Design and Synthesis of Novel Materials for Spin Caloritronic Devices

Project Personnel

Gregory Fiete

Principal Investigator

Northeastern University


Chia-Ling Chien

Johns Hopkins University


Jianshi Zhou

University of Texas, Austin


Funding Divisions

Division of Materials Research (DMR), Office of Multidisciplinary Activities (OMA), Electrical, Communications and Cyber Systems (ECCS)

Microelectronics, which has propelled modern technologies to unprecedented levels, has been severely hampered by the intense Joule heating generated by the motion of electrical charge carriers. A new approach exploits pure spin currents in devices that use a minimum of electrical charge carriers, thus generating minimal heat in metals and virtually no heat in magnetic insulators, which are charge-carrier free. The spin Seebeck effect (SSE) allows one to generate a pure spin current from a temperature gradient in a magnetic insulator. The SSE, experimentally discovered only a few years ago, has lead to a burgeoning new field known as spin caloritronics, which offers new strategies for the conversion of waste heat to electricity as well as thermal management in electronic devices. This project, through close theory/experiment interactions, will focus on the fundamental understanding of the SSE effect and will explore new ferromagnetic and antiferromagnetic insulators for advancing spin caloritronic phenomena and devices.


Behavior of superconductivity in a Pb/Ag heterostructure
H. Nam, C. Zhang, W. Lee, S. Zhu, H. Gao, Q. Niu, G. A. Fiete, and C. Shih
Low-frequency and Moiré–Floquet engineering: A review
M. Rodriguez-Vega, M. Vogl, and G. A. Fiete
Deep learning of deformation-dependent conductance in thin films: Nanobubbles in graphene
J. G. Nedell, J. Spector, A. Abbout, M. Vogl, and G. A. Fiete
Floquet engineering of topological transitions in a twisted transition metal dichalcogenide homobilayer
M. Vogl, M. Rodriguez-Vega, B. Flebus, A. H. MacDonald, and G. A. Fiete
Floquet engineering of twisted double bilayer graphene
M. Rodriguez-Vega, M. Vogl, and G. A. Fiete
Effect of demagnetization factors on spin current transport
P. Wu, Y. Chan, T. Hung, Y. Zhang, D. Qu, T. Chuang, C. L. Chien, and S. Huang
Spin-to-Charge Conversion in Bi Films and Bi/Ag Bilayers
D. Yue, W. Lin, J. Li, X. Jin, and C.  . Chien
Incoherent spin pumping from YIG single crystals
Y. S. Chen, J. G. Lin, S. Y. Huang, and C. L. Chien
Electronic structure and magnetic exchange interactions of Cr-based van der Waals ferromagnets. A comparative study between CrBr3 and Cr2Ge2Te6
A. O. Fumega, S. Blanco-Canosa, H. Babu-Vasili, P. Gargiani, H. Li, J. Zhou, F. Rivadulla, and V. Pardo
Suppression of the antiferromagnetic metallic state in the pressurized MnBi2Te4 single crystal
K. Y. Chen, B. S. Wang, J. -. Yan, D. S. Parker, J. -. Zhou, Y. Uwatoko, and J. -. Cheng
Pure spin current phenomena
S. Y. Huang, D. Qu, T. C. Chuang, C. C. Chiang, W. Lin, and C. L. Chien
Spin freezing into a disordered state in CaFeTi2O6 synthesized under high pressure
X. Li, W. M. Xu, M. A. McGuire, Y. Cho, M. C. Downer, Y. Wan, X. Y. Li, Z. Y. Li, Q. Cui, J. -. Cheng, J. B. Goodenough, and J. -. Zhou
High pressure synthesis and characterization of the pyrochlore Dy2Pt2O7: A new spin ice material*
Q. Cui, Y. Cai, X. Li, Z. Dun, P. Sun, J. Zhou, H. Zhou, and J. Cheng
Spin-phonon interaction in yttrium iron garnet
K. S. Olsson, J. Choe, M. Rodriguez-Vega, G. Khalsa, N. A. Benedek, J. He, B. Fang, J. Zhou, G. A. Fiete, and X. Li
Light-Driven Topological and Magnetic Phase Transitions in Thin Layer Antiferromagnets
M. Rodriguez-Vega, Z. Lin, A. Leonardo, A. Ernst, M. G. Vergniory, and G. A. Fiete
