonantly driven by infrared-active phonons

Manuscript

Jakob Gollwitzer, Jeffrey Z. Kaaret, Y. Eren Suyolcu, Guru Khalsa, Rylan C. Fernandes, Oleg Gorobtsov, Sören Buchenau, ChanJu You, Jayanti Higgins, Ryan S. Russell, Ziming Shao, Yorick A. Birkhölzer, Takahiro Sato, Matthieu Chollet, Giacomo Coslovich, Mario Brützam, Christo Guguschev, John W. Harter, Ankit S. Disa, Darrell G. Schlom, Nicole A. Benedek, Andrej Singer

arXiv.2412.17192 (2024)

DOI: 10.48550/arXiv.2412.17192

Optical Control of Ferroaxial Order

Journal

Zhiren He, Guru Khalsa

Physical Review Research, 6, 043220 (2024)

DOI: 10.1103/PhysRevResearch.6.043220

Self-activated epitaxial growth of ScN films from molecular nitrogen at low temperatures

Journal

APL Materials, 12, 111108 (2024)

DOI: 10.1063/5.0222995

Resonantly enhanced third-harmonic generation in the infrared

Journal

Jiaoyang Zheng, Guru Khalsa, Jeffrey Moses

Physical Review Applied, 22, 014066 (2024)

DOI: 10.1103/PhysRevApplied.22.014066

Picosecond volume expansion drives a later-time insulator-metal transition in a nano-textured Mott insulator

Journal

Anita Verma, Denis Golež, Oleg Yu. Gorobtsov, Kelson Kaj, Ryan Russell, Jeffrey Z. Kaaret, Erik Lamb, Guru Khalsa, Hari P. Nair, Yifei Sun, Ryan Bouck, Nathaniel Schreiber, Jacob P. Ruf, Varun Ramaprasad, Yuya Kubota, Tadashi Togashi, Vladimir A. Stoica, Hari Padmanabhan, John W. Freeland, Nicole A. Benedek, Oleg Shpyrko, John W. Harter, Richard D. Averitt, Darrell G. Schlom, Kyle M. Shen, Andrew J. Millis, Andrej Singer

Nature Physics, 20, 807-814 (2024)

Cornell Chronicle Article

DOI: 10.1038/s41567-024-02396-1

Coherent control of the translational and point group symmetries of crystals with light

Journal

Guru Khalsa*, Jeffrey Kaaret*, Nicole A. Benedek

Physical Review B, 109, 024110 (2024)

*Co-first authors

DOI: 10.1103/PhysRevB.109.024110

2022

Giant Optical Nonlinearities and Ultrafast Control of Optical Symmetry via IR-Resonant Raman Scattering

Conference Proceedings

Guru Khalsa, Nicole A. Benedek, Jeffrey Moses

2022 International Conference on Ultrafast Phenomena, W3A.1 (2022)

DOI: 10.1364/UP.2022.W3A.1

Two-pulse enabled coherent control of structural dynamics

Conference Proceedings

Jiaoyang Zheng, Guru Khalsa, Nicole A. Benedek, Jeffrey Moses

2022 International Conference on Ultrafast Phenomena, W4A.20 (2022)

DOI: 10.1364/UP.2022.W4A.20

Tight-binding band structure of $\beta$ - and $\alpha$ -phase Ga $_2$ O $_3$ and Al $_2$ O $_3$

Journal

Yifan Zhang, Mengren Liu, Debdeep Jena, Guru Khalsa

Journal of Applied Physics, 131, 175702 (2022)

DOI: 10.1063/5.0074598

A strategy to identify materials exhibiting a large nonlinear phononics response: tuning the ultrafast structural response of LaAlO $_3$ with pressure

Journal

Jeffrey Z. Kaaret, Guru Khalsa, Nicole A. Benedek

Journal of Physics: Condensed Matter, 34, 035402 (2022)

DOI: 10.1088/1361-648X/ac3038

2021

Giant Optical Nonlinearities via Infrared-Resonant Raman Scattering

Conference Proceedings

Guru Khalsa, Nicole A. Benedek, Jeffrey Moses

2021 Nonlinear Optics: Materials, Fundamentals and Applications, NF2B.4 (2021)

DOI: 10.1364/NLO.2021.NF2B.4

Reservoir Computing Leveraging the Transient Non-linear Dynamics of Spin-Torque Nano-Oscillators

