Vankatraman Gopalan's research focuses on the science and technology of nonlinear optical materials. The work straddles materials science, physics, and optical engineering. There are three current areas of focus: complex oxides, semiconductor fibers and metalattices, and symmetry. Technology impacted by Gopalan's research includes:
- Multiferroics enable electrical control of magnetic devices, and vice versa, and dual electrical-magnetic storage media
- Nonlinear optical devices are targeted for optical communications and infrared applications
- The vision of hybrid semiconductor-metal-silica structures is all-fiber optoelectronics, where light generation, modulation and detection can be performed within a fiber
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Projects
Recent Publications
Stoichiometric Control and Optical Properties of BaTiO3 Thin Films Grown by Hybrid MBE
Fazlioglu-Yalcin, B., Suceava, A. C., Kuznetsova, T., Wang, K., Gopalan, V. & Engel-Herbert, R., Apr 14 2023, In: Advanced Materials Interfaces. 10, 11, 2300018.Research output: Contribution to journal › Article › peer-review
Growth and phase transition of Sr3Zr2O7 single crystals
Fukasawa, I., Maruyama, Y., Yoshida, S., Fujita, K., Takahashi, H., Ohgaki, M., Nagao, M., Watauchi, S., Gopalan, V., Tanaka, K. & Tanaka, I., Aug 1 2023, In: Journal of Crystal Growth. 615, 127241.Research output: Contribution to journal › Article › peer-review
Layered Semiconductor Cr0.32Ga0.68Te2.33 with Concurrent Broken Inversion Symmetry and Ferromagnetism: A Bulk Ferrovalley Material Candidate
Guan, Y., Miao, L., He, J., Ning, J., Chen, Y., Xie, W., Sun, J., Gopalan, V., Zhu, J., Wang, X., Alem, N., Zhang, Q. & Mao, Z., Mar 1 2023, In: Journal of the American Chemical Society. 145, 8, p. 4683-4690 8 p.Research output: Contribution to journal › Article › peer-review
MgSiP2: An Infrared Nonlinear Optical Crystal with a Large Non-Resonant Phase-Matchable Second Harmonic Coefficient and High Laser Damage Threshold
He, J., Guan, Y., Trinquet, V., Brunin, G., Wang, K., Robinson, R., Zu, R., Yoshida, S., Lee, S. H., Wang, Y., Zhu, Y., Rignanese, G. M., Mao, Z. & Gopalan, V., 2023, (Accepted/In press) In: Advanced Optical Materials.Research output: Contribution to journal › Article › peer-review
Stabilization of the Polar Structure and Giant Second-Order Nonlinear Response of Single Crystal γ-NaAs0.95Sb0.05Se2
Iyer, A. K., He, J., Xie, H., Goodling, D., Chung, D. Y., Gopalan, V. & Kanatzidis, M. G., Feb 23 2023, In: Advanced Functional Materials. 33, 9, 2211969.Research output: Contribution to journal › Article › peer-review
High-Throughput Screening Assisted Discovery of a Stable Layered Anti-Ferromagnetic Semiconductor: CdFeP2Se6
Kothakonda, M., Zhu, Y., Guan, Y., He, J., Kidd, J., Zhang, R., Ning, J., Gopalan, V., Xie, W., Mao, Z. & Sun, J., Feb 23 2023, In: Advanced Functional Materials. 33, 9, 2210965.Research output: Contribution to journal › Article › peer-review
Strong room-temperature bulk nonlinear Hall effect in a spin-valley locked Dirac material
Min, L., Tan, H., Xie, Z., Miao, L., Zhang, R., Lee, S. H., Gopalan, V., Liu, C. X., Alem, N., Yan, B. & Mao, Z., Dec 2023, In: Nature communications. 14, 1, 364.Research output: Contribution to journal › Article › peer-review
Landau-Ginzburg theory of charge density wave formation accompanying lattice and electronic long-range ordering
Morozovska, A. N., Eliseev, E. A., Gopalan, V. & Chen, L. Q., May 1 2023, In: Physical Review B. 107, 17, 174104.Research output: Contribution to journal › Article › peer-review
Sn-modified BaTiO3thin film with enhanced polarization
Nunn, W., Kumar, A., Zu, R., Nebgen, B., Yu, S., Kamath Manjeshwar, A., Gopalan, V., Lebeau, J. M., James, R. D. & Jalan, B., Mar 1 2023, In: Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films. 41, 2, 022701.Research output: Contribution to journal › Article › peer-review
Time domain thermoreflectance measurements and phonon gas modeling of the thermal conductivity of silicon doped indium phosphide pertinent to quantum cascade lasers
Perez, C., Talreja, D., Kirch, J., Zhang, S., Gopalan, V., Botez, D., Foley, B. M., Ramos-Alvarado, B. & Mawst, L. J., Apr 1 2023, In: APL Materials. 11, 4, 041107.Research output: Contribution to journal › Article › peer-review
Revealing the Short and Long-range Structural Distortions at Nb-doped KTaO3
Salmani-Rezaie, S., Schwaigert, T., Hazra, S., Gopalan, V., Schlom, D. G., Ahadi, K. & Muller, D. A., Jul 22 2023, In: Microscopy and Microanalysis. 29, 1, p. 1728-1730 3 p.Research output: Contribution to journal › Article › peer-review
Phase-field model of coupled insulator-metal transitions and oxygen vacancy redox reactions
Shi, Y., Gopalan, V. & Chen, L. Q., May 15 2023, In: Physical Review B. 107, 20, L201110.Research output: Contribution to journal › Article › peer-review
Enhancement of second-order optical nonlinearities and nanoscale periodic domain patterning in ferroelectric boron-substituted aluminum nitride thin films
Suceava, A., Hayden, J., Kelley, K. P., Xiong, Y., Fazlioglu-Yalcin, B., Dabo, I., Trolier-McKinstry, S., Maria, J. P. & Gopalan, V., Jun 1 2023, In: Optical Materials Express. 13, 6, p. 1522-1534 13 p.Research output: Contribution to journal › Article › peer-review
Thermodynamic and electron transport properties of Ca3Ru2 O7 from first-principles phonon calculations and Boltzmann transport theory
Wang, Y., Xiong, Y., Yang, T., Yuan, Y., Shang, S. L., Liu, Z. K., Gopalan, V., Dabo, I. & Chen, L. Q., Jan 15 2023, In: Physical Review B. 107, 3, 035118.Research output: Contribution to journal › Article › peer-review
Room temperature flash of single crystal titania: Electronic and optical properties
Yadav, D., Yuan, Y., Gopalan, V., Raj, R. & Jo, S., Jan 2023, In: Journal of the American Ceramic Society. 106, 1, p. 46-52 7 p.Research output: Contribution to journal › Article › peer-review