Analog of Hamilton-Jacobi theory for the time-evolution operator
M. Vogl, P. Laurell, A. D. Barr, and G. A. Fiete
PTCDA Molecular Monolayer on Pb Thin Films: An Unusual π -Electron Kondo System and Its Interplay with a Quantum-Confined Superconductor
S. Lu, H. Nam, P. Xiao, M. Liu, Y. Guo, Y. Bai, Z. Cheng, J. Deng, Y. Li, H. Zhou, G. Henkelman, G. A. Fiete, H. Gao, A. H. MacDonald, C. Zhang, and C. Shih
Evidence of topological boundary modes with topological nodal-point superconductivity
A. K. Nayak, A. Steinbok, Y. Roet, J. Koo, G. Margalit, I. Feldman, A. Almoalem, A. Kanigel, G. A. Fiete, B. Yan, Y. Oreg, N. Avraham, and H. Beidenkopf
Real-time simulation of light-driven spin chains on quantum computers
M. Rodriguez-Vega, E. Carlander, A. Bahri, Z. Lin, N. A. Sinitsyn, and G. A. Fiete
Interfacial spin Seebeck effect in noncollinear magnetic systems
B. Flebus, Y. Tserkovnyak, and G. A. Fiete
Pure Spin Current and Magnon Chemical Potential in a Nonequilibrium Magnetic Insulator
K. S. Olsson, K. An, G. A. Fiete, J. Zhou, L. Shi, and X. Li
Electron–Phonon and Spin–Lattice Coupling in Atomically Thin Layers of MnBi2Te4
J. Choe, D. Lujan, M. Rodriguez-Vega, Z. Ye, A. Leonardo, J. Quan, T. N. Nunley, L. Chang, S. Lee, J. Yan, G. A. Fiete, R. He, and X. Li
Exotic physical properties in metallic perovskite LaRuO3 : Strong evidence for Hund metal
Z. Y. Li, X. Y. Li, J. M. He, M. A. McGuire, A. A. Aczel, J. A. Alonso, M. T. Fernandez-Diaz, and J. -. Zhou
Phonon-mediated dimensional crossover in bilayer CrI3
M. Rodriguez-Vega, Z. Lin, A. Leonardo, A. Ernst, G. Chaudhary, M. G. Vergniory, and G. A. Fiete
Monolayer 1T-NbSe 2 as a 2D-correlated magnetic insulator
M. Liu, J. Leveillee, S. Lu, J. Yu, H. Kim, C. Tian, Y. Shi, K. Lai, C. Zhang, F. Giustino, and C. Shih
Magnons and magnetic fluctuations in atomically thin MnBi2Te4
D. Lujan, J. Choe, M. Rodriguez-Vega, Z. Ye, A. Leonardo, T. N. Nunley, L. Chang, S. Lee, J. Yan, G. A. Fiete, R. He, and X. Li
Charge Disproportionation and Complex Magnetism in a PbMnO3 Perovskite Synthesized under High Pressure
X. Li, Z. Hu, Y. Cho, X. Li, H. Sun, L. Cong, H. Lin, S. Liao, C. Chen, A. Efimenko, C. J. Sahle, Y. Long, C. Jin, M. C. Downer, J. B. Goodenough, and J. Zhou
Evidence for spin swapping in an antiferromagnet
W. Lin, J. He, B. Ma, M. Matzelle, J. Xu, J. Freeland, Y. Choi, D. Haskel, B. Barbiellini, A. Bansil, G. A. Fiete, J. Zhou, and C. L. Chien
Weak ferromagnetism in perovskite oxides
J. -. Zhou, L. G. Marshall, Z. -. Li, X. Li, and J. -. He
Magnetic Control of Soft Chiral Phonons in PbTe
A. Baydin, F. G.  . Hernandez, M. Rodriguez-Vega, A. K. Okazaki, F. Tay, G. T. Noe, I. Katayama, J. Takeda, H. Nojiri, P. H.  . Rappl, E. Abramof, G. A. Fiete, and J. Kono
Observation of Vector Spin Seebeck Effect in a Noncollinear Antiferromagnet
J. Xu, J. He, J. -. Zhou, D. Qu, S. Huang, and C.  . Chien
Out-of-plane magnetic anisotropy in bulk ilmeniteCoTiO3
M. Arruabarrena, A. Leonardo, M. Rodriguez-Vega, G. A. Fiete, and A. Ayuela

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Research Highlights

Evidence for Spin Swapping in an Antiferromagnet
J. Zhou (U. Texas-Austin); G. Fiete (Northeastern U.); C.L. Chien (Johns Hopkins U.)
Measurement of a Magnon Chemical Potential
Gregory Fiete (Northeastern University) Jianshi Zhou (University of Texas-Austin)
Evidence for Spin Swapping in an Antiferromagnet
J. Zhou (U. Texas-Austin); G. Fiete (Northeastern U.); C.L. Chien (Johns Hopkins U.)
Evidence for Spin Swapping in an Antiferromagnet
J. Zhou (U. Texas-Austin); G. Fiete (Northeastern U.); C.L. Chien (Johns Hopkins U.)

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