About
👋 Welcome
I am Yihao Hu, a Ph.D. at the department of Physics, Westlake University & Zhejiang University, Hangzhou, Zhejiang, China.
🔬 Research Interests
📄 Publications
- Yihao Hu*, and Shi Liu*, "Double Helix of Atomic Displacements in Ferroelectric PbTiO3", Chin. Phys. Lett. 42, 120707 (2025) DOI
- Yonghao Yao, Hui Liu*, Yihao Hu, Kaustuv Datta, Jiagang Wu, Yuanpeng Zhang, Matthew G. Tucker, Shi Liu, Joerg C. Neuefeind, Shujun Zhang, and Jun Chen*, "Fluctuating local polarization: a generic fingerprint for enhanced piezoelectricity in Pb-based and Pb-free perovskite ferroelectrics", Nat. Commun. 16, 7442 (2025) DOI
- Ching-Che Lin, Yihao Hu, Jaegyu Kim, Djamila Lou, Ashwath Bhat, Pravin Kavle, Tae Yeon Kim, Chris Dames, Shi Liu*, and Lane W. Martin*, "Domain-wall enhanced pyroelectricity", Phys. Rev. X 15, 011063 (2025) DOI
- Hao Luo, Qi Liang, Anan Guo, Yimeng Yu, Haoyang Peng, Xiaoyi Gao, Yihao Hu, Xianli Su, Ctirad Uher, Yu Zheng, Dongwang Yang, Xiaolin Wang, Qingjie Zhang, Xinfeng Tang, Shi Liu, Gustaaf Van Tendeloo, Shujun Zhang* & Jinsong Wu*, "Current induced electromechanical strain in thin antipolar Ag2Se semiconductor", Nat. Commun. 16, 1818 (2025) DOI
- Yihao Hu, Jiyuan Yang, Shi Liu*, "Giant Piezoelectric Effects of Topological Structures in Stretched Ferroelectric Membranes", Phys. Rev. Lett. 133, 046802 (Editors' Suggestion) DOI
- Tingting Luo, Fanjie Xia, Quansheng Guo, Shi Liu*, Yihao Hu, Yaqiong Zhong, Junhao Qiu, Lin Liao, Wei Ji, Xianli Su, Jinsong Wu*, and Xinfeng Tang*, "Enhancing Thermoelectric Performance in Cubic CuCdInSe3 Compounds via Pressure-Induced Twin Boundary Engineering", ACS Appl. Energy Mater. 6, 24, 12379–12388 DOI
- Tingting Luo†, Yihao Hu†, Shi Liu, Fanjie Xia, Junhao Qiu, Haoyang Peng, Keke Liu, Quansheng Guo, XingZhong Li, Dongwang Yang, Xianli Su*, Jinsong Wu*, Xinfeng Tang*, "Entropy-driven structural transition from tetragonal to cubic phase: High thermoelectric performance of CuCdInSe3 compound", Mater. Today Phys. 37, 101211 DOI
- Changming Ke, Yihao Hu and Shi Liu*, "Depolarization Induced III-V Triatomic Layers with Tristable Polarization States", Nanoscale Horiz. 8, 616-623 DOI
- Jiawei Huang†, Yihao Hu†, and Shi Liu*, "Origin of ferroelectricity in magnesium doped zinc oxide", Phys. Rev. B 106, 144106 DOI
- Zijun Zhang†, Xing Chen†, Xiaoming Shi†, Yihao Hu, Jiawei Huang, Shi Liu, Zhaohui Ren, Houbing Huang, Gaorong Han, Gustaaf Van Tendeloo, Ze Zhang, He Tian*, "Morphotropic phase boundary in pure perovskite lead titanate at room temperature", Mater. Today Nano 20, 100275 DOI
- [Book] "电子材料计算", 刘仕 (Yihao Hu: 全局整合编写), 施建章, 彭仁赐, etc., 清华大学出版社, ISBN: 978-7-3026-7887-8
- [Book Chapter] "Multiscale simulations of ferroelectric oxides", Jiawei Huang, Zhuang Qian, Yihao Hu, Qisheng Yu and Shi Liu, Ferroelectrics: Advances in fundamental studies and emerging applications, ISBN: 978-0-7503-3975-9
Ferroelectric Topology
Dipole Spiral · Double Helix
铁电 PbTiO₃ 中的手性偶极双螺旋拓扑结构
Pb
O
Pb
O
Pb
Pb–O helix
🧬
DNA-like
O
Ti
O
Ti
O
Ti–O helix
Giant Piezoelectric Response
>320 pC/N
偶极螺旋的本征压电响应,远超传统铁电体。小角度偶极旋转驱动,非传统极化翻转机制。
Rotational Zero-Energy Mode
ΔE ≈ 0
类 Goldstone 模式:全局旋转能垒 ≈ 0。螺旋周期 ≥ 3 且与晶格四重势非公度时,能量与全局取向无关。
Electric Dzyaloshinskii–Moriya
eDMI
氧八面体集体手性扭转产生的电性类 DM 相互作用。Pb–O 与 Ti–O 双螺旋间存在约 29° 稳定非平行相位角。
Self-Moiré Crystal
⟨Δφ⟩ ≈ 29°
一维本征超晶格——非异质界面产生,而在单一均匀材料中自发涌现的长周期莫尔调制。
🛠 Skills
🐍 Python3 (ASE, Pymatgen) ⚡ VASP · DFT calculations 🧠 Deep Potential · ML force fields 📊 LAMMPS · MD simulations 🤖 AI-assisted workflows
📰 News
🏆 Dragon Boat · 龙舟
🧗 Climbing · 攀岩
第十五届全国大学生攀岩锦标赛
甲A 男子速度赛 · 浙大攀岩队全国首秀
甲A 男子速度赛 · 浙大攀岩队全国首秀
🚀 Projects
🏔 Interests
🧗 Rock climbing 🎣 Fishing 🚣 Rowing 🍺 Drinking 😴 Sleeping