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Title: Control and local measurement of the spin chemical potential in a magnetic insulator

Abstract

The spin chemical potential characterizes the tendency of spins to diffuse. Probing this quantity could provide insight into materials such as magnetic insulators and spin liquids and aid optimization of spintronic devices. Here we introduce single-spin magnetometry as a generic platform for nonperturbative, nanoscale characterization of spin chemical potentials. We experimentally realize this platform using diamond nitrogen-vacancy centers and use it to investigate magnons in a magnetic insulator, finding that the magnon chemical potential can be controlled by driving the system’s ferromagnetic resonance. We introduce a symmetry-based two-fluid theory describing the underlying magnon processes, measure the local thermomagnonic torque, and illustrate the detection sensitivity using electrically controlled spin injection. Our results pave the way for nanoscale control and imaging of spin transport in mesoscopic systems.

Authors:
ORCiD logo; ORCiD logo; ; ; ORCiD logo; ; ; ORCiD logo; ORCiD logo; ; ORCiD logo
Publication Date:
Research Org.:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Univ. of California, Los Angeles, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1434974
Alternate Identifier(s):
OSTI ID: 1536846
Grant/Contract Number:  
award272306; SC0012190; award300147; SC0001299, DE-FG02-09ER46577; SC0001299
Resource Type:
Published Article
Journal Name:
Science
Additional Journal Information:
Journal Name: Science Journal Volume: 357 Journal Issue: 6347; Journal ID: ISSN 0036-8075
Publisher:
American Association for the Advancement of Science (AAAS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Science & Technology - Other Topics

Citation Formats

Du, Chunhui, van der Sar, Toeno, Zhou, Tony X., Upadhyaya, Pramey, Casola, Francesco, Zhang, Huiliang, Onbasli, Mehmet C., Ross, Caroline A., Walsworth, Ronald L., Tserkovnyak, Yaroslav, and Yacoby, Amir. Control and local measurement of the spin chemical potential in a magnetic insulator. United States: N. p., 2017. Web. doi:10.1126/science.aak9611.
Du, Chunhui, van der Sar, Toeno, Zhou, Tony X., Upadhyaya, Pramey, Casola, Francesco, Zhang, Huiliang, Onbasli, Mehmet C., Ross, Caroline A., Walsworth, Ronald L., Tserkovnyak, Yaroslav, & Yacoby, Amir. Control and local measurement of the spin chemical potential in a magnetic insulator. United States. https://doi.org/10.1126/science.aak9611
Du, Chunhui, van der Sar, Toeno, Zhou, Tony X., Upadhyaya, Pramey, Casola, Francesco, Zhang, Huiliang, Onbasli, Mehmet C., Ross, Caroline A., Walsworth, Ronald L., Tserkovnyak, Yaroslav, and Yacoby, Amir. Thu . "Control and local measurement of the spin chemical potential in a magnetic insulator". United States. https://doi.org/10.1126/science.aak9611.
@article{osti_1434974,
title = {Control and local measurement of the spin chemical potential in a magnetic insulator},
author = {Du, Chunhui and van der Sar, Toeno and Zhou, Tony X. and Upadhyaya, Pramey and Casola, Francesco and Zhang, Huiliang and Onbasli, Mehmet C. and Ross, Caroline A. and Walsworth, Ronald L. and Tserkovnyak, Yaroslav and Yacoby, Amir},
abstractNote = {The spin chemical potential characterizes the tendency of spins to diffuse. Probing this quantity could provide insight into materials such as magnetic insulators and spin liquids and aid optimization of spintronic devices. Here we introduce single-spin magnetometry as a generic platform for nonperturbative, nanoscale characterization of spin chemical potentials. We experimentally realize this platform using diamond nitrogen-vacancy centers and use it to investigate magnons in a magnetic insulator, finding that the magnon chemical potential can be controlled by driving the system’s ferromagnetic resonance. We introduce a symmetry-based two-fluid theory describing the underlying magnon processes, measure the local thermomagnonic torque, and illustrate the detection sensitivity using electrically controlled spin injection. Our results pave the way for nanoscale control and imaging of spin transport in mesoscopic systems.},
doi = {10.1126/science.aak9611},
journal = {Science},
number = 6347,
volume = 357,
place = {United States},
year = {Thu Jul 13 00:00:00 EDT 2017},
month = {Thu Jul 13 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1126/science.aak9611

Citation Metrics:
Cited by: 156 works
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