Book Chapter

Mathieu Riou, Jacob Torrejon, Flavio Abreu Araujo, Sumito Tsunegi, Guru Khalsa, Damien Querlioz, Paolo Bortolotti, Nathan Leroux, Danijela Marković, Vincent Cros, Kay Yakushiji, Akio Fukushima, Hitoshi Kubota, Shinji Yuasa, Mark D. Stiles, Julie Grollier

in Reservoir Computing: Theory, Physical Implementations, and Applications (Springer), 307-329 (2021)

DOI: 10.1007/978-981-13-1687-6_13

The influence of the 6s $^{3+}$ on the structures of A'BiNb $_2$ O $_7$ (A' = Rb, Na, Li) layered perovskite oxides

Journal

Subhadip Mallick, Guru Khalsa, Jeffrey Z. Kaaret, Weiguo Zhang, Maria Batuk, Alexandra S. Gibbs, Joke Hadermann, P. Shiv Halasyamani, Nicole A. Benedek, Michael A. Hayward

Dalton Transactions, 50, 15359-15369 (2021)

DOI: 10.1039/d1dt02974f

Momentum-resolved electronic band structure and offsets in an epitaxial NbN/GaN superconductor/semiconductor heterojunction

Journal

Tianlun Yu, John Wright, Guru Khalsa, Betül Pamuk, Celesta S. Chang, Yury Matveyev, Thorsten Schmitt, Donglai Feng, David Muller, Grace Xing, Debdeep Jena, Vladimir N. Strocov

Science Advances, 7, eabi5833 (2021)

Cornell Chronicle Article | Paul Scherrer Institut Article | 2020 Ed Nicollian Award from the IEEE

DOI: 10.1126/sciadv.abi5833

Majorana zero modes in a cylindrical semiconductor quantum wire

Journal

Chao Lei, Guru Khalsa, Jiangfeng Du, Allan H. MacDonald

Physical Review B, 104, 035426 (2021)

DOI: 10.1103/PhysRevB.104.035426

Spin-phonon interaction in yttrium iron garnet

Journal

Kevin S. Olsson, Jeongheon Choe, Martin Rodriguez-Vega, Guru Khalsa, Nicole A. Benedek, Jiaming He, Bin Fang, Jianshi Zhou, Gregory A. Fiete, Xiaoqin Li

Physical Review B, 104, L020401 (2021)

DOI: 10.1103/PhysRevB.104.L020401

Ultrafast Control of Material Optical Properties via the Infrared Resonant Raman Effect

Journal

Guru Khalsa, Nicole A. Benedek, Jeffrey Moses

Physical Review X, 11, 021067 (2021)

DOI: 10.1103/PhysRevX.11.021067

An all-epitaxial nitride heterostructure with concurrent quantum Hall effect and superconductivity

Journal

Phillip Dang, Guru Khalsa, S. Chang, D. Scott Katzer, Neeraj Nepal, Brian P. Downey, Virginia D. Wheeler, Alexey Suslov, Andy Xie, Edward Beam, Yu Cao, Cathy Lee, David A. Muller, Huili Grace Xing, David J. Meyer, Debdeep Jena

Science Advances, 7, eabf1388 (2021)

Cornell Chronicle Article | 2021 MRS Best Oral Presentation – Phillip Dang

DOI: 10.1126/sciadv.abf1388

Unexplored MBE growth mode reveals new properties of superconducting NbN

Journal

John Wright, Celesta Chang, Dacen Waters, Felix Lüpke, Randall Feenstra, Lucy Raymond, Rosalyn Koscica, Guru Khalsa, David Muller, Huili G. Xing, Debdeep Jena

Physical Review Materials, 5, 024802 (2021)

DOI: 10.1103/PhysRevMaterials.5.024802

2019

Molecular Beam Epitaxy of Transition Metal Nitrides for Superconducting Device Applications

Conference Proceedings

D. Scott Katzer, Neeraj Nepal, Matthew T. Hardy, Brian P. Downey, David F. Storm, Eric N. Jin, David J. Meyer, Rusen Yan, Guru Khalsa, John Wright, Huili Xing, Debdeep Jena

