Probing thermal magnon current mediated by coherent magnon via nitrogen-vacancy centers in diamond
| Autor: | Prananto, Dwi, Kainuma, Yuta, Hayashi, Kunitaka, Mizuochi, Norikazu, Uchida, Ken-ichi, An, Toshu |
|---|---|
| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Physical Review Applied 16, 064058 (2021) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevApplied.16.064058 |
| Popis: | Currently, thermally excited magnons are being intensively investigated owing to their potential in computing devices and thermoelectric conversion technologies. We report the detection of thermal magnon current propagating in a magnetic insulator yttrium iron garnet under a temperature gradient using a quantum sensor: electron spins associated with nitrogen-vacancy (NV) centers in diamond. Thermal magnon current was observed as modified Rabi oscillation frequencies of NV spins hosted in a beam-shaped bulk diamond that resonantly coupled with coherent magnon propagating over a long distance. Additionally, using a nanodiamond, alteration in NV spin relaxation rates depending on the applied temperature gradient were observed under a non-resonant NV excitation condition. The demonstration of probing thermal magnon current mediated by coherent magnon via NV spin states serves as a basis for creating a device platform hybridizing spin caloritronics and spin qubits. Comment: 29 pages, 4 figures |
| Databáze: | arXiv |
| Externí odkaz: |
|