Chenhui Yu

Prof. Dr. Chenhui Yu

School of Microelectronics, Nantong University, Nantong, Jiangsu, China
orcid

Research Focus & Metrics

Academic Career Length

28Years (1999-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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25 September 2018 in Physical Review Letters
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Journal Article
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MHM. Harder
M. Harder
YYY. Yang
Y. Yang
BYB. M. Yao
B. M. Yao
CYChenhui Yu
Chenhui Yu
JRJ. W. Rao
J. W. Rao
CHC.-M. Hu
C.-M. Hu
We report dissipative magnon-photon coupling caused by the cavity Lenz effect, where the magnons in a magnet induce a rf current in the cavity, leading to a cavity backaction that impedes the magnetization dynamics. This effect is revealed in our experiment as level attraction with a coalescence of hybridized magnon-photon modes, which is distinctly different from level repulsion with mode anticrossing caused by coherent magnon-photon coupling. We develop a method to control the interpolation of coherent and dissipative magnon-photon coupling, and observe a matching condition where the two effects cancel. Our work sheds light on the so-far hidden side of magnon-photon coupling, opening a new avenue for controlling and utilizing light-matter interactions.

3 November 1999 in Applied Physics Letters
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Journal Article
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GWG. H. Wu
G. H. Wu
CYChenhui Yu
Chenhui Yu
LML. Q. Meng
L. Q. Meng
JCJ. L. Chen
J. L. Chen
FYF. M. Yang
F. M. Yang
LZL. C. Zhao
L. C. Zhao
A giant magnetic-field-induced strain (MFIS) of −3100 ppm has been obtained in Heusler alloy Ni52Mn22.2Ga25.8 single crystal in the [001] direction at a temperature from 23 to 31 °C. This MFIS reaches saturation in an applied field about 6 kOe, and exhibits the same amplitude with an opposite sign while the field is perpendicular to the samples. According to a previous model, this MFIS associates with the twin boundary motion. The martensitic self-strain has been found to be 2%, implying a preferential orientation of martensite variants. Results related to the magnetic properties are discussed.

1 November 2000 in Applied Physics Letters
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Journal Article
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XZX. X. Zhang
X. X. Zhang
GWG. H. Wen
G. H. Wen
FWF. W. Wang
F. W. Wang
WWW. H. Wang
W. H. Wang
CYChenhui Yu
Chenhui Yu
GWG. H. Wu
G. H. Wu
A large magnetic entropy change has been observed in an intermetallic compound LaFe10.6Si2.4. The maximum −ΔSM≈3.2 J/kg K was found at its Curie temperature, ∼242 K, upon a 2 T magnetic field change. Although the entropy change is slightly smaller than that of pure Gd metal, such Fe-rich compounds still appear to be very attractive candidates since (a) the raw materials are much cheaper than pure Gd metal; (b) the Curie temperature can be easily shifted by tuning the composition; (c) the materials are much more chemically stable than pure Gd metal.

29 January 2021 in Advanced Functional Materials
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YCYunfeng Chen
Yunfeng Chen
WMWanli Ma
Wanli Ma
CTCongwei Tan
Congwei Tan
MLMan Luo
Man Luo
WZWei Zhou
Wei Zhou
WHWeida Hu
Weida Hu

27 September 2020 in Advanced Materials
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YWYang Wang
Yang Wang
PWPeisong Wu
Peisong Wu
ZWZhen Wang
Zhen Wang
MLMan Luo
Man Luo
FZFang Zhong
Fang Zhong
Weida HuWeida Hu
Weida Hu

7 November 2000 in Applied Physics Letters
Verified
Journal Article
Closed access
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WWW. H. Wang
W. H. Wang
GWG. H. Wu
G. H. Wu
JCJ. L. Chen
J. L. Chen
CYChenhui Yu
Chenhui Yu
SGS. X. Gao
S. X. Gao
LZL. C. Zhao
L. C. Zhao
Stress-free and two-way thermoelastic shape memory, with 1.2% strain and 6 K temperature hysteresis, has been found in single crystalline Ni52Mn24Ga24. The deformation can be enhanced more than three times, up to 4.0% shrinkage with a bias field 1.2 T applied along the measurement direction, or changed to 1.5% expansion by the 1.2 T applied perpendicular to the measurement direction. For achieving a large deformation, the magnetic field exhibits a more evident contribution than an external stress on this material. These characteristics can be attributed to the low level of internal stress and the preferential orientation of the martensitic variants.