2019 Compound Semiconductor Week (CSW), 1-1 (2019)

DOI: 10.1109/ICIPRM.2019.8819351

Molecular Beam Epitaxy of Transition Metal Nitrides for Superconducting Device Applications

Journal

D. Scott Katzer, Neeraj Nepal, Matthew T. Hardy, Brian P. Downey, David F. Storm, Eric N. Jin, Rusen Yan, Guru Khalsa, John Wright, Tyler A. Growden, Vikrant Gokhale, Virginia D. Wheeler, Alan R. Kramer, Joan E. Yater, Huili Grace Xing, Debdeep Jena, David J. Meyer

Physica Status Solidi A, 217, 1900675 (2019)

Cover article

DOI: 10.1002/pssa.201900675

Adsorption-controlled growth and properties of epitaxial SnO films

Journal

Antonio B. Mei, Ludi Miao, Matthew J. Wahila, Guru Khalsa, Zhe Wang, Matthew Barone, Nathaniel J. Schreiber, Lindsey E. Noskin, Hanjong Paik, Thomas E. Tiwald, Qiye Zheng, Richard T. Haasch, Davide G. Sangiovanni, Louis F. J. Piper, Darrell G. Schlom

Physical Review Materials, 3, 105202 (2019)

DOI: 10.1103/PhysRevMaterials.3.105202

The new nitrides: layered, ferroelectric, magnetic, metallic, and superconducting nitrides to boost the $GaN$ photonics and electronics eco-system

Journal

Debdeep Jena, Ryan Page, Joseph Casamento, Phillip Dang, Jashan Singhal, Zexuan Zhang, John Wright, Guru Khalsa, Yongjin Cho, Huili Grace Xing

Japanese Journal of Applied Physics, 58, SC0801 (2019)

DOI: 10.7567/1347-4065/ab147b

Thickness dependence of superconductivity in ultrathin NbS $_2$

Journal

Yan R., Guru Khalsa, Brian T. Schaefer, Alexander Jarjour, Sergei Rouvimov, Katja C. Nowack, Huili G. Xing, Debdeep Jena

Applied Physics Express, 12, 023008 (2019)

DOI: 10.7567/1882-0786/aaff89

2018

Cation Exchange as a Mechanism To Engineer Polarity in Layered Perovskites

Journal

Tong Zhu, Guru Khalsa, Dana M. Havas, Alexandra S. Gibbs, Weiguo Zhang, P. Shiv Halasyamani, Nicole A. Benedek, Michael A. Hayward

Chemistry of Materials, 30, 8915-8924 (2018)

DOI: 10.1021/acs.chemmater.8b04136

Ultrafast optically induced ferromagnetic/anti-ferromagnetic phase transition in GdTiO $_3$ from first principles

Journal

Guru Khalsa, Nicole A. Benedek

npj Quantum Materials, 3, 15 (2018)

Cornell Chronicle Article

DOI: 10.1038/s41535-018-0086-3

GaN/NbN epitaxial semiconductor/superconductor heterostructures

Journal

Rusen Yan*, Guru Khalsa*, Suresh Vishwanath, Yimo Han, John Wright, Sergei Rouvimov, D. Scott Katzer, Neeraj Nepal, Brian P. Downey, David A. Muller, Huili G. Xing, David J. Meyer, Debdeep Jena

Nature, 555, 183-189 (2018)

*Co-first authors | Nature News & Views | Cornell Chronicle Article

DOI: 10.1038/nature25768

2017

Neuromorphic computing through time-multiplexing with a spin-torque nano-oscillator

Conference Proceedings

Mathieu Riou, Flavio Abreu Araujo, Jacob Torrejon, Sumito Tsunegi, Guru Khalsa, Damien Querlioz, Paolo Bortolotti, Vincent Cros, Kay Yakushiji, Akio Fukushima, Hitoshi Kubota, Shinji Yuasa, Mark Stiles, Julie Grollier

