1、科研项目: (1)天津市自然科学基金项目,19JCYBJC30500,1T-TaS2回滞温区内多亚稳态形成机制的研究,2019.01-2021.12,10万元,在研,主持。 (2)天津市自然科学基金面上项目,08JCZDJC18700,组分比例可调的合金纳米线在限域空间内熔化再结晶行为,2016.04-2019.03,10万元,已结题,参加。 (3)国家自然科学基金青年项目,10904108,熔化状态下一维金属纳米材料电输运特性的研究,2010.1-2012.12,23万元,已结题,参加。 (4)国家自然科学基金青年项目,10904110,高居里温度SiC稀磁半导体薄膜的制备、结构与磁性研究,2010.1-2012.12,23万元,已结题,参加。 (5)国家自然科学基金青年项目,10704054,重过掺杂Tl-2201体系准粒子输运性质的研究,2008.1-2010.12,25万元,已结题,主持。 2、论文、专著: (1) Yongchang Ma*, Dong Wu, Yajun Li, Rui Chen, Cuimin Lu, Multiple nonvolatile resistance states tuned by electric pulses in the hysteresis temperature range of 1T-TaS2, Ann. der. Phys. (Berlin) 2000507 (2021) (2) href="#!" YongchangMa*, DongWu, and ZequnWang, The evidence of stacking disorder from dielectric response along the c-axis in the commensurate CDW phase in bulk 1T-TaS2, Solid State Communications, Vol. 316–317, 113946 (2020). (3) Yongchang Ma∗, Zequn Wang, Yanhui Hou, Dong Wu, Cuimin Lu, and Cedomir Petrovic, The observation of multi meta-stable states induced by electric pulses in the hysteresis temperature range of 1T-TaS2, Phys. Rev. B, Vol. 99, 045102 (2019). (4) Yongchang Ma∗,Yanhui Hou, Cuimin Lu, Lijun Li, and Cedomir Petrovic, Possible origin of nonlinear conductivity and large dielectric constant in the commensurate charge-density-wave phase of 1T-TaS2, Phys. Rev. B, Vol. 97, 195117 (2018). (5) Ma Yongchang*, Hou Yanhui, Ma Mengmeng, Wang Xuewei, Petrovic Cedomir, The evidence of bound solitons delocalization in o-TaS3 under dc bias from sum rule, Physica B-CONDENSED MATTER, Vol. 520, 148-151 (2017). (6) Yongchang Ma*, Cuimin Lu, Xuewei Wang, Xueli Du, Lijun Li and Cedomir Petrovic, Field-induced dielectric response saturation in o-TaS3,Journal of Physics: Condensed Matter, Vol. 28, 395901(1-7) (2016). (7) MA Yong-Chang*, YAN Qian, ZHAO Jie, LU Cui-Min, The Observation of Small Polaron Tunnelling in the ab-Plane of K0.85Fe1.66Se2.0, Chin. Phys. Lett., Vol. 30, 107401 (2013). (8) Y. C. Ma*, Y. Q. Wu, J. Zhao, C. M. Lu, J. Z. Zhang, Q. S. Liu and S. L. Yan, The evolution of electromagnetic response at low frequencies with the development of superconducting condensation in Tl2Ba2CaCu2O8+d, Physica C Vol. 471, 1675-1679 (2011). (9) Y. C. Ma*, J. W. Liu, H. W. Lu and H. L. Zheng, Out-of-plane temperature dependant resistivities studies in Tl-based superconductors, Journal of Physics: Condensed Matter Vol. 19, 186203(1-7) (2007). (10) Y. C. Ma and N. L. Wang*, Infrared scattering rate of overdoped Tl2Ba2CuO8+δ, Phys. Rev. B Vol. 73, 144503(1-7) (2006). 3、其他成果(奖励、专利等): (1)马永昌,王泽群, 专利名称:利用电脉冲调控的低温可变电阻器(申请号:202010340579.1) |
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