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DOE funds to help researchers reveal mysteries of magnetic materials

The Cornell Chronicle did a short piece on our recent DOE award for scanned-probe magneto-thermal microscopy of skyrmions: “DOE funds to help researchers reveal mysteries of magnetic materials.”

Several new papers are out

We have several new papers out for both diamond spins and magneto-thermal microscopy:

“Imaging uncompensated moments and exchange-biased emergent ferromagnetism in FeRh thin films” by Isaiah Gray, Gregory M. Stiehl, John T. Heron, Antonio B. Mei, Darrell G. Schlom, Ramamoorthy Ramesh, Daniel C. Ralph, and Gregory D. Fuchs is now posted on the arXiv. In this work we use magneto-thermal microscopy to study unusual exchange bias and ferromagnet-antiferromagnet coupling in FeRh.
“Local Photothermal Control of Phase Transitions for On-demand Room-temperature Rewritable Magnetic Patterning” by Antonio B. Mei, Isaiah Gray, Yongjian Tang, Jurgen Schubert, Don Werder, Jason Bartell, Daniel C. Ralph, Gregory D. Fuchs, and Darrell G. Schlom was posted on the arXiv at the same time. In this we we demonstrate patterning ferromagnetism in FeRh at room temperature.
“Engineering electron-phonon coupling of quantum defects to a semi-confocal acoustic resonator” by Huiyao Chen, Noah F. Opondo, Boyang Jiang, Evan R. MacQuarrie, Raphaël S. Daveau, Sunil A. Bhave, and Gregory D. Fuchs is on the arXiv. In this work we demonstrate a wavelength-scale bulk acoustic resonator in diamond that has enhanced spin-phonon coupling and optical collection.
“Dual-frequency spin resonance spectroscopy of diamond nitrogen-vacancy centers in zero magnetic field” by A. K. Dmitriev^†, H. Y. Chen^†, G. D. Fuchs, A. K. Vershovskii is in press at Phys. Rev. A. In this work we model zero-field phenomena based on Landau-Zener-Stückelberg tunneling of diamond NV center ensembles.

Cornell receives nearly $3.5M in federal push for quantum information research

Here is a link to the Cornell Chronicle article on our recent DOE quantum information science award: Cornell receives nearly $3.5M in federal push for quantum information research

Congratulations Dr. Jungwirth!

Contratulations to Nick Jungwirth for sucessfully defending his Ph.D. thesis, “An Exploration of Defect-based Single Photon Sources: Zinc Oxide and Hexagonal Boron Nitride.”

Isaiah’s NiO paper is now posted to the arXiv

Our paper, “Spin Seebeck imaging of spin-torque switching in antiferromagnetic Pt/NiO/Pt heterostructures,” by Isaiah Gray, Takahiro Moriyama, Nikhil Sivadas, Ryan Need, Brian J. Kirby, David H. Low, Gregory M. Stiehl, John T. Heron, Daniel C. Ralph, Katja C. Nowack,Teruo Ono, and Gregory D. Fuchs is now posted to the arXiv.

Emrah’s MnFeGe MBE paper is out at PRM

Our paper “Engineering Dzyaloshinskii-Moriya interaction in B20 thin film chiral magnets” by Emrah Turgut, Hanjong Paik, Kayla Nguyen, David A. Muller, Darrell G. Schlom, Gregory D. Fuchs is now out at Physical Review Materials.

Congratulations to Emrah Turgut – now an assistant professor at Oklahoma State University

Hearty congratulations to Professor Emrah Turgut, who has left our group to start his own at Oklahoma State University in Physics

Congratulations Dr. Bartell!

Congratulations to Dr. Jason Bartell for defending his thesis, “Time-Resolved Magnetic Microscopy Using Near- and Far-Field Picosecond Heating.”

Huiyao’s NV center orbital state manipulation paper is out at PRL with an editor’s suggestion.

Our paper, “Orbital state manipulation of a diamond nitrogen-vacancy center using a mechanical resonator,” by H. Y. Chen, E. R. MacQuarrie, and G. D. Fuchs is out in Physical Review Letters with an editor’s suggestion.

Fuchs Group talks at the APS March Meeting

This year there will be 6 talks from the Fuchs Group – come see us!