2017 IEEE International Electron Devices Meeting (IEDM), 36.3.1-36.3.4 (2017)

DOI: 10.1109/IEDM.2017.8268505

Neuromorphic computing with nanoscale spintronic oscillators

Journal

Jacob Torrejon, Mathieu Riou, Flavio Abreu Araujo, Sumito Tsunegi, Guru Khalsa, Damien Querlioz, Paolo Bortolotti, Vincent Cros, Akio Fukushima, Hitoshi Kubota, Shinji Yuasa, Mark D. Stiles, Julie Grollier

Nature, 547, 428-431 (2017)

Nature - News & Views | La Recherche Article | 2018 La Prix La Recherche – Physique

DOI: 10.1038/nature23011

2016

Spatially inhomogeneous electron state deep in the extreme quantum limit of strontium titanate

Journal

Anand Bhattacharya, Brian Skinner, Guru Khalsa, Alexey V. Suslov

Nature Communications, 7, 12974 (2016)

DOI: 10.1038/ncomms12974

2015

Critical current and linewidth reduction in spin-torque nano-oscillators by delayed self-injection

Journal

Guru Khalsa, Mark D. Stiles, Julie Grollier

Applied Physics Letters, 106, 242402 (2015)

DOI: 10.1063/1.4922740

2014

Weak localization, spin relaxation, and spin diffusion: Crossover between weak and strong Rashba coupling limits

Journal

Yasufumi Araki, Guru Khalsa, Allan H. MacDonald

Physical Review B, 90, 125309 (2014)

DOI: 10.1103/PhysRevB.90.125309

Optical conductivity of the t $_{2g}$ two-dimensional electron gas

Journal

Ming Xie, Guru Khalsa, Allan H. MacDonald

Physical Review B, 89, 245417 (2014)

DOI: 10.1103/PhysRevB.89.245417

2013

Conduction-band edge and Shubnikov-de Haas effect in low-electron-density SrTiO $_3$

Journal

S. James Allen, Bharat Jalan, SungBin Lee, Daniel G. Ouellette, Guru Khalsa, Jan Jaroszynski, Susanne Stemmer, Allan H. MacDonald

Physical Review B, 88, 045114 (2013)

DOI: 10.1103/PhysRevB.88.045114

Theory of t $_{2g}$ electron-gas Rashba interactions

Journal

Guru Khalsa, Byounghak Lee, Allan H. MacDonald

Physical Review B, 88, 041302(R) (2013)

DOI: 10.1103/PhysRevB.88.04130

Uniaxial strain-induced band splitting in semiconducting SrTiO $_3$

Journal

Young Jun Chang, Guru Khalsa, Luca Moreschini, Andrew L. Walter, Aaron Bostwick, Karsten Horn, Allan H. MacDonald, Eli Rotenberg

Physical Review B, 87, 115212 (2013)

DOI: 10.1103/PhysRevB.87.115212

2012

Theory of the SrTiO $_3$ surface state two-dimensional electron gas

Journal

Guru Khalsa, Allan H. MacDonald

Physical Review B, 86, 125121 (2012)

Editor's Choice

DOI: 10.1103/PhysRevB.86.125121

2011

Electronic structure of doped d $^0$ perovskite semiconductors

Journal

Rafi Bistritzer, Guru Khalsa, Allan H. MacDonald

Physical Review B, 83, 115114 (2011)

DOI: 10.1103/PhysRevB.83.115114

Publications

Featured Publications

Optical control of the moiré twist angle

Optical Control of Ferroaxial Order

Self-activated epitaxial growth of ScN films from molecular nitrogen at low temperatures

Coherent control of the translational and point group symmetries of crystals with light

Momentum-resolved electronic band structure and offsets in an epitaxial NbN/GaN superconductor/semiconductor heterojunction

All Publications

2025

Optical control of the moiré twist angle

2024

Picosecond expansion in LaAlO3_33​ resonantly driven by infrared-active phonons

Optical Control of Ferroaxial Order

Self-activated epitaxial growth of ScN films from molecular nitrogen at low temperatures

Resonantly enhanced third-harmonic generation in the infrared

Picosecond volume expansion drives a later-time insulator-metal transition in a nano-textured Mott insulator

Coherent control of the translational and point group symmetries of crystals with light

2022

Giant Optical Nonlinearities and Ultrafast Control of Optical Symmetry via IR-Resonant Raman Scattering

