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Title: Spin quenching assisted by a strongly anisotropic compression behavior in MnP

Here, we studied the crystal structure and spin state of MnP under high pressure with synchrotron X-ray diffraction and X-ray emission spectroscopy. MnP has an exceedingly strong anisotropy in compressibility, with the primary compressible direction along the b axis of the Pnma structure. X-ray emission spectroscopy reveals a pressure-driven quenching of the spin state in MnP. First-principles calculations suggest that the strongly anisotropic compression behavior significantly enhances the dispersion of the Mn d-orbitals and the splitting of the d-orbital levels compared to the hypothetical isotropic compression behavior. Thus, we propose spin quenching results mainly from the significant enhancement of the itinerancy of d electrons and partly from spin rearrangement occurring in the split d-orbital levels near the Fermi level. This explains the fast suppression of magnetic ordering in MnP under high pressure. The spin quenching lags behind the occurrence of superconductivity at ~8 GPa implying that spin fluctuations govern the electron pairing for superconductivity.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [6] ; ORCiD logo [5] ;  [7] ;  [7] ;  [5] ;  [8] ;  [2] ;  [9] ;  [10] ;  [11]
  1. Center for High Pressure Science and Technology Advanced Research, Shanghai (People's Republic of China); Carnegie Inst. of Washington, Argonne, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States); Florida Intl Univ., Miami, FL (United States)
  2. Nanjing Univ., Nanjing (People's Republic of China)
  3. Carnegie Inst. of Washington, Argonne, IL (United States); Univ. of Nevada, Las Vegas, NV (United States)
  4. Center for High Pressure Science and Technology Advanced Research, Shanghai (People's Republic of China)
  5. Argonne National Lab. (ANL), Argonne, IL (United States)
  6. Center for High Pressure Science and Technology Advanced Research, Shanghai (People's Republic of China); Carnegie Inst. of Washington, Argonne, IL (United States); Florida Intl Univ., Miami, FL (United States)
  7. Carnegie Inst. of Washington, Argonne, IL (United States)
  8. Center for High Pressure Science and Technology Advanced Research, Shanghai (People's Republic of China); Florida Intl Univ., Miami, FL (United States)
  9. Argonne National Lab. (ANL), Argonne, IL (United States); Northwestern Univ., Evanston, IL (United States)
  10. Center for High Pressure Science and Technology Advanced Research, Shanghai (People's Republic of China); Carnegie Inst. of Washington, Argonne, IL (United States)
  11. Center for High Pressure Science and Technology Advanced Research, Shanghai (People's Republic of China); Carnegie Institution of Washington, Washington, D.C. (United States)
Publication Date:
Grant/Contract Number:
AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
New Journal of Physics
Additional Journal Information:
Journal Volume: 20; Journal Issue: 2; Journal ID: ISSN 1367-2630
Publisher:
IOP Publishing
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
National Natural Science Foundation of China (NNSFC); USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; superconductivity; high pressure; spin state; structural distortion
OSTI Identifier:
1422553

Han, Fei, Wang, Di, Wang, Yonggang, Li, Nana, Bao, Jin -Ke, Li, Bing, Botana, Antia S., Xiao, Yuming, Chow, Paul, Chung, Duck Young, Chen, Jiuhua, Wan, Xiangang, Kanatzidis, Mercouri G., Yang, Wenge, and Mao, Ho -Kwang. Spin quenching assisted by a strongly anisotropic compression behavior in MnP. United States: N. p., Web. doi:10.1088/1367-2630/aaa3c3.
Han, Fei, Wang, Di, Wang, Yonggang, Li, Nana, Bao, Jin -Ke, Li, Bing, Botana, Antia S., Xiao, Yuming, Chow, Paul, Chung, Duck Young, Chen, Jiuhua, Wan, Xiangang, Kanatzidis, Mercouri G., Yang, Wenge, & Mao, Ho -Kwang. Spin quenching assisted by a strongly anisotropic compression behavior in MnP. United States. doi:10.1088/1367-2630/aaa3c3.
Han, Fei, Wang, Di, Wang, Yonggang, Li, Nana, Bao, Jin -Ke, Li, Bing, Botana, Antia S., Xiao, Yuming, Chow, Paul, Chung, Duck Young, Chen, Jiuhua, Wan, Xiangang, Kanatzidis, Mercouri G., Yang, Wenge, and Mao, Ho -Kwang. 2018. "Spin quenching assisted by a strongly anisotropic compression behavior in MnP". United States. doi:10.1088/1367-2630/aaa3c3. https://www.osti.gov/servlets/purl/1422553.
@article{osti_1422553,
title = {Spin quenching assisted by a strongly anisotropic compression behavior in MnP},
author = {Han, Fei and Wang, Di and Wang, Yonggang and Li, Nana and Bao, Jin -Ke and Li, Bing and Botana, Antia S. and Xiao, Yuming and Chow, Paul and Chung, Duck Young and Chen, Jiuhua and Wan, Xiangang and Kanatzidis, Mercouri G. and Yang, Wenge and Mao, Ho -Kwang},
abstractNote = {Here, we studied the crystal structure and spin state of MnP under high pressure with synchrotron X-ray diffraction and X-ray emission spectroscopy. MnP has an exceedingly strong anisotropy in compressibility, with the primary compressible direction along the b axis of the Pnma structure. X-ray emission spectroscopy reveals a pressure-driven quenching of the spin state in MnP. First-principles calculations suggest that the strongly anisotropic compression behavior significantly enhances the dispersion of the Mn d-orbitals and the splitting of the d-orbital levels compared to the hypothetical isotropic compression behavior. Thus, we propose spin quenching results mainly from the significant enhancement of the itinerancy of d electrons and partly from spin rearrangement occurring in the split d-orbital levels near the Fermi level. This explains the fast suppression of magnetic ordering in MnP under high pressure. The spin quenching lags behind the occurrence of superconductivity at ~8 GPa implying that spin fluctuations govern the electron pairing for superconductivity.},
doi = {10.1088/1367-2630/aaa3c3},
journal = {New Journal of Physics},
number = 2,
volume = 20,
place = {United States},
year = {2018},
month = {2}
}