Two-pulse enabled coherent control of structural dynamics

Tight-binding band structure of β\betaβ- and α\alphaα-phase Ga2_22​O3_33​ and Al2_22​O3_33​

A strategy to identify materials exhibiting a large nonlinear phononics response: tuning the ultrafast structural response of LaAlO3_33​ with pressure

2021

Giant Optical Nonlinearities via Infrared-Resonant Raman Scattering

Reservoir Computing Leveraging the Transient Non-linear Dynamics of Spin-Torque Nano-Oscillators

The influence of the 6s3+^{3+}3+ on the structures of A'BiNb2_22​O7_77​ (A' = Rb, Na, Li) layered perovskite oxides

Momentum-resolved electronic band structure and offsets in an epitaxial NbN/GaN superconductor/semiconductor heterojunction

Majorana zero modes in a cylindrical semiconductor quantum wire

Spin-phonon interaction in yttrium iron garnet

Ultrafast Control of Material Optical Properties via the Infrared Resonant Raman Effect

An all-epitaxial nitride heterostructure with concurrent quantum Hall effect and superconductivity

Unexplored MBE growth mode reveals new properties of superconducting NbN

2019

Molecular Beam Epitaxy of Transition Metal Nitrides for Superconducting Device Applications

Molecular Beam Epitaxy of Transition Metal Nitrides for Superconducting Device Applications

Adsorption-controlled growth and properties of epitaxial SnO films

The new nitrides: layered, ferroelectric, magnetic, metallic, and superconducting nitrides to boost the GaNGaNGaN photonics and electronics eco-system

Thickness dependence of superconductivity in ultrathin NbS2_22​

2018

Cation Exchange as a Mechanism To Engineer Polarity in Layered Perovskites

Ultrafast optically induced ferromagnetic/anti-ferromagnetic phase transition in GdTiO3_33​ from first principles

GaN/NbN epitaxial semiconductor/superconductor heterostructures

2017

Neuromorphic computing through time-multiplexing with a spin-torque nano-oscillator

Neuromorphic computing with nanoscale spintronic oscillators

2016

Spatially inhomogeneous electron state deep in the extreme quantum limit of strontium titanate

2015

Critical current and linewidth reduction in spin-torque nano-oscillators by delayed self-injection

2014

Weak localization, spin relaxation, and spin diffusion: Crossover between weak and strong Rashba coupling limits

Optical conductivity of the t2g_{2g}2g​ two-dimensional electron gas

2013

Conduction-band edge and Shubnikov-de Haas effect in low-electron-density SrTiO3_33​

Theory of t2g_{2g}2g​ electron-gas Rashba interactions

Uniaxial strain-induced band splitting in semiconducting SrTiO3_33​

2012

Theory of the SrTiO3_33​ surface state two-dimensional electron gas

2011

Electronic structure of doped d0^00 perovskite semiconductors

Picosecond expansion in LaAlO $_3$ resonantly driven by infrared-active phonons

Tight-binding band structure of $\beta$ - and $\alpha$ -phase Ga $_2$ O $_3$ and Al $_2$ O $_3$

A strategy to identify materials exhibiting a large nonlinear phononics response: tuning the ultrafast structural response of LaAlO $_3$ with pressure

The influence of the 6s $^{3+}$ on the structures of A'BiNb $_2$ O $_7$ (A' = Rb, Na, Li) layered perovskite oxides

The new nitrides: layered, ferroelectric, magnetic, metallic, and superconducting nitrides to boost the $GaN$ photonics and electronics eco-system

Thickness dependence of superconductivity in ultrathin NbS $_2$

Ultrafast optically induced ferromagnetic/anti-ferromagnetic phase transition in GdTiO $_3$ from first principles

Optical conductivity of the t $_{2g}$ two-dimensional electron gas

Conduction-band edge and Shubnikov-de Haas effect in low-electron-density SrTiO $_3$

Theory of t $_{2g}$ electron-gas Rashba interactions

Uniaxial strain-induced band splitting in semiconducting SrTiO $_3$

Theory of the SrTiO $_3$ surface state two-dimensional electron gas

Electronic structure of doped d $^0$ perovskite semiconductors